End-expiratory Lung Volumes As a Potential Indicator for COVID-19 Associated Acute Respiratory Distress Syndrome: a Retrospective Study
BMC Pulmonary Medicine(2024)
Abstract
End-expiratory lung volume (EELV) has been observed to decrease in acute respiratory distress syndrome (ARDS). Yet, research investigating EELV in patients with COVID-19 associated ARDS (CARDS) remains limited. It is unclear whether EELV could serve as a potential metric for monitoring disease progression and identifying patients with ARDS at increased risk of adverse outcomes. This retrospective study included mechanically ventilated patients diagnosed with CARDS during the initial phase of epidemic control in Shanghai. EELV was measured using the nitrogen washout-washin technique within 48 h post-intubation, followed by regular assessments every 3–4 days. Chest CT scans, performed within a 24-hour window around each EELV measurement, were analyzed using AI software. Differences in patient demographics, clinical data, respiratory mechanics, EELV, and chest CT findings were assessed using linear mixed models (LMM). Out of the 38 patients enrolled, 26.3
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Key words
End-expiratory lung volume,COVID-19,Acute respiratory distress syndrome,Mechanical ventilation
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