India
Research Article
Is Obstructive Sleep Apnea more Prevalent than Central Sleep Apnea in Patients with Systolic Heart Failure? A Retrospective Study
Author(s): Hasan A, Uzma N, Abdullah F, Hannan HA, Narasimhan C and Rao LHasan A, Uzma N, Abdullah F, Hannan HA, Narasimhan C and Rao L
Central sleep apnea (CSA) rather than obstructive sleep apnea (OSA) is widely believed to be the dominant form of sleep apnea (SA) in patients with heart failure (HF). Hitherto, no study has characterized sleep disordered breathing (SDB) in Indian subjects with heart failure and evaluated its impact on severity of HF, which this study attempts to do. A retrospective data-analysis was done in 65 consecutive patients with stable mild-to-moderate HF referred for evaluation on the basis of fatigue and excessive daytime somnolence (EDS) regarded by the institute’s cardiologists. Patients with ejection fraction (EF) <55% or LV fractional shortening of 28% were included in the study. PSG was scored according to current AASM recommendations. Based on the Apnea-Hypopnea Index (AHI), OSA was classified as mild (AHI:5-15), moderate (AHI: 15-30) and severe (AHI: >30). HF was arbitrari.. Read More»
DOI:
10.4172/2472-1247.1000126
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