• Sisi Dai, Xinglu Li, Yue Yang, Yanan Cao, E Wang, and Zhitao Dong.
• Department of Anaesthesiology, Xiangya Hospital, Central South University, Changsha, People's Republic of China.
• Int. J. Clin. Pract. 2020 Aug 1; 74 (8): e13521.

Aim Of The StudyTo reveal the risk factors of intraoperative hypotension (IH) and investigate whether IH was corrected in time.Methods Used To Conduct The StudyThis retrospective cohort study included patients undergoing surgeries in one medical centre. 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 analysed.Results Of The StudyA 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 American Society of Anaesthesiologists (ASA) physical status, intrathecal anaesthesia, emergency surgery and medical history of hypertension (P < .01). Among the patients with IH, 44.5% had hypotension lasting between 30 and 120 minutes, and 25.2% had hypotension lasting >120 minutes. Patients with IH are more likely to develop major post-operative complications after surgery (P < .01).ConclusionsThe independent risk factors of IH include older age, high grade ASA physical status, intrathecal anaesthesia, emergency surgery and history of hypertension. Hypotension during surgery is not always effectively treated.© 2020 John Wiley & Sons Ltd.

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