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Snoring and obstructive sleep apnoea syndrome among hypertensive Nigerians: Prevalence and clinical correlates
Abstract
Background: Obstructive sleep apnoea (OSA) syndrome is a common disorder in the community. Association between hypertension and sleep apnoea and /or snoring has been described. The Berlin questionnaire is a validated instrument that is used to identify individuals who are at risk for OSA. The study aim to describe the prevalence of snoring and OSA among hypertensive subjects in South Western, Nigeria.
Methods: This was a descriptive study conducted at the Cardiology clinic of Ladoke Akintola University of Technology LAUTECH Teaching Hospital, Osogbo, South West Nigeria. One hundred consecutive hypertensive patients were recruited from the clinic. The Berlin questionnaire and the Epworth sleepiness scale (ESS) were used to determine excessive daytime sleepiness and the risk of having OSA. Statistical analysis was done using SPSS 16.0. Data were summarized as means ± S.D and percentages.
Results: The study participants consisted of 40 males (40.0%). The demographic data were similar between both genders except that females had higher mean body mass index than males. The prevalence of snoring was 50.0%. 52% were categorized as being at high risk of having OSA. Snorers were more likely to be older, males and to have a higher fasting blood sugar than non-snorers.96% of snorers reported excessive daytime somnolence as predicted by the ESS score compared to 4% of non snorers. Prevalence of snoring was also higher among overweight and obese hypertensive subjects than normal body mass index hypertensive subjects.
Conclusion: Snoring is common among hypertensive subjects in South Western Nigeria. Clinically suspected OSA was similarly high in prevalence among them. Early identification and management may reduce the cardiovascular risk of hypertensive subjects.
Methods: This was a descriptive study conducted at the Cardiology clinic of Ladoke Akintola University of Technology LAUTECH Teaching Hospital, Osogbo, South West Nigeria. One hundred consecutive hypertensive patients were recruited from the clinic. The Berlin questionnaire and the Epworth sleepiness scale (ESS) were used to determine excessive daytime sleepiness and the risk of having OSA. Statistical analysis was done using SPSS 16.0. Data were summarized as means ± S.D and percentages.
Results: The study participants consisted of 40 males (40.0%). The demographic data were similar between both genders except that females had higher mean body mass index than males. The prevalence of snoring was 50.0%. 52% were categorized as being at high risk of having OSA. Snorers were more likely to be older, males and to have a higher fasting blood sugar than non-snorers.96% of snorers reported excessive daytime somnolence as predicted by the ESS score compared to 4% of non snorers. Prevalence of snoring was also higher among overweight and obese hypertensive subjects than normal body mass index hypertensive subjects.
Conclusion: Snoring is common among hypertensive subjects in South Western Nigeria. Clinically suspected OSA was similarly high in prevalence among them. Early identification and management may reduce the cardiovascular risk of hypertensive subjects.
