新型コロナウイルス感染症（COVID-19）肺炎に合併した気胸

Experience of Treatment for Pneumothorax with Coronavirus Disease 2019 （COVID-19） Pneumonia

新型コロナウイルス感染症（coronavirus disease 2019：COVID-19）はsevere acute respiratory syndrome coronavirus 2（SARS CoV-2）が感染することにより発症し，多くの場合，無症状または感冒様症状を伴う軽症で自然治癒するが，時に急性呼吸促迫症候群，血栓症など重篤な疾患を合併する．特にCOVID-19肺炎は，人工呼吸器や体外式膜型人工肺など侵襲的な呼吸管理を要するような重篤な呼吸不全を生じるだけでなく，さまざまな合併症を伴うことがある．われわれは，COVID-19肺炎に合併した気胸の1例を経験したため報告する．

A 73 years old male patient with the past history of kidney transplantation was admitted to our hospital for treatment of coronavirus disease 2019 （COVID-19） pneumonia. On the 25th day after the onset of symptoms when his condition was improving, he suddenly developed pneumothorax. Chest tube drainage was performed and connected the tube to the drainage device using a high efficiency particulate air （HEPA） filter. Because of the improvement of infection, the HEPA filter was removed from the drainage device on day 28. Chest tube drainage was continued by day 35, and he was discharged and introduced home oxygen therapy on day 51.