• Sanjith Saseedharan, Shalaka Patil, Sonal Rambhad, Vaijaynti Kadam, Ashish Yadav, and Rujuta Bagade.
• Department of Anaesthesiology and Critical Care, S.L. Raheja Hospital, Mumbai, India.
• J Coll Physicians Surg Pak. 2023 Oct 1; 33 (10): 120412061204-1206.

AbstractCOVID-19 ARDS (acute respiratory distress syndrome), caused by SARS-CoV-2, involves a decrease in the end expiratory lung volume (EELV), compliance, and hypoxemia. The authors retrospectively analysed the relationship between the EELV, Plateau pressure (Pplat), and compliance of the respiratory system in a group of 21 mechanically ventilated COVID ARDS patients with moderate to severe hypoxia who were subjected to a recruitment manoeuvre. Further, these parameters were studied after dividing them into two groups as Group 1 of clinically non-recruitable and Group 2 of clinically recruitable patients. There was relationship between EELV, compliance, and Pplat among those patients who were clinically recruited versus those who were not in a homogeneous group of COVID ARDS patients. In Group 1, the statistical value of EELV and compliance were r = 0.395, p>0.05, EELV and Pplat were r = 0.021, p>0.05, and compliance and Pplat were r = -0.848, p<0.001. In Group 2, the statistical values of EELV and compliance were (r = 0.605, p<0.001), EELV and Pplat were r = -0.391, p<0.05, compliance and Pplat were r = -0.848, p<0.001. The additional information gained after understanding this relationship can help to optimise ventilator settings. Key Words: COVID, ARDS, End expiratory lung volume, Plateau pressure, Compliance, Recruitment, Ventilation.

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