FREQUENCY OF OBSTRUCTIVE SLEEP APNEA IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN A TEACHING HOSPITAL IN MULTAN

摘要

Obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease(COPD) are two different diseases that may coexist within an individual and is known as overlapsyndrome. Treatment of choice for overlap patients is CPAP along with supplemental oxygen forcorrection of upper airway obstructive episodes and hypoxemia during sleep, which is differentfrom the treatment of COPD or OSA alone so detection of these cases is important for propermanagement of these patients. Objectives: To find out the frequency of obstructive sleep apneain patients with COPD. Study Design: Cross section study. Setting: Department of PulmonologyMultan Medical and Dental College; Tertiary care hospital. Period: Six months from July toDec 2017. Materials & Methods: 151 consecutive patients with diagnosed COPD attendingour Pulmonology Outpatient Department and fulfilling the inclusion and exclusion criteria wereincluded in the study. All the patients were asked questions from Berlin Sleep Questionnaire andcategorized into high or low likelihood for having OSA. Overnight polysomnography was donein those with high likelihood to confirm the diagnosis of obstructive sleep apnea. Results: Therewere 151 patients. Males were 125 (82.8%) whereas females were 26 (17.2%). Mean age of allpatients was 54.49+10.33 years. Mean values for height and weight were 160.9+1.05cm and62.33+1.39kg respectively. Mean BMI was 24.13+5. Mean for number of smoking pack yearswas 16.45+7.22. We found 16 patients (10.5%) to have OSA. Conclusion: Frequency of OSAin COPD patients is high and needs special attention while managing these patients. This canbe achieved by routine use of screening questionnaires and by conducting polysomnographywhere indicated.