O O Akinwalere1, B O Adeniyi1, O F Awopeju2, G E Erhabor3. 1. Internal Medicine, Federal Medical Centre, Owo, Nigeria. 2. Internal Medicine, Obafemi Awolowo Univ, Ile Ife,Nigeria. 3. Internal Medicine, Obafemi Awolowo University, Ile-Ife Osun State, Nigeria.
Abstract
BACKGROUND: Poor sleep quality is reportedly common among asthmatic patients, however, there is little or no data among Nigerian asthmatics. The purpose of this study was to determine the contribution of sleep quality to Asthma control OBJECTIVE-To determine the impact of sleep quality on asthma control amongst asthma patients at Federal Medical Centre, Owo, Ondo State. METHODS-This was a cross sectional study evaluating 100 clinically stable asthmatic patients at the outpatient department at Federal Medical Center, Owo. Subjective sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) and Daytime sleepiness was assessed using the Epworth sleepiness scale (ESS). Asthma control was assessed by Asthma Control Test (ACT) score. Peak Expiratory Flow variability (PEF) was used to determine average daily variability in lung expiratory flow and this was used to monitor asthma control and severity over a period of two weeks. Additionally, lung function was assessed by spirometry. RESULTS: The mean age of the study population was 45.2 ± 17. 5years. Sixty patients (60%) had poor quality of sleep (PSQI > 5), while fifty-three patients (53%) had excessive daytime sleepiness (ESS>9). Increasing global PSQI score (poor sleep quality) was associated with decreasing ACT score (poor asthma control) with (r=-0.63; p <0.001). Multiple regression analysis showed that quality of sleep was the independent predictor of asthma control in our patients (p= <0.001). CONCLUSION: Results from this study suggest that quality of sleep is a significant determinant of asthma control in asthmatic patients. Therefore, efforts should be made to screen patients with asthma for sleep impairment.
BACKGROUND: Poor sleep quality is reportedly common among asthmatic patients, however, there is little or no data among Nigerian asthmatics. The purpose of this study was to determine the contribution of sleep quality to Asthma control OBJECTIVE-To determine the impact of sleep quality on asthma control amongst asthmapatients at Federal Medical Centre, Owo, Ondo State. METHODS-This was a cross sectional study evaluating 100 clinically stable asthmatic patients at the outpatient department at Federal Medical Center, Owo. Subjective sleep quality was assessed using the Pittsburgh Sleep Quality Index (PSQI) and Daytime sleepiness was assessed using the Epworth sleepiness scale (ESS). Asthma control was assessed by Asthma Control Test (ACT) score. Peak Expiratory Flow variability (PEF) was used to determine average daily variability in lung expiratory flow and this was used to monitor asthma control and severity over a period of two weeks. Additionally, lung function was assessed by spirometry. RESULTS: The mean age of the study population was 45.2 ± 17. 5years. Sixty patients (60%) had poor quality of sleep (PSQI > 5), while fifty-three patients (53%) had excessive daytime sleepiness (ESS>9). Increasing global PSQI score (poor sleep quality) was associated with decreasing ACT score (poor asthma control) with (r=-0.63; p <0.001). Multiple regression analysis showed that quality of sleep was the independent predictor of asthma control in our patients (p= <0.001). CONCLUSION: Results from this study suggest that quality of sleep is a significant determinant of asthma control in asthmatic patients. Therefore, efforts should be made to screen patients with asthma for sleep impairment.