Medical safety adverse event refers to the clinical diagnosis and treatment activities as well as the operation of the hospital, any factors and events that may affect the patient's diagnosis and treatment results, increase the patient's pain and burden, and may lead to medical disputes or medical accidents, as well as affecting the normal operation of the medical work and the personal safety of medical personnel.
Damage caused by diagnostic and treatment activities rather than the disease itself, including diagnostic and treatment errors and their related facilities, equipment and other damages.