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Obstructive sleep apnea is highly prevalent in COVID19 moderate to severe ARDS survivors: Findings of level I Polysomnography in a tertiary care hospital

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Study Objectives- Studies have found Obstructive Sleep Apnea (OSA) as a risk factor for increased risk for COVID19 Acute respiratory Distress Syndrome (ARDS); but most of the studies were done… Click to show full abstract

Study Objectives- Studies have found Obstructive Sleep Apnea (OSA) as a risk factor for increased risk for COVID19 Acute respiratory Distress Syndrome (ARDS); but most of the studies were done in already known patients of OSA. This study was done to find prevalence of OSA in patients with COVID-19 related acute respiratory distress syndrome. Methodology- A hospital based longitudinal study was conducted among COVID 19 Intensive Care Unit (ICU) survivors. All consecutive COVID19 with moderate to severe ARDS were evaluated for OSA by Level I Polysomnography (PSG) after 4-6 weeks of discharge. Prevalence of OSA and PSG variables {Total sleep time, Sleep efficiency, sleep stage percentage, Apnea Hypopnea Index (AHI), T90, nadir oxygen} was estimated. Results- Out of 103 patients discharged from ICU during study period (October 2020 to 15 December 2020), 67 underwent Level I PSG. Mean Age was 52.6 years and mean Body Mass Index was 27.5 Kg/m2. Total sleep time was 343.2 minutes, sleep efficiency was 75.9. OSA (AHI more than 5 ) was seen in 65/67 patients and 49 patients had moderate to severe OSA (i.e. AHI more than 15). Conclusion- Moderate-severe OSA was highly prevalent (73%) in COVID19 moderate to severe ARDS survivors. Role of OSA in pathophysiology of COVID19 ARDS needs further evaluation.

Keywords: covid19 moderate; apnea; covid19; severe ards; moderate severe

Journal Title: Sleep Medicine
Year Published: 2021

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