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ORIGINAL ARTICLE
Year : 2013  |  Volume : 14  |  Issue : 1  |  Page : 17-21

Snoring and risk for obstructive sleep apnea among nigerians with heart failure: Prevalence and clinical correlates


Department of Medicine, Division of Cardiology, Ladoke Akintola University of Technology Teaching Hospital, Ogbomosoc, Nigeria

Correspondence Address:
Adeseye A Akintunde
P.O. Box 3238, Osogbo
Nigeria
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1995-705X.107115

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Background: Heart failure is an important cause of morbidity and mortality in developing nations like Nigeria. Sleep apnea and snoring has recently been recognized to be a cardiovascular risk factor. Sleep apnea is yet to be well studied among Africans with heart failure. We aimed to determine the prevalence of snoring and high risk for obstructive sleep apnea among Nigerians with stable heart failure. Materials and Methods: We studied 103 subjects that included 62 patients with heart failure and 41 control subjects. Demographic parameters and clinical examination were performed on the participants. The Berlin score and the Epworth Sleepiness Scale were administered for each participant. Echocardiography was done on all participants. Statistical analysis was done using Statistical Package for Social Sciences (SPSS) 17.0. Results: Snoring was reported in 48.4% of subjects with heart failure compared to 22.0% of control subjects ( P < 0.005). High risk for obstructive sleep apnea using the Berlin score was documented in 51.6% of heart failure subjects compared to 7.31% of controls. Excessive daytime somnolence occurred more in heart failure patients (51.6% vs. 9.8%, P < 0.05). Snorers tended to be older and were more likely to be obese than nonsnorers. Systolic blood pressure and fasting blood sugar were significantly higher among heart failure subjects with snoring than those without snoring (131.9 ± 19.2 vs. 119.2 ± 15.7 and 6.0 ± 0.8 vs. 5.4 ± 2.7, P < 0.005). Conclusion: Heart failure seems to be associated with snoring and a high risk for obstructive sleep apnea among Africans with heart failure. Assessment for sleep disordered breathing should be incorporated into their routine clinical workup.


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