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Published in: Journal of Clinical Monitoring and Computing 2/2023

04-12-2022 | Ultrasound | Original Research

Relationships between common carotid artery blood flow and anesthesia, pneumoperitoneum, and head-down tilt position: a linear mixed-effect analysis

Authors: Hyun-Kyu Yoon, Hansu Bae, Seokha Yoo, Young-Won Kim, Jinyoung Bae, Sun-Kyung Park, Hansol Kim, Young-Jin Lim, Jin-Tae Kim

Published in: Journal of Clinical Monitoring and Computing | Issue 2/2023

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Abstract

This study investigated the effects of pneumoperitoneum and the head-down tilt position on common carotid artery (CCA) blood flow in surgical patients. Methods: This prospective observational study included 20 patients who underwent gynecological surgery. CCA blood flow was measured using Doppler ultrasound at four-time points: awake in the supine position [T1], 3 min after anesthesia induction in the supine position [T2], 3 min after pneumoperitoneum in the supine position [T3], and 3 min after pneumoperitoneum in the head-down tilt position [T4]. Hemodynamic and respiratory parameters were also recorded at each time point. Linear mixed-effect analyses were performed to compare CCA blood flow across the time points and assess its relationship with hemodynamic parameters. Results: Compared with T1, CCA blood flow decreased significantly at T2 (345.4 [288.0–392.9] vs. 293.1 [253.0–342.6], P = 0.048). CCA blood flow were also significantly lower at T3 and T4 compared with T1 (345.4 [288.0–392.9] vs. 283.6 [258.8–307.6] and 287.1 [242.1–321.4], P = 0.005 and 0.016, respectively). CCA blood flow at T3 and T4 did not significantly differ from that at T2. Changes in CCA blood flow were significantly associated with changes in cardiac index and stroke volume index (P = 0.011 and 0.024, respectively). Conclusion: CCA blood flow was significantly decreased by anesthesia induction. Inducing pneumoperitoneum, with or without the head-down tilt position, did not further decrease CCA blood flow if the cardiac index remained unchanged. The cardiac index and stroke volume index were significantly associated with CCA blood flow.
Clinical trial registration: Clinicaltrials.gov (NCT04233177, January 18, 2020).
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Metadata
Title
Relationships between common carotid artery blood flow and anesthesia, pneumoperitoneum, and head-down tilt position: a linear mixed-effect analysis
Authors
Hyun-Kyu Yoon
Hansu Bae
Seokha Yoo
Young-Won Kim
Jinyoung Bae
Sun-Kyung Park
Hansol Kim
Young-Jin Lim
Jin-Tae Kim
Publication date
04-12-2022
Publisher
Springer Netherlands
Published in
Journal of Clinical Monitoring and Computing / Issue 2/2023
Print ISSN: 1387-1307
Electronic ISSN: 1573-2614
DOI
https://doi.org/10.1007/s10877-022-00940-z

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