Why did Zhang Jixing finally die in Chinese Doctors?

What I want to say is that my breathing has improved and I can get rid of the ventilator. However, dying of heart complications means that things are impermanent. I remember a similar case in the epidemic. COVID-19's nucleic acid turned negative and died of myocarditis after discharge.

On March 4th, 2020, a case of "sudden death" of COVID-19 was reported in Qiaokou District, Wuhan. Patient Li, male, 36 years old, was diagnosed as. On February 12, he was admitted to Hanyang Guobo Fangcang Hospital, and was discharged on February 26th. Then he was admitted to the designated hotel rehabilitation point for isolation. After staying for a day or two, symptoms such as dry mouth and abdominal distension appeared. On March 2, he developed fatigue and loss of appetite. On that day, the patient was transferred to the nearest hospital on 120 and died on 17:08. It is speculated that COVID-19 virus may attack the heart and lead to death caused by viral myocarditis. There is a line in the movie that impressed me deeply. COVID-19 is like a madman, pointing a gun at the patient, and the doctor can only respond passively. Maybe there is a prototype, which means that we don't know the virus yet, and things change. The medical staff struggled in this impermanence, painful and strong. Synopsis: Zhu Henan Provincial People's Hospital, chief physician of the National Advanced Stroke Center, treats countless patients with severe cardiovascular and cerebrovascular diseases in the emergency department every day. As a top expert in the industry, he just rides a small battery car to and from the hospital and home. Wang Dongjin, director of cardiothoracic surgery at Nanjing Gulou Hospital, would joke with the patients in the ward. He has to do many operations a day, because the long-term platform makes cervical spondylosis and varicose veins in his legs more and more serious. Shu, a plastic surgeon in the First Hospital of Jiaotong University, is the most trusted "comrade-in-arms" in the hospital. They have worked together for more than ten years, but seldom sit down and have a good meal. As a doctor in China, they are under great pressure every day, and they also have their own sadness and helplessness behind saving lives. Reference to the above content: Baidu Encyclopedia-Dr. China