(1) Nursing accidents related to patients' safety, such as falling, medication errors, getting lost, inhalation or suffocation, burns, etc., occurred during hospitalization; (2) medical events such as serious complications, abnormal death, serious dysfunction, prolonged hospitalization time or increased hospitalization expenses due to diagnosis or treatment errors;
(3) serious adverse drug reactions or adverse blood transfusion reactions;
(4) Damage of medical devices or medical equipment to patients or medical personnel;
(5) Causing damage to patients due to public works personnel or accompanying personnel;
(6) Severe hospital infection;
(7) Emergencies, safety, information and other related adverse events.