August 16th calm surgical ward contains danger, bed 2 patient, 75 years old, due to spinal fracture in January, usually have a history of premature heartbeat, never standardized diagnosis and treatment, due to back pain and worry about their own body, the patient has not rested well for 2 days, and after eating watermelon nausea and vomiting, eating less, the morning of the 16th check, the patient’s condition is very stable, in the hanging saline suddenly appear chest tightness shortness of breath, cold sweat, not relieved after oxygen. The patient was not relieved by oxygen inhalation, and the electrocardiogram monitor showed low oxygen at the end of the finger, low blood pressure, heart failure, cardioplegia, anesthesia, hormone treatment, etc., but did not improve, nodding breathing, indifference, emergency tracheal intubation, simple respirator assisted breathing, emergency transfer to NICU ventilator maintenance treatment, the patient gradually awake. The patient was considered to be in acute left heart failure, low cardiac output, respiratory failure, and then the patient had complications such as modern acidity, anuria, and pulmonary infection, etc. After treatment, the internal environment was basically stable, and the renal function was normal, the tracheal intubation was removed, and BIPA assisted ventilation, back patting and suctioning, and respiratory training were changed.