Clinical Edge

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Sleep Apnea and Cardiovascular Surgery

Does it affect outcomes?

Obstructive sleep apnea (OSA) is highly prevalent in patients undergoing cardiovascular surgery according to a study of 107 patients undergoing cardiovascular surgery. Researchers’ findings included:

• The apnea-hypopnea index (AHI) was ≥ 5 in 73.8% of patients; ≥ 10 in 58.9%; ≥ 15 in 47.7%; and ≥ 30 in 27.1%.

• Patients with AHI ≥ 15 had significantly lower left ventricle ejection fraction (LVEF).

• After adjusting for age, sex, race, BMI, and LVEF, there was no significant increase in odds for any postoperative outcomes associated with AHI levels.

Citation: Foldvary-Schaefer N, Kaw R, Collop N, et al. Prevalence of undetected sleep apnea in patients undergoing cardiovascular surgery and impact on postoperative outcomes. J Clin Sleep Med. 2015;11(10):1083–1089. doi: 10.5664/jcsm.5076.