Among morbidly obese outpatients, 98% had sleep apnea (AHI ≥ 5) and 31% exhibited electrocardiographic abnormalities, with arrhythmia risk increasing in severe sleep apnea.
Cross-Sectional (n=52)
No
OBJECTIVE: To determine the prevalence of sleep apnea in morbidly obese patients and its relationship with cardiac arrhythmias. RESEARCH METHODS AND PROCEDURES: Fifty-two consecutive morbidly obese (body mass index > or = 40 kg/m2) outpatients from the Obesity Clinic of the National Institute of Nutrition Salvador Zubirán underwent two nights of polysomnography with standard laboratory techniques. Electrocardiographic polysomnography signals (Lead II) were evaluated by two experienced cardiologists, and sleep complaints were measured with a standard sleep questionnaire (Sleep Disorders Questionnaire). In order to make comparisons between groups with different severities of sleep-disordered breathing, we classified the patients in four groups using the apnea-hypopnea index (AHI): Group 1, AHI 5 or = 65 (n = 17). RESULTS: A wide range of sleep-disordered breathing, ranging from AHI of 2.5 to 128.9 was found. Ninety-eight percent of the sample (n = 51) had an AHI > or = 5 (mean = 51 +/- 37), and 33% had severe sleep apnea with AHI > or = 65 with a mean nocturnal desaturation time of or = 65) with severe oxygen desaturation (SaO2 < or = 65%).
Valencia‐Flores et al. (Mon,) conducted a cross-sectional in Morbid obesity (n=52). Sleep apnea was evaluated on Prevalence of sleep apnea (AHI >= 5). Among morbidly obese outpatients, 98% had sleep apnea (AHI ≥ 5) and 31% exhibited electrocardiographic abnormalities, with arrhythmia risk increasing in severe sleep apnea.