• Xinpeng Xu, Zhiwei Wang, Hongying He, Wenyan Shi, Wei Zeng, Zhaoqiong Zhu, Xingkui Liu, Zhao Wang, and Yi Zhang.
• Department of Anesthesiology, The Second Affiliated Hospital of Zunyi Medical University, ZunYi, GuiZhou, China.
• J Clin Anesth. 2024 Dec 1; 99: 111646111646.

BackgroundLimited literature exists on the vascular reactivity of the radial and ulnar arteries in hypertensive patients following radial artery cannulation. This study assessed the vascular reactivity of the radial and ulnar arteries by comparing Doppler images and laser speckle contrast imaging (LSCI) obtained from both normotensive and hypertensive patients after radial artery cannulation under general anesthesia.MethodsThis study recruited 99 normotensive and 99 hypertensive patients who required arterial cannulation under general anesthesia. In the course of research, to evaluate the impact of hypertension on arterial reactivity, we employed duplex Doppler ultrasonography to measure the inner diameter (ID), resistance index (RI) and mean volume flow (MVF) of both arteries at five different time points. We equally performed perfusion of thumb and little finger by laser speckle contrast imaging.ResultsAfter radial artery cannulation, the hypertensive group showed less increase in radial ID and less decrease in RI compared to the normotensive group. The MVF increase was also less pronounced in hypertensive patients, while both groups demonstrated equivalent ulnar ID changes, and the normotensive group exhibited a more significant decrease in RI and a greater MVF increase. Thumb perfusion decreased post-cannulation in both groups, with the hypertensive group showing a less robust recovery. Little finger perfusion increased after artery cannulation in both groups, but the hypertensive group's increase was lower. The incidence of vasospasm in the hypertensive group is higher than that in the normotensive group.ConclusionsThe radial and ulnar arteries in hypertensive patients may lack a compensatory response to radial artery cannulation during general anesthesia.Copyright © 2024. Published by Elsevier Inc.

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