Category Date Posted September 14, 2026 / 0 Comment 00 00 00 Welcome to your Physician Certification in Hyperbaric Medicine Paid INSTRUCTIONS: This exam consists of 160 questions. Although there may be several possible answers, you are reminded to pick the best answer. If the question has several answers you will be directed to "mark all that apply." You will have 4 hours to complete the exam. Notification of your exam results will be sent to the address you have provided. IMPORTANT: Before starting the exam close all open browsers and remove all open tabs except one. Name Email 1. Select the one item that does NOT pose a relative risk to the patient during hyperbaric therapy Deselect Answer A. glaucoma B. emphysema with CO2 retention C. history of spontaneous pneumothorax D. severe sinusitis E. chest cold with high fever None 1 out of 160 2. A 45-year-old female with a history of hypertension and cervical cancer is receiving her third hyperbaric oxygen treatment for radiation cystitis. Her treatment profile is 2.5 ATA with an airbreak scheduled after 45 minutes of oxygen. Twenty-six minutes after her air break, she develops a feeling of anxiety and palpitations and shortness of breath. The most probable explanation for this is: Deselect Answer A. confinement anxiety B. hypoglycemia C. thyroid storm D. oxygen toxicity E. pulmonary edema None 2 out of 160 3. Benzodiazepines are affected by HBO in which of the following ways? Deselect Answer A. increases potency (clinical effect) B. decreases potency (clinical effect) C. no effect D. increases half life E. decreases half life None 3 out of 160 4. Which of the following drugs may be beneficial in the treatment of cerebral artery gas embolism? Deselect Answer A. Phenobarbital B. Dexamethasone C. Lidocaine D. Dilantin E. Vitamin E None 4 out of 160 5. In the experience of the United State Air Force, when 5-minute air breaks were given every 20 minutes, what is the approximate incidence of oxygen induced seizures during HBO therapy at 2.5-3.0 ATA? Deselect Answer A. 1 in 100 exposures B. 1 in 1,000 exposures C. 1 in 10,000 exposures D. 1 in 100,000 exposures E. 1 in 1,000,000 exposures None 5 out of 160 6. Hyperbaric tenders in multiplace chambers have inherent risks associated with their jobs. Select the one statement that is incorrect. Deselect Answer A. Tenders should be well schooled in the symptoms of decompression sickness. B. Tenders should know how to contact the on call hyperbaric physician. C. Tenders should not scuba dive in the 24 hours prior to working in the hyperbaric chamber. D. Tenders should not fly in the 24 hours prior to working in the hyperbaric chamber. E. Tenders should not fly in the 24 hours following working in the hyperbaric chamber. None 6 out of 160 7. A patient has just completed their 30th hyperbaric treatment and complains of visual problems. Select the one complaint that does NOT require ophthalmologic referral. Deselect Answer A. “I am having trouble reading the newspaper in the morning.” B. “I am seeing halos around lights.” C. “I am having trouble seeing at a distance when I drive my car.” D. “I have a blind spot in my vision.” E. “I am seeing flashing lights.” None 7 out of 160 8. A periwound transcutaneous oxygen study has values that fail to reach 10mmHg at all sites while breathing air. Which one of the following statements is NOT correct? Deselect Answer A. The values are consistent with local hypoxia. B. The values indicate the need for additional arterial testing. C. The values require an oxygen challenge to determine if hyperbaric oxygen can be of value. D. The values indicate end-stage arterial disease and no further evaluation is warranted. E. The values indicate an “air leak” in the seal. None 8 out of 160 9. Stage I osteoradionecrosis by the Marx classification is traditionally managed with which of the following HBO protocols? Deselect Answer A. 20 treatments, then re-evaluate B. 20 pre-op treatments and 10 post-op treatments, then re-evaluate C. 30 treatments, then re-evaluate D. 20 pre-op treatment and 20 post-op treatments, then re-evaluate E. 60 treatments, then re-evaluate None 9 out of 160 10. Which protocol is most appropriate for the prevention of osteoradionecrosis in the setting of tooth extraction? Deselect Answer A. 20 treatments prior to extraction B. 20 treatments prior to extraction and 10 post-op treatments C. 30 treatments prior to extraction D. 20 treatment and 20 post-op treatments E. 40 treatments prior to extraction None 10 out of 160 11. Which of the following treatment pressures is appropriate for the initial management of Clostridial myonecrosis? Deselect Answer A. 1.5 ATA B. 2.0 ATA C. 2.4 ATA D. 2.5 ATA E. 3.0 ATA None 11 out of 160 12. Which of the following treatment pressures is typically used for the management of nonclostridial necrotizing fasciitis? Deselect Answer A. 1.5 ATA B. 2.0 ATA C. 2.4-2.5 ATA D. 2.8-3.0 ATA E. 3.0 ATA None 12 out of 160 13. Central nervous system oxygen toxicity correlates with: Deselect Answer A. age B. smoking C. physical @tness D. race E. none of the above None 13 out of 160 14. For an acutely compromised skin flap or skin grafts, hyperbaric oxygen treatments are commonly given: Deselect Answer A. once per day B. alternate days C. twice per day D. four times per day E. none of the above None 14 out of 160 15. With normal lungs, the amount of oxygen dissolved in plasma when breathing oxygen at 3 ATA is: Deselect Answer A. 3 ml O2 / 100ml B. 4 ml O2 / 100 ml C. 6.5 ml O2 / 100 ml D. 9.8 ml O2 / 100 ml E. 10.5 ml O2 /100ml None 15 out of 160 16. Regarding middle ear barotrauma, hemorrhage into the middle ear without tympanic membrane rupture is classified as: Deselect Answer A. Teed grade 1 B. Teed grade 2 C. Teed grade 3 D. Teed grade 4 E. Teed grade 5 None 16 out of 160 17. Which of the following is an absolute contraindication to hyperbaric treatment? Deselect Answer A. a fiberglass cast B. a glaucoma C. a metal external fixator D. doxorubicin E. an implanted automatic defibrillator F. morphine None 17 out of 160 18. A balloon filled with 10L of air at sea level is submerged to 33 fsw. Assuming temperature is constant, what is the volume of the balloon at 33 fsw? Deselect Answer A. 2.5 L B. 3.33 L C. 5 L D. 16.7 L E. 20 L None 18 out of 160 19. 19. What is the volume of the same balloon (see previous question) if it is submerged to 66 fsw? Deselect Answer A. 2.5 L B. 3.33 L C. 5.0 L D. 33.4 L E. 40 L None 19 out of 160 20. What is the name of the gas law used to solve the problem presented in the previous question? Deselect Answer A. Boyle’s Law B. Gay-Lussac’s Law C. Charles’ Law D. Dalton’s Law E. Henry’s Law None 20 out of 160 21. What is the partial pressure of oxygen for a scuba diver breathing compressed air at 99 fsw? Deselect Answer A. 479 mm Hg B. 638 mm Hg C. 2280 mm Hg D. 2401 mm Hg E. 3040 mm Hg None 21 out of 160 22. While inside an air conditioned house at 65 degrees Fahrenheit, a scuba cylinder is filled to 2985.3 psig. The cylinder is then placed on the beach where the outside of the cylinder reaches 140 degrees Fahrenheit. What is the new gauge pressure at 140 degrees Fahrenheit? (Absolute zero in degrees Rankin is -460 degrees Fahrenheit.) Deselect Answer A. 3400 psig B. 3414 psig C. 3428 psig D. 3443 psig None 22 out of 160 23. A 30 year-old-female with hypothermia and decompression sickness is brought to your hyperbaric facility. Rewarming is in progress. However, she still has a core temperature of 28 degrees Celsius. You instruct your technicians that they must be very gentle while transferring the patient to the hyperbaric chamber because rough handling of the hypothermic patient may precipitate: Deselect Answer A. seizure B. vomiting C. elevated intracranial pressure D. ventricular fibrillation E. stroke None 23 out of 160 24. A 17-year-old male drives his car into a pond and sinks 15 feet under water. Bystanders stated that he came to the surface on his own and called for help. Subsequently he needed to be helped to shore where he was found to have a right sided hemiparesis with aphasia. What is the most likely diagnosis? Deselect Answer A. near drowning B. cerebral artery gas embolism C. acute subdural hematoma D. shallow water blackout E. stroke None 24 out of 160 25. In treating acute blood loss anemia, which one of the following items is a known complication of hyperbaric therapy? Deselect Answer A. inhibition of erythropoiesis B. leukopenia C. heart failure D. thrombocytopenia E. pulmonary oxygen toxicity None 25 out of 160 26. What is the preferable site of the tympanic membrane for a myringotomy? Deselect Answer A. anterior-superior quadrant B. posterior-superior quadrant C. anterior-inferior quadrant D. center of the drum E. posterior-inferior quadrant None 26 out of 160 27. In management of carbon monoxide poisoning, hyperbaric oxygen therapy should be continued: Deselect Answer A. until carbon monoxide levels return to normal B. until there is no further improvement in cognitive function C. carbon monoxide poisoning only requires a single treatment D. for a minimum of 4 treatments E. until lactate levels return to normal None 27 out of 160 28. For a commercial diver with type 2 decompression sickness that resolves with a USN Table 6, which of the following is correct? Deselect Answer A. The diver may resume diving in one week. B. The diver may resume diving in two weeks. C. The diver may resume diving in one month. D. The diver may resume diving in two months. E. The diver may resume diving after six weeks and being cleared by a neurologist. None 28 out of 160 29. For commercial divers, what is the acceptable upper limit for oxygen partial pressure while diving? Deselect Answer A. 3.0 ATA B. 2.4 ATA C. 2.8 ATA D. 1.6 ATA E. 2.0 ATA None 29 out of 160 30. During aircraft transport of a diver with decompression illness, the flight must stay at or below what altitude? Deselect Answer A. 800 ft or lowest safe altitude B. 1500 ft or lowest safe altitude C. 2000 ft or lowest safe altitude D. 2500 ft or lowest safe altitude E. 3000 ft or lowest safe altitude None 30 out of 160 31. Dysbaric osteonecrosis is least likely to be seen in which of the following? Deselect Answer A. divers who have always stayed within the safety of accepted dive tables B. first time divers C. saturation divers D. divers who stay in the “no-stop” range on dive tables E. divers who have never dived deeper than 38 feet None 31 out of 160 32. An insulin dependent diabetic male with necrotizing fasciitis is receiving his 4th HBO treatment. His temperature is 102 degrees and blood specimen taken 30 minutes before treatment reveals a WBC of 16,000, a hemoglobin of 9.6 gm, Na 141 mEq, K 2.8 mEq, Cl 105 mEq, HCO3 19 mEq, glucose 76, BUN 28, Creat 2.0. His treatment pressure is 2.5 ATA with two 5 minute air breaks scheduled at 30 and 60 minutes of treatment. Four minutes into his second air-break he complains of weakness, palpitations, and nausea and is incoherent. The most likely diagnosis for his symptoms is: Deselect Answer A. oxygen toxicity B. hypokalemic SVT C. hypoglycemia D. cardiac decompensation E. early diabetic ketoacidosis None 32 out of 160 33. Which of the following is NOT a pathological effect of bubbles during decompression illness? Deselect Answer A. mechanical disruption of endothelium, cochlear, and nervous tissue B. activation of leukocytes, endothelial cells, and platelets C. renal failure D. elevation of CPK levels E. activation of coagulation, fibrinolysis, and complement systems None 33 out of 160 34. Which one of the following statements is TRUE when comparing helium to nitrogen? Deselect Answer A. Nitrogen diffuses into tissue more readily than helium. B. Nitrogen has higher tissue solubility than helium. C. Nitrogen has a lower atomic weight than helium. D. Nitrogen is less narcotic than helium. E. None of the above None 34 out of 160 35. Therapy with which of the following medications is a contraindication to hyperbaric oxygen therapy? Deselect Answer A. Phenobarbital B. Vincristine C. Coxib-2 drugs D. Bleomycin E. Fentanyl None 35 out of 160 36. For a diver, using a mixture of 32% oxygen / 68% nitrogen, which one of the following statements is correct? Deselect Answer A. increases dive safety but decreases bottom time B. permits divers to go deeper C. increases bottom time for a given depth D. increases the risk of nitrogen narcosis E. decreases the risk of oxygen seizures None 36 out of 160 37. For patients with Clostridium perfringens infections (gas gangrene), the principal therapeutic benefit of hyperbaric oxygen in the setting of Clostridium perfringens is: Deselect Answer A. direct bacterial killing by oxygen toxicity B. inhibits production of clostridial alpha-toxin C. activates complement D. eliminates the need for surgery E. enhances cell-mediated immunity None 37 out of 160 38. A 45-year-old male experiences an oxygen-induced seizure while during hyperbaric oxygen treatment for a delayed radiation injury using a monoplace chamber at 2.5 ATA. Which of the following steps is the most desirable? Deselect Answer A. discontinue HBO therapy and refer for alternative therapies B. pre-treat with oral diazepam and/or decrease treatment pressure and/or provide air breaks C. shorten the duration of treatment from 90 minutes to 60 minutes and monitor the cardiac rhythm during treatment D. treat with Versed and Anectine E. decrease percentage of oxygen in chamber during treatment None 38 out of 160 39. A 65-year-old male is receiving his first HBO treatment for a diabetic foot ulcer. Shortly after the treatment begins, he complains of bilateral ear pain. He states the pain is getting progressively worse and is unrelieved by Valsalva or Frenzel maneuvers. Which of the following is the appropriate next step? Deselect Answer A. continue the treatment and encourage patient to continue attempting a Valsalva maneuver B. decrease chamber pressure by 2-3 psig and reattempt Valsalva or Frenzel maneuvers C. administer analgesics for pain D. decompress and refer patient to a wound healing program for alternative management E. perform a myringotomy None 39 out of 160 40. A diver who has complete resolution of neurological decompression illness (type 2) after recompression should not fly for at least: Deselect Answer A. 12 hours B. 24 hours C. 5 days D. 2 weeks E. 3 weeks None 40 out of 160 41. A 52-year-old female is undergoing her fifth treatment for mandibular osteoradionecrosis. During her descent, she complains of sudden onset of vertigo, tinnitus, and deafness in her right ear while she was attempting a forceful Valsalva. What is the most likely diagnosis? Deselect Answer A. acute cerebrovascular accident (CVA) B. benign positional vertigo (BPV) C. round window rupture D. alternobaric vertigo E. tympanic membrane rupture None 41 out of 160 42. Which of the following is true regarding inside attendants of a multiplace HBO chamber? Deselect Answer A. Inside attendants must be limited to four hour shifts. B. Inside attendants are at a higher risk of acquiring pneumonia and asthma. C. Inside attendants must not engage in SCUBA diving 24 hours prior to working nor fly in an airplane 24 hours after working in an HBO chamber. D. Inside attendants are not at risk of acquiring decompression sickness. E. Inside attendants are at risk for oxygen toxicity. None 42 out of 160 43. Which of the following disorders place a patient at risk for respiratory depression during hyperbaric oxygen therapy? Deselect Answer A. insulin-dependent diabetes mellitus B. congestive heart failure C. lung cancer D. chronic obstructive pulmonary disease E. high dose steroids None 43 out of 160 44. A key component to HBO-assisted angiogenesis in problem wounds is: Deselect Answer A. creation of steep oxygen gradients with hyperoxic perimeter and hypoxic center of wound B. stimulation of growth factors C. topical oxygen stimulating @broblasts D. enhancement of collagen and matrix proteins E. all of the above None 44 out of 160 45. Select the statement that is NOT correct regarding delayed radiation injury. Deselect Answer A. Delayed radiation complications are typically seen after a latent period of six months. B. The hallmark of delayed radiation injury is endarteritis with tissue hypoxia and secondary fibrosis. C. Evolution of fibrotic tissue begins gradually after irradiation. D. Radiation injury may become clinically manifest 5 years after therapy. E. Patients with an active cancer will experience tumor growth with HBO. None 45 out of 160 46. A 53-year-old male complains of dyspnea while undergoing HBO therapy for delayed radiation injury. On exam following the treatment you note that the patient has dependent rales on lung exam. A chest radiograph reveals pulmonary vascular congestion. Symptoms re-solve post-treatment. He has no prior cardiac history. All of the following steps may be taken to prevent recurrence of symptoms during therapy EXCEPT: Deselect Answer A. decrease the pressure of oxygen B. institute frequent air breaks C. pretreat with diazepam orally D. decrease time of treatments from 90 minutes to 60 minutes E. elevate the head of the stretcher None 46 out of 160 47. The maximum depth at which 100% oxygen can be administered is: Deselect Answer A. 33 fsw (2.0 ATA) B. 50 fsw (2.5 ATA) C. 60 fsw (2.8 ATA) D. 66 fsw (3.0 ATA) E. 99 fsw (4.0 ATA) None 47 out of 160 48. A 64-year-old male is requesting a dive physical. All of the following are correct statements to tell him EXCEPT one. Select the incorrect statement. Deselect Answer A. Cardiac performance declines with age. B. Pulmonary performance declines with age. C. Bubble formation decreases with age. D. Thyroid function decreases with age. E. Risk of decompression sickness increases with age. None 48 out of 160 49. A vascular surgeon refers a 67-year-old diabetic male to HBO for assistance with a nonhealing lower extremity wound. The patient is not a candidate for revascularization, is a nonsmoker, and has failed conservative wound management. Periwound oximetry reveals a pO2 of 25 mmHg on room air. The patient then has an oxygen challenge at one ATA where he is placed on 100% O2 via a tight-fitting demand mask and reassessed. A good response to HBO can be predicted if the patient’s periwound oximetry readings increase above which of the following values? Deselect Answer A. 50 mm Hg B. 75 mm Hg C. 100 mm Hg D. 150 mm Hg E. 200 mm Hg None 49 out of 160 50. While breathing oxygen at 3ATA, the arterial pO2 can be raised to: Deselect Answer A. 600 mmHg B. 800 mm Hg C. 1200 mm Hg D. 1800 mm Hg E. 2100 mm Hg None 50 out of 160 51. Which one of the following does NOT increase the risk of central nervous system oxygen toxicity? Deselect Answer A. high fevers B. patients who are apprehensive C. valium or phenobarbital D. receiving steroids E. history of epilepsy None 51 out of 160 52. A 56-year-old male develops dyspnea while undergoing decompression following his tenth treatment at 2.5 ATA for osteoradionecrosis. His symptoms continue to worsen as he ascends. He is slightly cyanotic with jugular venous distention and right side chest pain prior to the chamber fully decompressing. The most likely diagnosis is: Deselect Answer A. congestive heart failure B. cardiac tamponade C. acute asthma exacerbation D. pneumothorax E. oxygen toxicity None 52 out of 160 53. Ninety-five percent of all cases of decompression sickness occur within: Deselect Answer A. 6 hours of diving B. 24 hours of diving C. 36 hours of diving D. 48 hours of diving E. 72 hours of diving None 53 out of 160 54. A diver experiences vertigo following a dive to 35 feet of seawater for approximately 15 minutes. There was no emergent ascent. He states that he had trouble equalizing his ear pressure during the dive. He has peripheral nystagmus and mild tinnitus, but has no focal neurologic signs and no musculoskeletal joint pain. The most likely diagnosis is: Deselect Answer A. alternobaric vertigo B. inner ear barotrauma C. decompression sickness D. cerebral arterial gas embolism E. probable viral labyrinthitis None 54 out of 160 55. Which of the following solvents may produce carbon monoxide poisoning? Deselect Answer A. carbon tetrachloride B. trichloroethylene C. methylene chloride D. trichloroethane E. methylene tetrachloride None 55 out of 160 56. How long does it take for pulmonary toxicity to become manifest at 2 ATA breathing 100% oxygen continuously? Deselect Answer A. 90 minutes B. 2 hours C. 6 hours D. 24 hours E. 48 hours None 56 out of 160 57. Lower extremity periwound transcutaneous oxygen values that exceed 50 mm Hg in diabetics under air breathing conditions at one atmosphere: Deselect Answer A. indicate marked local hypoxia B. require further arterial diagnostic testing C. are within normal limits D. suggest leakage of atmospheric air E. suggest that contact Quid has been substituted for electrolyte when the membrane was changed None 57 out of 160 58. Periwound transcutaneous oxygen values that exceed 300 mm Hg with 100% oxygen inhalation at 1.0 ATA: Deselect Answer A. suggest normal regional arterial inQow B. are consistent with regional occlusive disease C. require further arterial diagnostic testing D. suggest leakage of atmospheric air E. suggest that the electrode membrane needs to be changed None 58 out of 160 59. The use of Phenobarbital or Valium at 3.0 ATA, breathing 100% oxygen: Deselect Answer A. will not suppress oxygen seizures B. will increase the risk for oxygen seizures C. will decrease the risk for oxygen seizures D. are contra-indicated in hyperbaric patients E. can predispose to malignant hyperthermia None 59 out of 160 60. Which one of the following items is NOT associated with oxygen toxicity? Deselect Answer A. nausea and vomiting B. tunnel vision C. jaundice D. tinnitus E. decreased hearing None 60 out of 160 61. A 68-year-old diabetic male with osteomyelitis of the lumbar spine is receiving IV Gentamicin and Nafcillin. He has completed 30 HBO sessions and reports that his fingers have been getting numb over the past 4 days. The most appropriate response is: Deselect Answer A. stop HBO, this is a uremic neuropathy resulting from the interaction HBO with gentamicin B. request an immediate MRI to rule out cord compression C. this is probably a drug reaction and has nothing to do with HBO D. this is an HBO side effect and will disappear after HBO is stopped E. request nerve conduction studies to rule out diabetic neuropathy None 61 out of 160 62. All the following maneuvers may help equalize middle ear pressure during compression EXCEPT: Deselect Answer A. yawning B. tugging the external ear C. swallowing D. blowing your nose E. chewing gum None 62 out of 160 63. Medicare (CMS) insurance will pay for HBO treatment of osteomyelitis with HBO if: Deselect Answer A. the bacteria is methicillin resistant Staphylococcus aureus (MRSA) B. the patient is a compromised host C. the patient has failed one course of appropriate antibiotics and at least one debridement D. the patient has failed two courses of appropriate antibiotics and at least one debridement E. the patient has failed to respond to 4 weeks of antibiotic therapy None 63 out of 160 64. Which one of the following items is a significant pre-treatment risk factor for hyperbaric oxygen therapy? Deselect Answer A. blood sugar 80 mg % B. history of Adriamycin therapy 12 months ago C. history of cis-platinum therapy 12 months ago D. history of radiation therapy 12 days ago E. history of retinal surgery 12 months ago None 64 out of 160 65. Hyperbaric ventilators used in monoplace chambers are: Deselect Answer A. pressure cycled B. volume cycled C. patient cycled D. volume and pressure cycled E. none of the above None 65 out of 160 66. Boyle's Law applies to: Deselect Answer A. gas solubility B. pressure, volume and temperature C. volume and pressure D. volume and temperature E. oxygen and nitrogen partial pressures None 66 out of 160 67. Dalton's Law states that the partial pressure of a gas is proportional to: Deselect Answer A. the percentage of the gas in the mixture B. the absolute temperature of the gas C. the molecular weight of the gas in Dalton's D. the absolute pressure plus the gas pressure E. the solubility of the gas None 67 out of 160 68. For a diabetic to qualify for hyperbaric treatment, the T-CpO2 must rise to over mmHg when the patient is breathing 100% oxygen at 2.5 ATA via tight fitting mask in the chamber. Deselect Answer A. 50 B. 100 C. 200 D. 800 E. 1200 None 68 out of 160 69. After completing a 90 minute, 2.5 ATA treatment, the arterial pO2 will return to the pretreatment level: Deselect Answer A. in approximately 5 minutes B. in approximately 60 minutes C. in approximately 4 hours D. in approximately 8 hours E. in approximately 12 hours None 69 out of 160 70. Henry's Law states that the partial pressure of oxygen in solution is: Deselect Answer A. the reciprocal of the nitrogen pressure B. equal to the partial pressure of oxygen in the gas above the liquid C. the partial pressure of oxygen times 2 D. proportional to the percentage of the oxygen E. NONE OF THE ABOVE None 70 out of 160 71. Two Atmospheres Absolute (2.0 ATA) is equivalent to: Deselect Answer A. 10 feet (3 m) of sea water B. 14.7 psi gauge pressure in the chamber C. 45 feet of sea water D. 29.4 psi gauge pressure in the chamber E. 20 m (66 ft) of sea water None 71 out of 160 72. The most common cause of trauma-induced osteoradionecrosis of the mandible is: Deselect Answer A. tooth extraction B. trauma from poorly @tting prostheses C. stress fracture D. presence of bony spurs on the alveolar ridge E. dry socket None 72 out of 160 73. "Normoxic Breathing Mix” refers to a gas mix which always: Deselect Answer A. contains 21% oxygen B. produces a partial pressure of oxygen of 0.21 ATA regardless of the pressure C. registers 100% when measured on an oxygen analyzer within a chamber at depth D. contains 0.42 ATA of oxygen when chamber is at 2.0 ATA of pressure E. is 21% oxygen + 79% nitrogen None 73 out of 160 74. The anesthetic potency of an inert gas is proportional to its oil-water solubility ratio. This relationship is referred to as the: Deselect Answer A. Haldane hypothesis B. Behnke-Shilling hypothesis C. Meyer-Overton hypothesis D. Bennett-Elliott hypothesis E. Swag Value None 74 out of 160 75. Tissue levels of carbon monoxide can be determined: Deselect Answer A. by mathematical extrapolation of the carboxyhemoglobin levels B. on the basis of the carboxyhemoglobin levels C. by aspirating a small amount of interstitial Quid and testing it for carbon monoxide D. by use of the co-oximeter E. none of the above None 75 out of 160 76. The approximate half-life for CO elimination from blood at normobaric pressure on 100% oxygen is: Deselect Answer A. 23 minutes B. 80 minutes C. 3 hours D. 4 hours and 10 minutes E. 5 hours and 20 minutes None 76 out of 160 77. 165 fsw is equivalent to pounds per square inch absolute (psia). Deselect Answer A. 88 B. 120 C. 140 D. 160 E. 175 None 77 out of 160 78. A diver at 200 fsw, breathing air, is exposed to an oxygen partial pressure of: Deselect Answer A. 14.8 ATA B. 1.48 ATA C. 1.80 ATA D. 1.84 ATA E. 1.98 ATA None 78 out of 160 79. A balloon is inflated to 4 liters volume at 100 fsw. What would be the resulting volume if the sealed balloon is decompressed to 50 fsw? Deselect Answer A. 4.6 liters B. 5.7 liters C. 6.4 liters D. 7.5 liters E. 8.2 liters None 79 out of 160 80. The partial pressure of a gas in solution equals the partial pressure of that gas exerted on the surface of that liquid, at equilibrium. This is the definition of which gas law? Deselect Answer A. Boyle’s Law B. Dalton’s Law C. Henry’s Law D. Charles’s Law E. Gay-Lussac’s Law None 80 out of 160 81. At sea level pressure, the transcutaneous oxygen monitor should be calibrated to how many mm Hg? Deselect Answer A. 120 B. 134 C. 159 D. 600 E. 760 None 81 out of 160 82. Carbon monoxide poisoning can mimic all of the following EXCEPT: Deselect Answer A. psychosis B. gastroenteritis C. influenza D. hepatitis E. cephalgia None 82 out of 160 83. What is the correct color coding for a heliox gas cylinder? Deselect Answer A. brown B. brown and blue C. green and brown D. yellow E. yellow and green None 83 out of 160 84. Many factors are associated with increased morbidity from carbon monoxide poisoning. Which one of the following has NO known increased risk? Deselect Answer A. syncope B. pregnancy C. coronary artery disease D. renal insuiciency E. age None 84 out of 160 85. Periwound tissue oximetry values that exceed 50 mmHg under ambient (21% O2) conditions: Deselect Answer A. are consistent with regional ischemia B. require further vascular diagnostic testing C. are considered within normal limits D. complicate the wound healing process E. indicate malfunctioning of the T-CpO2 meter None 85 out of 160 86. Which of the following items is NOT required for angiogenesis? Deselect Answer A. acidosis B. hypoxic gradient C. hyperproteinemia D. hyperlactatemia E. low wound pH None 86 out of 160 87. Oxygen plays a role in many aspects of wound healing. All of the following processes are oxygen-dependent EXCEPT: Deselect Answer A. deposition of collagen B. cross-linking of collagen C. breakdown of the @brin plug (@brinolysis) D. angiogenesis E. production of growth factors None 87 out of 160 88. All of the following are relative contraindications to hyperbaric oxygen treatments EXCEPT: Deselect Answer A.congestive heart failure B. chronic obstructive pulmonary disease C. uncontrolled high fever D. negative pressure wound therapy E. implanted pacemaker None 88 out of 160 89. Periwound oximetry values that range from 100-200 mmHg during hyperoxic challenge at 1.0 ATA suggest: Deselect Answer A. the existence of arterial occlusive disease B. HBO therapy will be of no bene@t C. normal values would occur while breathing room air D. vasoconstriction is intact E. the patient is a candidate for HBOTx if his values breathing air are more than 40 mmHg None 89 out of 160 90. The half-life for elimination of CO in the blood at 3.0 ATA breathing 100% oxygen is: Deselect Answer A. 15 minutes B. 23 minutes C. 45 minutes D. 80 minutes E. 90 minutes None 90 out of 160 91. An appropriate family history for an HBO consult should include the presence or absence of: Deselect Answer A. hereditary spherocytosis B. Tay Sachs disease C. sickle cell disease D. sickle cell disease E. cancer None 91 out of 160 92. U.S. Navy Treatment Table 6 is indicated: Deselect Answer A. where onset of joint pain occurs during decompression (ascent to surface) B. with presentation of paresthesia C. when a pre-treatment neurological assessment detects the presence of a Babinski D. when pain in multiple joints occurs E. all of the above None 92 out of 160 93. Air embolism can result from all of the following conditions EXCEPT: Deselect Answer A. breath hold diving from the surface B. breathing from an inverted, air-@lled car submerged 20 feet in a lake and then surfacing C. oral insujation of air into the vagina during pregnancy D. leaving a submerged vehicle that has gone through the ice E. cardiopulmonary by-pass surgery None 93 out of 160 94. Which one of the following statements is true regarding the use of Valium™ during HBO therapy? Deselect Answer A. It is effective for seizure prophylaxis. B. Less than normal doses may be required for sedation. C. It may increase the risk of CNS oxygen toxicity. D. It is less effective than Vitamin E. E. It is less effective than Dilantin™. None 94 out of 160 95. Late effects of therapeutic radiation include all of the following EXCEPT: Deselect Answer A. progressive @brosis B. obliterative endarteritis C. decreased vascular density D. chronic inflammatory state E. tissue hypoxia None 95 out of 160 96. The incidence of late radiation tissue injury increases with all of the following EXCEPT: Deselect Answer A. radiation doses of 50 Gray (5,000 rads) or greater B. increasing time intervals from completion of radiotherapy C, surgical procedures within previously irradiated @elds D. cumulative radiation doses from imaging E. concomitant use of tissue radio sensitizing agents None 96 out of 160 97. A Stage III Marx Protocol is defined as: Deselect Answer A. failed Stage II B. presence of @stula C. mandibular fracture D. all of the above E. none of the above None 97 out of 160 98. A 54-year-old male has undergone a rectus abdominis free flap to reconstruct an anterior leg defect with exposed tibia. Intraoperative flap ischemia time was 1.5 hours. At the time of revascularization there was excellent blood flow. However, in the recovery room there was almost no blood flow as evidenced by visual inspection and Doppler examination. Your recommendation to the surgeon should be: Deselect Answer A. immediate transportation to the HBO chamber for therapy B. application of leeches to improve venous outflow C. re-exploration of the vascular anastomoses followed by HBO D. TCOM evaluation of the flap E. wait until patient has recovered from anesthesia before placing him in the chamber None 98 out of 160 99. A Teed 5 tympanic membrane complication is defined as: Deselect Answer A. retraction B. hemorrhage C. infection D. perforation E. none of the above None 99 out of 160 100. Which of the following is the least likely cause of arterial gas embolism? Deselect Answer A. insufflation of air into the vagina during pregnancy B. head and neck surgery C. SCUBA diving at 30 feet D. SCUBA diving at 60 feet E. leaving a submerged vehicle at 30 feet and breath holding to the surface None 100 out of 160 101. The management of diving-induced cerebral arterial gas embolism should include evaluation for: Deselect Answer A. pneumothorax B. decompression sickness C. patent foramen ovale D. pulmonary gas trapping E. all of the above None 101 out of 160 102. In Clostridium perfringens infections, which of the following is the most important mechanism of action for HBO? Deselect Answer A. enhanced host neutrophil function B. inhibition of Clostridial spore formation C. inhibition of Clostridial toxin formation D. neutralization of Clostridial toxin E. sterilization of the arterial blood with HBO at a paO2 of 1800 mmHg None 102 out of 160 103. Clostridium perfringens is a: Deselect Answer A. gram negative rod B. gram positive rod C. gram negative coccus D. gram positive coccus E. none of the above None 103 out of 160 104. Which of the following are considered risk factors for paradoxical air embolism (right to left shunt)? Deselect Answer A. patent foramen ovale B. increased pulmonary artery pressures C. transpulmonary @ltration defects D. oral insufflation of air into the vagina during pregnancy E. all of the above None 104 out of 160 105. The differences in the differential diagnosis of cerebral arterial gas embolism versus decompression sickness may be : Deselect Answer A. cerebral involvement B. time of onset C. depth of dive D. the distribution of paralysis if present E. all of the above None 105 out of 160 106. When computing a repetitive dive, the surface interval is defined as the period: Deselect Answer A. from the start of the @rst dive until the start of the second dive B. the end of the @rst dive until the start of the second dive C. from beginning of ascent for the @rst dive until the start of the second dive D. from the end of the @rst dive until reaching the bottom of the second dive E. lasting longer than 12 hours None 106 out of 160 107. Cotton clothing and sheets were traditionally selected for hyperbaric chambers because they: Deselect Answer A. are less expensive than synthetics B. are less likely to accumulate static electricity C. burn at a slower rate than synthetic materials D. reduce the potential for bacterial cross-contamination E. are more easily located when ordering supplies None 107 out of 160 108. Wound irrigation pressures that are associated with tissue destruction and edema begin at: Deselect Answer A. 5 pounds per square inch B. 15 pounds per square inch C. 30 pounds per square inch D. 50 pounds per square inch E. 100 pounds per square inch None 108 out of 160 109. Which one of the following scenarios would be classed as a contraindication to HBO? Deselect Answer A. internal pacemaker B. automatic implantable cardiac defibrillator C. lens implant D. implantable nerve stimulator E. none of the above None 109 out of 160 110. The codes and guidelines that guide the appropriate installation of hyperbaric medicine chambers are published by the: Deselect Answer A. Joint Commission for Accreditation of Hospitals (JCAHO) B. American Medical Association (AMA) C. National Fire Prevention Association (NFPA) D. Undersea and Hyperbaric Medical Society (UHMS) E. American College of Hyperbaric Medicine (ACHM) None 110 out of 160 111. Endotracheal tube cuffs in the monoplace chamber: Deselect Answer A. must be filled with water or saline to provide an adequate seal B. should be over inflated with air by 50% before treatment at 2.0 ATA C. deflate somewhat after treatment D. do not pose problems at pressures below 2.5 ATA E. must be foam filled None 111 out of 160 112. At 2.0 ATA, using 100% oxygen, the maximum treatment duration for continuous exposure to oxygen should not usually exceed: Deselect Answer A. 90 minutes B. 120 minutes C. 180 minutes D. 220 minutes E. 240 minutes None 112 out of 160 113. A 54-year-old diabetic male is referred to you for an ulcer on the metatarsal head of 7 months duration which has proved refractory to antibiotics and local debridement. Before accepting this patient for hyperbaric treatment, evaluation of which one of the fol-lowing factors is NOT needed? Deselect Answer A. blood sugar control and insulin requirements B. offloading the ulcer C. transcutaneous measurements adjacent to the ulcer D. blood urea nitrogen and creatinine E. serum prealbumin levels None 113 out of 160 114. The eardrum can be anesthetized by the topical application of: Deselect Answer A. Pontocaine B. Lidocaine C. Nupercaine D. Ravocaine E. Phenol None 114 out of 160 115. Following 15 hyperbaric treatments, red cell flexibility is: Deselect Answer A. decreased by 100% B. decreased by 10% C. unchanged D. increased by 10% E. increased by 100% None 115 out of 160 116. Which of the following is (are) true regarding osteoradionecrosis? Deselect Answer A. may be treated with antibiotics if detected early B. is caused by radiation induced avascular necrosis C. is hypervascular, hypercellular, and hypoxic D. is hypovascular, hypercellular, and hypoxic E. need surgery before HBO None 116 out of 160 117. A patient with gas gangrene of the abdominal wall is referred to your unit for hyperbaric treatment. Regardless of prior or subsequent treatment, if the patient was diagnosed more than 24 hours prior to hyperbaric treatment, you can state that the statistical odds for this patient dying are about: Deselect Answer A. 1-5% B. 5-10% C. 50-75% D. 100% E. All Survive None 117 out of 160 118. A 41-year-old male with Buerger’s disease is referred for hyperbaric oxygen therapy. Room air transcutaneous oxygen measurements over the foot average 10-15 mmHg. An inchamber (monoplace) challenge at 2.0 ATA exhibited a rapid rise to 1520 mmHg (5 min) which was noted immediately after reaching pressure. While at pressure, there was no fluctuation except for a decline, which commenced with the start of depressurization. Which of the following interpretations is most accurate? Deselect Answer A. significant wound hypoxia with positive response to HBO B. significant wound hypoxia, technical problems present during the HBO study C. obtain vascular medicine consult D. patient does not require HBO E. patient is a candidate for surgical revascularization None 118 out of 160 119. All of the following reasons support the use of HBO in gas gangrene EXCEPT: Deselect Answer A. HBO is bacteriostatic for anaerobes B. HBO inhibits production of alpha toxin C. HBO reduces blood pressure D. HBO promotes demarcation between live and dead tissue E. HBO may decrease the number of surgical procedures necessary None 119 out of 160 120. With radiation therapy of the head and neck, the threshold dose for occurrence of osteoradionecrosis is usually: Deselect Answer A. 1500 cGy B. 3000 cGy C. 5000 cGy D. 7000 cGy E. 8500 cGy None 120 out of 160 121. Which of the following is NOT permissible in a multiplace chamber? Deselect Answer A. nylon stockings B. cotton gown C. Egyptian cotton D. Duret gold 80 E. all of the above None 121 out of 160 122. A 50-year-old diabetic with a previous below the knee amputation of the right leg is referred for evaluation. He has been diagnosed with dry gangrene of the forefoot and has NO prior vascular workup. Interpret the following transcutaneous oxygen study per-formed over the left leg to determine a level of amputation and select the best recommendation. This study is performed using four Clarke electrodes calibrated to 45 degrees centigrade. Position 1: Distal thigh, lateral placement / Room air value is 50 mm Hg10 minute oxygen challenge value is 140 mm HgPosition 2: Distal thigh, medial placement / Room air value is 43 mm Hg10 minute oxygen challenge value is 120 mm HgPosition 3: Proximal calf, lateral placement / Room air value is 15 mm Hg10 minute oxygen challenge value is 100 mm HgPosition 4: Proximal calf, medial placement / Room air value is 40 mm Hg10 minute oxygen challenge value is 112 mm HgPosition 5: Proximal ankle, lateral placement / Room air value is 8 mm Hg10 minute oxygen challenge value is 45 mm HgPosition 6: Proximal ankle, medial placement / Room air value is 34 mm Hg10 minute oxygen challenge value is 96 mm HgDeselect Answer A. recommend above the knee amputation; expect delayed healing B. recommend below the knee amputation; expect no delays in healing C. recommend below the knee amputation; expect delays in healing D. recommend below the knee amputation followed by postop HBO support of the flap E. recommend angiogram None 122 out of 160 123. Which of the following is commonly seen clinically in severe carbon monoxide poisoning? Deselect Answer A. cherry red lips B. low blood sugar C. low arterial pH D. high serum potassium E. metabolic alkalosis None 123 out of 160 124. According to the U.S. Navy Standard air decompression tables, the theoretical time required to reach tissue nitrogen equilibrium following a dive is: Deselect Answer A. 15 minutes B. 1 hour C. 12 hours D. 24 hours E. 48 hours None 124 out of 160 125. The bottom time is defined as: Deselect Answer A. total time elapsed when a diver leaves the surface to the time that they begin their ascent B. total time elapsed when a diver reaches the bottom to the time that they begin their ascent C. total time required to reach a speci@c depth D. total time elapsed when a diver reaches the bottom to the time that they reach the surface E. none of the above None 125 out of 160 126. All of the following are considered confounding systemic factors for transcutaneous oxygen measurements EXCEPT: Deselect Answer A. smoking B. boney prominence C. pigmented skin D. scar tissue . study performed 6 hours after dialysis None 126 out of 160 127. Three percent oxygen in the breathing gas at 198 fsw (60 m) equals an oxygen pressure of: Deselect Answer A. 23 mmHg B. 160 mmHg C. 250 mmHg D. 600 mmHg E. 1200 mmHg None 127 out of 160 128. The cardinal feature of Clostridial myonecrosis is: Deselect Answer A. presence of gram negative rods B. pain which is out of proportion to the clinical appearance C. temperature of 103 F with rigors D. presence of demonstrable gas in the tissues E. skin necrosis None 128 out of 160 129. Increasing the relative humidity in the environment can: Deselect Answer A. reduce the chamber temperature B. decrease the development of pulmonary oxygen toxicity C. reduce static charge development D. affects adiabatic cooling E. increases static charge development in the multiplace chamber None 129 out of 160 130. Fires in chambers occur most commonly: Deselect Answer A. when oxygen is introduced into the system the @rst time B. when they have been in use for a long period with variable maintenance C. through human error D. when the original surface of plastics degrades and the oxygen index increases E. none of the above None 130 out of 160 131. Hyperbaric oxygen treatment of pregnant women has been associated with: Deselect Answer A. retrolental fibroplasias B. no discernible pathologic change in the fetus C. premature closure of the patent ductus D. Sheehan’s syndrome E. an increased number of birth defects None 131 out of 160 132. A diver with subcutaneous air and no neurologic signs: Deselect Answer A. should be presumptively treated with HBO for occult cerebral arterial gas embolism B. should be presumptively treated with HBO for occult decompression sickness C. should receive a chest x-ray D. should be placed on aspirin E. should initially be placed in a head down position for 5 minutes None 132 out of 160 133. Burn patients should be treated in the hyperbaric chamber: Deselect Answer A. only after grafting has been done B. as soon as tangential excision has been completed C. as soon as possible (within the @rst 24 hours) D. only with associated carbon monoxide poisoning E. as soon as Sulfamylon has been applied None 133 out of 160 134. A patient with radionecrosis of the bladder has completed 40 HBO treatments at 2.0 ATA without any significant change in hematuria. Which of the following would NOT be a reasonable management strategy? Deselect Answer A. rule out bleeding disorder B. rule out tumor recurrence C. continue HBOTx to 60 treatments after clinical reevaluation D. cystoscopy to determine if there are identi@able bleeders that can be cauterized E. continue HBOTx to 60 treatments with increased pressure to 2.5 ATA None 134 out of 160 135. Hypotension in burn patients is most likely to occur: Deselect Answer A. during compression B. while at pressure during treatment C. during or immediately following decompression D. one to two hours following HBOT E. is not influenced by treatment None 135 out of 160 136. The Semmes-Weinstein test is used for: Deselect Answer A. hearing evaluation B. visual acuity testing C. neuropathy assessment D. nutritional assessment E. sickle cell disease detection None 136 out of 160 137. Which of the following tests is useful in predicting the potential for wound healing? Deselect Answer A. complete blood count B. hemoglobin C. prealbumin D. magnesium E. serologic test for syphilis None 137 out of 160 138. Which of the following is an early marker for positive nitrogen balance? Deselect Answer A. albumin B. prealbumin C. CBC D. urine protein None 138 out of 160 139. In osteoradionecrosis, the irradiated tissue pO2 usually increases to what percent of normal after 20 to 30 HBO treatments? Deselect Answer A. 10% B. 25% C. 50% D. 80% E. 100% None 139 out of 160 140. Which of the following is associated with occult cancer? Deselect Answer A. Clostridium welchii B. Clostridium septicum C. Clostridium novyi D. Clostridium oedematiens None 140 out of 160 141. The typical clinical symptomatology for patients with clostridial myonecrosis can include all of the following EXCEPT: Deselect Answer A. pain out of proportion to the physical @ndings B. tachycardia out of proportion to the fever C. delirium and disorientation D. hemorrhagic Bullae E. extensive skin necrosis None 141 out of 160 142. You have been asked to manage a dive accident involving a 25-year-old suffering from decompression sickness and exposure. He is obtunded and hypothermic (core temp 30°C). Which of the following cardiac arrhythmias is most likely to be seen during transport? Deselect Answer A. atrial flutter B. atrial fibrillation C. 1° heart block D. 2° heart block E. ventricular fibrillation None 142 out of 160 143. A patient with a history of brain injury has a seizure during a treatment in a multiplace chamber. Which of the following should be done first? Deselect Answer A. give IV Ativan B. place an oral airway C. restrain the patient so he doesn't hurt himself D. remove the oxygen hood E. begin decompression None 143 out of 160 144. For a patient having a seizure in an oxygen-filled monoplace chamber, the best course of action is to: Deselect Answer A. proceed with emergency decompression B. switch in the in-flow valve from oxygen to air C. initiate decompression chamber when the patient resumes breathing D. wait to see what will happen and decompress the patient during the tonic phase E. wait until the seizure goes into a clonic phase and then begin standard decompres-sion None 144 out of 160 145. An ulcer which reaches tendon or bone and has associated osteomyelitis is described as a: Deselect Answer A. Wagner grade 2 B. Wagner grade 3 C. Wagner grade 4 D. Wagner grade 4B E. Wagner grade 5 None 145 out of 160 146. An appropriate treatment regimen for the HBO treatment of a burn patient is: Deselect Answer A. 2 .0ATA for 90 minutes TID for the @rst day and then BID B. 2.4 ATA for 90 minutes BID C. 2.0 ATA for 90 minutes QID for the @rst two days, then BID D. 3.0 ATA for 60 minutes QD E. 3.0 ATA for 90 minutes BID None 146 out of 160 147. Delayed neurologic sequelae can manifest after carbon monoxide poisoning. Which of the following can present as delayed sequelae? Deselect Answer A. gait disturbances B. personality disorder C. hearing impairment D. dementia E. all of the above None 147 out of 160 148. A 40-year-old male with diabetes, heart disease, and seizure disorder is being treated for a non-healing foot ulcer. His medications include insulin, digoxin, enalapril, aspirin, and Dilantin. Sixty minutes into his fifth treatment at 2.4 ATA, he becomes weak and diaphoretic. The most probable explanation is: Deselect Answer A. myocardial infarction B. hypoglycemia C. digoxin toxicity D. Dilantin toxicity E. enalapril toxicity None 148 out of 160 149. A severely obtunded male patient is treated in the hyperbaric chamber for carbon monoxide poisoning. At the end of treatment the CO level is less than 2% but he remains unconscious. He should be: Deselect Answer A. taken to the ICU and given supportive therapy; further HBO is not indicated B. retreated in 6-8 hours C. retreated in 12-18 hours D. retreated in 24 hours E. left on 100% for 24 hours None 149 out of 160 150. According to the Undersea and Hyperbaric Medical Society (UHMA) guidelines, the peer review level for the maximum number of treatments for chronic refractory osteomyelitis is: Deselect Answer A. 5 B. 10 C. 1 D. 20 E. 40 None 150 out of 160 151. Peer review should be obtained after how many HBO treatments for carbon monoxide Deselect Answer A. 5 B. 20 C. 3 D. 40 E. 50 None 151 out of 160 152. According to Undersea and Hyperbaric Medical Society Guidelines, osteoradionecrosis presenting as a pathological fracture is classified as: Deselect Answer A. Stage 1 B. Stage 2 C. Stage 3 D. Stage 4 E. Stage 5 None 152 out of 160 153. Which of the following conditions is a contraindication to serving as an inside attendant in a clinical multiplace hyperbaric chamber? Deselect Answer A. suffering from iron deficiency anemia B. pregnancy C. being over 40 D. having a history of hepatitis C E. episode of decompression sickness 2 years ago None 153 out of 160 154. What should be done with the cuff in order to prevent an endotracheal tube from malfunctioning during hyperbaric oxygen treatment in a monoplace chamber? Deselect Answer A. over inflated with oxygen to 4.0 ATA B. completely deflated C. filled with saline D. filled with helium to 2.0 ATA E. intubation is contraindicated for monoplace treatment None 154 out of 160 155. Intravascular bubbles may: Deselect Answer A. stimulate platelet aggregation and reduce platelet count B. enature lipoproteins C. activate and aggregate leukocytes D. increase release of cytokines E. all of the above None 155 out of 160 156. Patient has had retinal surgery requiring intraocular gas 2 weeks ago. He presents for HBO treatment for an unrelated diagnosis. Deselect Answer A. Bubbles in the eye do not cause damage expanding and contracting with HBO treatment. B. Hyperbaric treatment should be delayed for at least a month. C. HBO may be started at 2 weeks post op. D. Bubbles affect the anterior chamber of the eye the same as the vitreous of the eye. E. The patient will have an increased risk of developing myopia (near sightedness). None 156 out of 160 157. Optimal utilization of HBOT in a patient diagnosed with central retinal artery occlusion (CRAO) occurs when HBOT is initiated: Deselect Answer A. within the first 24 hours B. within the first 48 hours C. within the first week D. within two weeks E. none of the above None 157 out of 160 158. A diabetic foot ulcer that contains exposed tendon with evidence of infection would be a classified under the Wagner system as: Deselect Answer A. Wagner 0 B. Wagner 1 C. Wagner 2 D. Wagner 3 E. Wagner 4 None 158 out of 160 159. Which of the following increases susceptibility to oxygen toxicity: Deselect Answer A. Acetaminophen B. Propranolol C. Corticosteroids D. Vitamin D E. Vitamin E None 159 out of 160 160. In the early management of decompression sickness, you should first: IMPORTANT: This is the last question. Please review your answers before clicking on Submit. Once you have submitted your exam all answers are final and cannot be changed or undone. Deselect Answer A. place the patient in the head down (Trendelenberg) position B. administer steroids C. administer oxygen D. administer Dilantin E. administer aspirin None 160 out of 160 You cannot switch tabs while taking this quiz!You are not allowed to switch tabs violation has been recorded.You cannot minimize full screen mode!You are not allowed to minimize full screen while taking this quiz, violation has been recorded.Access denied! To begin the quiz, please grant this quiz access to your camera.Time is Up! Previous Story Next Story
