Respiratory Question for the Week of March 18, 2024


How does the administration of a hypoxic challenge assist in the assessment and diagnosis of hypoxia, and what specific clinical scenarios warrant the use of this diagnostic approach?


Hypoxia is a state of oxygen deficiency in the body that is sufficient to cause an impairment of function. Hypoxia is caused by the reduction in partial pressure of oxygen, inadequate oxygen transport, or the inability of the tissues to use oxygen. Hypoxic hypoxia is a reduction of oxygen passing into the blood that may be caused by a reduction in oxygen pressure in the lungs, by a reduced gas exchange area, exposure to high altitude, or by lung disease. During the hypoxic challenge, patients breathe in a reduced concentration of oxygen. Note that hypoxia is assessed through oxygen saturation measurements to identify those patients requiring supplemental oxygen.

This question was answered in our Coding Essentials for RT/Pulmonary Function. For more hot topics relating to respiratory services, please visit our store or call us at 1.800.252.1578, ext. 2.

Print Friendly, PDF & Email

CPT® copyright 2023 American Medical Association (AMA). All rights reserved.

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

CPT is a registered trademark of the American Medical Association.

Happy World Health Day! Our exclusive webcast, ‘2024 SDoH Update: Navigating Coding and Screening Assessment,’  is just $99 for a limited time! Use code WorldHealth24 at checkout.

SPRING INTO SAVINGS! Get 21% OFF during our exclusive two-day sale starting 3/21/2024. Use SPRING24 at checkout to claim this offer. Click here to learn more →