Barotrauma in a Previously Healthy and Young COVID-19 Patient: an Autopsy Case Report

Abstract

Abstract Introduction/Objective Since the emergence of a novel SARS-CoV-2 virus caused coronavirus disease 2019 (COVID-19), a great number of autopsy studies have been published. However, histopathologic studies focused on pulmonary barotrauma are very rare. Here we report an autopsy confined to the lungs on a young COVID-19 patient. Methods/Case Report The patient was a 37-year-old male, non-smoker, with no significant past medical history, and a body mass index of 24.1, who presented with shortness of breath and cough. A computerized tomography (CT) showed features of atypical pneumonia. The main abnormal laboratory data included elevated partial thromboplastin time, fibrinogen, and D-Dimer. The patient had been on mechanical ventilation for 35 days, and was complicated by recurrent pneumothoraces, hypotension, and worsening hypoxia. An autopsy limited to the lungs was performed after the patient expired. Grossly, the lungs showed increased weight, adhesions on visceral pleural surface, patchy consolidation and dilated subpleural cysts. Histological examination revealed cystically dilated/remodeled airspaces with extensive coagulative necrosis, focal alveolar hemorrhage and edema, focal confluent fibrosis, and subpleural blebs. Fresh fibrinous thrombi were seen in small- and medium-sized vessels. Viral cytopathic changes or significant inflammation were not observed. The findings in the lungs were consistent with barotrauma in COVID-19. Results (if a Case Study enter NA) NA. Conclusion This case demonstrates various histopathologic changes of the lungs in a previously healthy and young COVID-19 patient with prolonged hospital course of mechanical ventilation. The features of diffuse alveolar damage with inflammation usually seen in the early stage of barotrauma are not identified. Our findings in the lungs may represent the histopathologic characteristics of the later stage of barotrauma in COVID-19.