Intermittent air-breathing is used in hyperbaric chambers to prevent which of the following?
a. Hyperventilation c. Hypoventilation
b. Oxygen toxicity d. Hypertension
ANS: B
Hyperbaric oxygenation is achieved by having the patient breathe oxygen by mask or through a specially designed hood while being exposed to elevated barometric pressures in the com-pressed-air chamber. Treatment schedules are tailored to the specific needs of the patient. Gener-ally, patients are placed on schedules in which intermittent air-breathing periods of 5 minutes or more are programmed approximately every 20 minutes to prevent oxygen toxicity to the patient.
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