• Ahlem Trifi, Asma Ouhibi, Asma Mahdi, Linda Masseoud, Eya Seghir, Amal Meftah, Salim Sellaouti, Cyrine Abdennebi, Foued Daly, Yosr Touil, Sami Abdellatif, and Salah Ben Lakhal.
• Medical ICU, teaching hospital of la Rabta Faculty of medicine, Tunis El Manar University Tunis, Tunisia. Electronic address: trifiahlem2@gmail.com.
• J Crit Care. 2022 Aug 1; 70: 154048.

PurposeTo examine critical Covid-19-acute respiratory distress syndrome (C-ARDS) patients requiring mechanical ventilation (MV), using transthoracic echocardiography (TTE) coupled with bubble test (BT), in order to search a right/left shunt.MethodsA Cross-sectional and comparative study comparing several parameters according to the presence or not of shunt.Results75 patients were included. Twenty-three shunts (31%) were detected: patent foramen oval (PFO) type [n=11 (15%)] and trans-pulmonary transit of bubbles (TPBT) [n = 12 (16%)]. The shunt did not affect P/F ratio (P/F=77 vs 81, p=0.97), nor mortality.ConclusionA right/left shunt was detected in a third of studied patients similarly between PFO and TPBT without significant impact on P/F ratio or outcome.Copyright © 2022 Elsevier Inc. All rights reserved.

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