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Introduction Intra-operative hypotension occurs frequently during anaesthesia and is usually defined as a reduction in systemic arterial pressure below established thresholds [1]. Pre-operative volume depletion, anaesthesia-induced vasodilation, fluid shifts and surgical blood loss commonly contribute to its development [2]. Sustained or recurrent hypotension can impair organ perfusion and induce tissue ischaemia.
The authors have declared no competing interest. This research project was supported by the National Natural Science Foundation of China (82371059 (H.Z.), 82371060 (B.G.)), the Department of Science and Technology of Sichuan Province, China (2023JDZH0002 (H.Z.)), and Sichuan Provincial People Hospital (30320230095 (J.Y.), 30420220062 (J.Y.)), Natural Science Foundation of Sichuan Province (2024NSFC1719 (J.Y.),30420230353 (J.Y.)).
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