Author + information
- Mahmoud Abdelsabour,
- Suzan A. Salama,
- Amany Omar,
- Yasser A. Ahmed,
- Mohamed Seddik and
- Doaa A. Magdy
The aims of this study are to (1) detect the effect of different types of heart disease (ischemic, cardiomyopathy, hypertensive heart failure) on the association with sleep disorders. (2) identify the relation of Cheyne Stoke respiration and left ventricular dysfunction.
In a cross sectional study involving 100 heart failure patients, we performed echocardiography and full night-attended polysomnography for all patients.
47.9% of patients with ischemic heart disease had obstructive sleep apnea (OSA) while 37.5% had central sleep apnea (CSA). OSA was highly prevalent in hypertensive heart disease (79.2%). On the other hand, patients with dilated cardiomyopathy had CSA presented in 50.0% vs. 39.3% had OSA. Patients with dilated cardiomyopathy had a significant increase in the central apnea index (11.05± 9.19 event/h) as well cycle length of Cheyne stoke respiration (68.14 ± 13.26 sec) as compared with other groups. There were inverse increase of cycle length with reduction in left ventricular ejection fraction (LVEF) (LVEF ≥ 50% had cycle length of 41.55 ± 10.84 s. while those with LVEF ≤ 30% had a longer mean cycle length 69.23 ± 18.09 s.
Sleep-disordered breathing (SDB) is a common disorder in different groups of heart failure. OSA was prevalent in ischemic and hypertensive heart disease, while CSA was prevalent in dilated cardiomyopathy.