Paranephric air in COVID-ARDS patient: an extension of pneumothorax

Barotrauma and COVID-19

“…With further pressure, the EAA moves along the large vessels into the retroperitoneum to form pneumoretroperitoneum. This explains the air in the case report [1]. When large pressures are applied to the lungs, the EAA can also form pneumoperitoneum.…”

“…The evidence of the extra-alveolar air (EAA) described in a recent publication in Intensive Care Medicine [1] is explained in an important publication by Macklin and Macklin in the 1940s [2]. Over many years, they applied increasing pressure to anaesthetised cats and carefully dissected them.…”