- Original article
- Open Access
Sleep-disordered breathing in ischemic cardiomyopathy and hypertensive heart failure patients
Egyptian Journal of Bronchology volume 11, pages 154–160 (2017)
The aims of this study are to (a) detect the effect of different types of heart diseases [ischemic, cardiomyopathy, hypertensive heart failure (HF)] on the association with sleep disorders, and to (b) identify the relationship between Cheyne–Stokes respiration (CSR) and left ventricular dysfunction.
Materials and methods
In a cross-sectional study involving 100 HF patients, we performed echocardiography and a fullnight attended polysomnography for all patients.
In all, 47.9% of patients with ischemic heart disease had obstructive sleep apnea (OSA), whereas 37.5% had central sleep apnea (CSA). OSA was highly prevalent in patients with hypertensive heart disease (79.2%). On the other hand, 50.0% patients with dilated cardiomyopathy (DCM) had CSA, whereas 39.3% had OSA. Patients with DCM had a significant increase in the central apnea index (11.05±9.19 events/h), as well cycle length of CSR (68.14 ±13.26 s), as compared with other groups. There was an inverse increase of cycle length with reduction in left ventricular ejection fraction (LVEF) (LVEF≥50% had a cycle length of 41.55±10.84 s, whereas those with LVEF≤30% had a longer mean cycle length of 69.23±18.09 s).
Sleep-disordered breathing is a common disorder in different groups of HF. OSA was prevalent in ischemic and hypertensive heart disease, whereas CSA was prevalent in DCM. There was a significant increase in cycle length of CSR with a reduction in LVEF.
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Salama, S., Omar, A., Ahmed, Y. et al. Sleep-disordered breathing in ischemic cardiomyopathy and hypertensive heart failure patients. Egypt J Bronchol 11, 154–160 (2017). https://doi.org/10.4103/ejb.ejb_42_16
- cheyne–stokes respiration
- heart failure
- sleep-disordered breathing