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Clinical Trial Summary

People affected by Severe Acute Respiratory Syndrome (SARS) by COVID-19 virus my require a long lasting invasive mechanical ventilation life support. To prevent damages to the lungs a number of protective lung ventilation measures are taken, one of them encounters the positive end expiratory pressure (PEEP) titration. Up to date, it is unclear the best method to titrate PEEP considering this unconventional syndrome compared to other etiologies. In addition to the long lasting advanced life support and bedridden condition, other factors may affect respiratory and peripheral muscle function of these patients. Therefore, the investigators intend to follow up these patients randomized to one of the three-arm experimental PEEP titration and after ICU discharge their status on clinical, laboratory and physical functions assessments.


Clinical Trial Description

Introduction: Coronavirus Disease 2019 (COVID-19), caused by Severe Acute Respiratory Syndrome - Coronavirus-2 (SARS-CoV-2) requires mechanical ventilatory (MV) life support. In this scenario, lung protective strategies have been recommended for avoiding ventilator induced lung injuries mainly by inappropriate positive end expiratory pressure (PEEP) titration. However, the best method of PEEP titration for these patients remains unclear, since its clinical and morphofunctional phenotype may differ from the conventional acute respiratory distress syndrome (ARDS) phenotype resulted from other etiologies. In addition, these patients' condition of long lasting MV dependency and bed restriction may lead to deterioration of respiratory and peripheral muscles functions. Objective: To compare the clinical and laboratory evolution and the respiratory and peripheral muscle functions in mechanically ventilated patients with COVID-19 submitted to PEEP titration by the following methods: ARDSNet protocol, driving pressure (DP) and electrical impedance tomography (EIT), as well as following them up after hospital discharge. Methods: This is a controlled, randomized, double blind clinical trial with 90 mechanically ventilated patients to be randomized in one of the 3 PEEP titration- related groups: ARDSNet protocol, Driving Pressure-DP (electing PEEP level by the lowest DP) and by the EIT (PEEP selected will be the closest level above the intercept point of cumulated collapse and overdistension percentage curves). Clinical, laboratory, oxygenation, ventilation, respiratory and regional mechanics data, as well as peripheral muscle outcomes (strength and functionality) will be monitored from intubation to extubation in the supine and prone position. The outcomes of respiratory and peripheral muscles functionality will be monitored for six months after hospital discharge. All ethical principles will be respected with either written Free and Consent Term by the patient or relatives at the intensive care phase or at the post ICU discharge phase. Data will be registered for posterior analysis, which considers the difference between groups with p <0.05. Expected results: Based on this study, it is expected to identify the Peep titration method associated to the greater beneficial and less deleterious effects in critically ill patients on MV. Also to address appropriate lung protective ventilation strategy for these patients and to detect respiratory and peripheral muscle disorders as early as possible in critically ill survivors. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05024500
Study type Interventional
Source University of Pernambuco
Contact
Status Completed
Phase N/A
Start date October 21, 2020
Completion date December 30, 2022

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