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VOLUME 15 , ISSUE 1 ( January-March, 2020 ) > List of Articles


Obesity Hypoventilation Syndrome: New Insights in Diagnosis and Management

Ketaki Utpat, Jyotsna M Joshi, Ramesh N Bharmal

Keywords : Obesity, Obesity hypoventilation syndrome, Sleep-disordered breathing

Citation Information : Utpat K, Joshi JM, Bharmal RN. Obesity Hypoventilation Syndrome: New Insights in Diagnosis and Management. Indian Sleep Med 2020; 15 (1):9-14.

DOI: 10.5005/jp-journals-10069-0048

License: CC BY-NC 4.0

Published Online: 01-03-2020

Copyright Statement:  Copyright © 2020; The Author(s).


Obesity hypoventilation syndrome (OHS) is a syndrome characterized by a constellation of obesity [body mass index (BMI) ≥ 30 kg/m2], daytime hypercapnia (arterial carbon dioxide tension ≥ 45 mm Hg), and sleep-disordered breathing (SDB), provided other conditions leading to alveolar hypoventilation have been objectively ruled out. Delayed diagnosis can precipitate significant cardiorespiratory morbidity in the form of pulmonary hypertension, heart failure, and coronary disease. Sleep fragmentation, oxidative stress, and obesity-related deconditioning are the predominant mechanisms of the clinical predicament and the poor quality of life. The diagnosis requires a due awareness about its presence and a prone index of suspicion in the suitable clinical context. The diagnosis is conclusively established on basis of a sleep study and arterial blood gases (ABGs). Management requires a holistic approach focusing on weight reduction, lifestyle modification, treatment of comorbidities, and control of the SDB by means of continuous positive airway pressure (CPAP) or noninvasive ventilation (NIV) and pulmonary rehabilitation. Opportune therapy facilitates an optimistic prognosis and improves the quality of life.

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