Legal analysis: arbitrary medical advice, not checking after medical advice, delaying medical advice. Cause analysis: lack of communication between doctors and nurses, wrong doctor's advice and continuous operation. Omission in execution, lax control, poor communication and delay in handling. Cause analysis: Nurses have poor initiative, failed to see new doctor's orders, copied doctor's orders wrongly, the examination of doctor's orders was disturbed or distracted, there was a lack of communication between nurses, and special doctor's orders were not handed over.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 128 If a patient suffers damage in medical activities and the medical institution or its medical personnel are at fault, the medical institution shall be liable for compensation.

Article 1221st If medical personnel fail to fulfill their medical obligations corresponding to the medical level at that time, thus causing damage to patients, medical institutions shall be liable for compensation.