Intermittent Versus Sustained Hypoxemia from Sleep-disordered Breathing: Outcomes in Patients with Chronic Lung Disease and High Altitude

Sleep Med Clin. 2024 Jun;19(2):327-337. doi: 10.1016/j.jsmc.2024.02.011. Epub 2024 Mar 21.

Abstract

In a variety of physiologic and pathologic states, people may experience both chronic sustained hypoxemia and intermittent hypoxemia ("combined" or "overlap" hypoxemia). In general, hypoxemia in such instances predicts a variety of maladaptive outcomes, including excess cardiovascular disease or mortality. However, hypoxemia may be one of the myriad phenotypic effects in such states, making it difficult to ascertain whether adverse outcomes are primarily driven by hypoxemia, and if so, whether these effects are due to intermittent versus sustained hypoxemia.

Keywords: Cardiometabolic outcomes; Combined hypoxia; Overlap hypoxia; Sleep apnea.

Publication types

  • Review

MeSH terms

  • Altitude*
  • Chronic Disease
  • Humans
  • Hypoxia*
  • Lung Diseases / complications
  • Sleep Apnea Syndromes* / complications
  • Sleep Apnea Syndromes* / therapy