부산대학교 도서관

A 56-year-old man was transported to our institution for dyspnea. He required mechanical ventilation due to severe Coronavirus Disease 2019 under deep sedation. We used propofol, midazolam, and dexmedetomidine. The patient developed bradycardia and sinus cardiac arrest. He returned to sinus rhythm after chest compression. Dexmedetomidine was the suspected drug involved in the cardiac arrest. The reasons were follows : 1) the heart rate improved promptly after discontinuation of dexmedetomidine, 2) bradycardia was not observed despite continuous administration of other drugs. Sinus cardiac arrest caused by dexmedetomidine is rare clinical condition. Strict monitoring is necessary under using dexmedetomidine.