BACKGROUND: Patients with chronic heart failure (CHF) have a high incidence of sleep disordered breathing (SDB). It is assumed that patients with the combination of CHF and SDB have more ventricular couplets and nonsustained ventricular tachycardia (NSVT) than patients without SDB. METHODS: In 63 patients, 49 men and 14 women with chronic heart failure (EF < 45%), all-night polysomnography and long-term-ECG were performed. Mean age was 59 ± 15 years, mean BMI 27 ± 5 kg/m(2). 56% had an ischemic, 44% a nonischemic heart disease. 51% had heart insufficiency classification NYHA III. RESULTS: 42 of the 63 patients (67%) had sleep disordered breathing (SDB) with an AHI ≥5/h. In 24 patients (38%) SDB was central, in 18 (29%) obstructive. More patients with SDB than patients without SDB had NSVT (50% vs. 19%). Nocturnal frequency of NSVT in patients with SDB was about twice as high as the rate observed during daytime (0.48/h vs. 0.21/h). In patients without SDB there was no relevant difference between day and night (0.23/h vs. 0.21/h). AHI correlated with NSVT (r = 0.329, p < 0.01). Day/night comparison of couplets was 2.3/h vs. 1.9/h in SDB patients and 2.0/h vs. 1.6/h in patients without SDB. CONCLUSIONS: Patients with chronic heart failure have a high prevalence of SDB. The combination of CHF and SDB predisposes for nocturnal malignant ventricular arrhythmias.
BACKGROUND:Patients with chronic heart failure (CHF) have a high incidence of sleep disordered breathing (SDB). It is assumed that patients with the combination of CHF and SDB have more ventricular couplets and nonsustained ventricular tachycardia (NSVT) than patients without SDB. METHODS: In 63 patients, 49 men and 14 women with chronic heart failure (EF < 45%), all-night polysomnography and long-term-ECG were performed. Mean age was 59 ± 15 years, mean BMI 27 ± 5 kg/m(2). 56% had an ischemic, 44% a nonischemic heart disease. 51% had heart insufficiency classification NYHA III. RESULTS: 42 of the 63 patients (67%) had sleep disordered breathing (SDB) with an AHI ≥5/h. In 24 patients (38%) SDB was central, in 18 (29%) obstructive. More patients with SDB than patients without SDB had NSVT (50% vs. 19%). Nocturnal frequency of NSVT in patients with SDB was about twice as high as the rate observed during daytime (0.48/h vs. 0.21/h). In patients without SDB there was no relevant difference between day and night (0.23/h vs. 0.21/h). AHI correlated with NSVT (r = 0.329, p < 0.01). Day/night comparison of couplets was 2.3/h vs. 1.9/h in SDB patients and 2.0/h vs. 1.6/h in patients without SDB. CONCLUSIONS:Patients with chronic heart failure have a high prevalence of SDB. The combination of CHF and SDB predisposes for nocturnal malignant ventricular arrhythmias.
Authors: Kengo Usui; T Douglas Bradley; Jonas Spaak; Clodagh M Ryan; Toshihiko Kubo; Yasuyuki Kaneko; John S Floras Journal: J Am Coll Cardiol Date: 2005-06-21 Impact factor: 24.094
Authors: S Javaheri; T J Parker; J D Liming; W S Corbett; H Nishiyama; L Wexler; G A Roselle Journal: Circulation Date: 1998-06-02 Impact factor: 29.690
Authors: Kenneth Dickstein; Alain Cohen-Solal; Gerasimos Filippatos; John J V McMurray; Piotr Ponikowski; Philip Alexander Poole-Wilson; Anna Strömberg; Dirk J van Veldhuisen; Dan Atar; Arno W Hoes; Andre Keren; Alexandre Mebazaa; Markku Nieminen; Silvia Giuliana Priori; Karl Swedberg Journal: Eur Heart J Date: 2008-09-17 Impact factor: 29.983