Background: Systemic hypertension is a common condition affecting middle aged and elderly individuals. Studies have shown that about half of the patients who have essential hypertension have OSA and half of the patients having OSA have essential hypertension. Therefore, this study was conducted to study OSA in hypertensive patients (untreated and treated).
Material and Methods: Subjects with history of Hypertension (with or without treatment) were included in the study. Sleep questionnaire was administered, anthropometric measurements taken and patients were subjected to whole night polysomnography.
Observation and Results : 40% of untreated hypertensives and 38% of treated hypertensives had AHI greater than 5. Further it was found that severity of OSA increased as the Systolic, Diastolic Blood pressure increased. BMI, Male sex and treated-untreated hypertension were associated with sleep apnea.
Conclusion: Study demonstrated clear association between OSA and hypertension with upto 40 % hypertensives showing OSA.