The prevalence and significance of periodic leg movements during sleep in patients with congestive heart failure
Santos-Silva, Rogerio [UNIFESP]
Alves, Rosana S Cardoso
Figueiredo, Adelaide Cristina de
Is part ofSleep and Breathing
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The aim of this study was to evaluate (1) the prevalence of periodic leg movements during sleep (PLMs) in a consecutive sample of congestive heart failure (CHF) outpatients; (2) the presence of correlation between PLMs, subjective daytime sleepiness, and sleep architecture; and (3) the heart rate response to PLMs in CHF.Seventy-nine [50 men, age 59 +/- 11 years, body mass index (BMI) 26 +/- 5 kg/m(2)] consecutive adult stable outpatients with CHF [left ventricular ejection fraction (LVEF) 36 +/- 6%] were prospectively evaluated. the patients underwent assessment of echocardiography, sleepiness (Epworth Scale), and overnight in-lab polysomnography.Fifteen patients (19%) had PLM index > 5. These subjects were similar in sex distribution, BMI, subjective somnolence, LVEF, and apnea-hypopnea index (AHI), but were significantly older than subjects without PLMs. Sleep architecture was similar in subjects with and without PLMs. There was a small but significant elevation of heart rate after PLMs (80.1 +/- 9.4 vs. 81.5 +/- 9.2; p < 0.001). the cardiac acceleration was also present in absence of electroencephalogram activation.The prevalence of PLMs in consecutive sample of adult CHF outpatients was 19%. There were no differences in subjective daytime sleepiness, sleep architecture, AHI, and severity of CHF in subjects with and without PLMs. PLMs caused a small but statistically significant cardiac acceleration.
CitationSleep and Breathing. Heidelberg: Springer Heidelberg, v. 13, n. 1, p. 43-47, 2009.
SponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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