as follows:
1. Adverse events are defined as injuries caused by medical treatment that, contrary to the natural regression of the disease, prolong the patient's hospitalization and lead to disability in all events, including both preventable and non-preventable adverse events. Unpreventable adverse events refer to non-preventable injuries caused by correct medical behavior; preventable adverse events refer to injuries caused by medical treatment due to unguarded errors or equipment failures.
2, adverse events are divided into many kinds, can be divided into: drug adverse events and medical device adverse events and nursing adverse events.
Generally speaking, adverse drug reactions are those for which causality has been established, while adverse drug events are those for which causality has not been established.
An adverse medical device event is any harmful event that occurs under normal use of an approved and qualified medical device that causes or may cause harm to the human body and is unrelated to the intended effect of the use of the medical device.
Nursing adverse event refers to nursing-related injuries, in the process of diagnosis and care of any possible impact on the patient's diagnosis and treatment results, increase the patient's pain and burden and may cause nursing disputes or accidents.
Classification of adverse medical events: SH9 classification
Level I - the fact that there is a fault and the consequences, if there is a causal relationship between the two, depending on the severity of the consequences of the "medical incident" or "medical error". "Medical error", should be the highest level of adverse events.
Level II - no fault fact but caused the consequences of the event: medical behavior is not at fault, mainly caused by drugs, medical devices, implants and other medical accidents, or unavoidable medical complications and the natural regression of the disease.
Grade III - events with fault facts but without consequences: although the fact of error occurred (meaning that the wrong behavior has been committed on the patient), but did not cause any damage to the patient's organism and function or have minor consequences, and can be fully recovered without any treatment.
Level IV - events without the fact of fault and without consequences: the lowest level due to the fact that the error was detected in time and did not result in the fact of fault in the medical act.