To reveal the risk factors of intraoperative hypotension (IH) and investigate whether IH was corrected in time.
This retrospective cohort study included patients undergoing surgeries in one medical center. We divided all patients into two groups, the IH group and non-IH group. The clinical features of these two groups were compared and the independent risk factors for IH were analyzed.
A total of 5864 non-cardiac surgery patients were included, of which 931 patients had IH diagnose. The independent risk factors of IH include older age, high grade ASA physical status, intrathecal anesthesia, emergency surgery and medical history of hypertension (P<0.01). Among the patients with IH, 44.5% had hypotension lasting between 30 minutes and 120 minutes, and 25.2% had hypotension lasting more than 120 minutes. Patients with IH are more likely to develop major postoperative complications after surgery (p <0.01).
The independent risk factors of IH include older age, high grade ASA physical status, intrathecal anesthesia, emergency surgery and history of hypertension. Hypotension during surgery is not always effectively treated.

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