Obstructive Lung Diseases: Airways 2 |

Association of OSA Risk in Asthma FREE TO VIEW

Narendra Umashankar, MBBS; K C Agarwal, MD; Gopal Purohit, MD; Sunil Vyas; Srikant Agarwal, MBBS; Isha Garg, MBBS; Deepak Ug, MD
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Dr S.N. Medical College, Jodhpur, India

Copyright 2016, American College of Chest Physicians. All Rights Reserved.

Chest. 2016;150(4_S):845A. doi:10.1016/j.chest.2016.08.945
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SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 26, 2016 at 01:30 PM - 02:30 PM

PURPOSE: To evaluate the prevalence of increased OSA risk in Asthmatics and to compare the risk of OSA with level of Asthma control

METHODS: 119 known cases of Asthma attending outpatient were enrolled. After obtaining detailed history, they were evaluated for level of Asthma control by GINA guideline & STOP-BANG questionnaire for the evaluation of OSA risk. Patients were subjected to spirometry before and after bronchodilation.

RESULTS: High OSA risk was found in 26% of the patients of asthma. One way ANOVA showed High OSA risk was associated with increased age (p<0.001), longer duration of illness (p-0.002), Increased BMI (p<0.001) & decreased FEV1 (p=0.024) and SPO2 (p=0.001). Chi-square tests showed significant associations Of OSA risk with poor control of asthma (p<0.001), grade of dyspnoea (p<0.001), Night symptoms of asthma (p=0.02), Rhinitis (p=0.03), GERD (p=0.008) and smoking (p=0.023). On multivariate regression models predicting high OSA risk, Poor asthma control (Sig-0.003), age (Sig-0.009) & BMI (sig-0.000) showed association with high OSA risk.

CONCLUSIONS: OSA and asthma are detrimental to each other. OSA risk is increased in asthmatic patients and OSA is an independent risk factor for poor asthma control. STOP-BANG questionnaire may serve as an effective screening tool in asthma patients for identifying high OSA risk, in whom polysomnography may be considered for definitive diagnosis.

CLINICAL IMPLICATIONS: Obstructive sleep Apnea (OSA) and Asthma both are highly prevalent diseases which share several co-morbidities and risk factors in common. Both exert influences on each other

DISCLOSURE: The following authors have nothing to disclose: Narendra Umashankar, K C Agarwal, Gopal Purohit, Sunil Vyas, Srikant Agarwal, Isha Garg, Deepak Ug

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