Research
Hormonal
Nocturnal supplemental oxygen does not reduce blood pressure in patients with obstructive sleep apnea, despite effectively reducing nocturnal hypoxemia.
If you have sleep apnea, using supplemental oxygen at night will not lower your blood pressure, even if it improves your oxygen levels. CPAP is required to reduce blood pressure. Oxygen might be used for other reasons, but it is not a substitute for CPAP for cardiovascular risk reduction.
StrongRefutesHIGH confidence
In contrast to the beneficial effects of CPAP on blood pressure, the use of supplemental oxygen was not associated with a reduction in blood pressure, even though adherence was greater among patients receiving supplemental oxygen.
Why this rating
Randomized, controlled trial.
Source
CPAP versus Oxygen in Obstructive Sleep Apnea
Daniel J. Gottlieb et al. · New England Journal of Medicine · 2014
DOI 10.1056/nejmoa1306766
rct · n=318Cited 355×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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