Effect of Dexmedetomidine on Intraoperative Hemodynamics and Blood Loss in Patients Undergoing Spine Surgery: A Systematic Review and Meta-Analysis

Mei Wang; Jian-Xiang Che; Lei Chen; Ting-Ting Song; Jin-Tao Qu

doi:10.24920/004294

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Effect of Dexmedetomidine on Intraoperative Hemodynamics and Blood Loss in Patients Undergoing Spine Surgery: A Systematic Review and Meta-Analysis

Chinese Medical Sciences Journal Vol. 39, Issue 1, Pages: 54-68(2024)

Research Article | Updated：2024-05-27

- Effect of Dexmedetomidine on Intraoperative Hemodynamics and Blood Loss in Patients Undergoing Spine Surgery: A Systematic Review and Meta-Analysis
- Affiliations：
  
  1. 1Department of Anesthesiology, The 925th Hospital of People's Liberation Army (PLA) Joint Logistics Support Force, Guiyang, Guizhou 550000, China
  2. 2Department of Orthopedics, The 925th Hospital of People's Liberation Army (PLA) Joint Logistics Support Force, Guiyang, Guizhou 550000, China
- Author bio：
- Funds：
- DOI：10.24920/004294
  CLC：
- Received：23 August 2023，
  
  Accepted：2024-01-22，
  
  Published Online：29 February 2024，
  
  Published：31 March 2024
- Accepted：
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Mei Wang, Jian-Xiang Che, Lei Chen, et al. Effect of Dexmedetomidine on Intraoperative Hemodynamics and Blood Loss in Patients Undergoing Spine Surgery: A Systematic Review and Meta-Analysis[J]. Chinese medical sciences journal, 2024, 39(1): 54-68.
DOI：

Mei Wang, Jian-Xiang Che, Lei Chen, et al. Effect of Dexmedetomidine on Intraoperative Hemodynamics and Blood Loss in Patients Undergoing Spine Surgery: A Systematic Review and Meta-Analysis[J]. Chinese medical sciences journal, 2024, 39(1): 54-68. DOI： 10.24920/004294.

摘要

目的

右美托咪定是一种高选择性的α2肾上腺素能受体激动剂，具有降低血压和心率的作用。本研究旨在探讨右美托咪定对脊柱手术患者术中血流动力学和失血量的影响。

方法

检索Web of Science、MEDLINE、EMBASE和Cochrane图书馆截至2023年2月发表的随机对照研究，比较右美托咪定和生理盐水对脊柱手术术中血流动力学和失血量的影响。根据研究间的异质性采用固定或随机效应模型。

结果

纳入21项随机对照研究，共1388例患者。右美托咪定的使用增加了术中低血压（

：2.11；95%

：1.24 - 3.58；

0.006）和心动过缓（

：2.48；95%

：1.57 - 3.93；

0.0001）的总体风险。特别是在给予负荷剂量时，低血压（

：2.00；95%

：1.06 - 3.79；

0.03）和心动过缓（

：2.28；95%

：1.42 - 3.66；

0.0007）的风险更为显著。当右美托咪定与静脉麻醉联合使用时，患者更容易出现血流动力学不稳定的情况，包括低血压（

：2.90；95%

：1.24 - 6.82；

0.01）和心动过缓（

：2.66；95%

：1.53 - 4.61；

0.0005）。与吸入麻醉联合时，仅增加了心动过缓的风险（

：4.95；95%

：1.41 - 17.37；

0.01）。然而，当与静吸复合麻醉联合使用时，并未增加低血压和心动过缓的风险。此外，右美托咪定还增加了重度低血压的风险（

：2.57；95%

：1.05 - 6.32；

0.04），但对轻度低血压的影响并不显著。对于心动过缓而言，无论是轻度（

：2.55；95%

：1.06-6.15；

0.04）还是重度（

：2.45；95%

：1.43 - 4.20；

0.001）的风险都有所增加。总体而言，右美托咪定对术中失血量的影响并不显著，但在与吸入麻醉联合时，失血量显著减少（MD：-82.97；95%

：-109.04 - -56.90；

0.001）。

结论

右美托咪定在脊柱手术过程中增加了低血压和心动过缓的风险。给予负荷剂量或与不同麻醉维持方式联合使用可能会对术中血流动力学和失血量产生不同的影响。然而，目前的研究结果仍需进一步证实和探讨。

Abstract

Objective

Dexmedetomidine (Dex) is a highly selective α2 adrenoceptor agonist that reduces blood pressure and heart rate. However

its ability to provide stable hemodynamics and a clinically significant reduction in blood loss in spine surge

ry is still a matter of debate. This study aimed to investigate the effects of Dex on intraoperative hemodynamics and blood loss in patients undergoing spine surgery.

Methods

The Web of Science

MEDLINE

EMBASE

and the Cochrane Library were searched up to February 2023 for randomized controlled trials (RCTs) including patients undergoing spine surgeries under general anaesthesia and comparing Dex and saline. A fixed- or random-effect model was used depending on heterogeneity.

Results

Twenty-one RCTs

including 1388 patients

were identified. Dex added the overall risk of intraoperative hypotension (odds ratio [OR

]

: 2.11; 95% confidence interval [

]

: 1.24 — 3.58;

=0.006) and bradycardia (OR: 2.48; 95%

: 1.57 — 3.93;

=0.0001). The use of a loading dose of Dex led to significantly increased risks of intraoperative hypotension (OR: 2.00; 95%

: 1.06 — 3.79;

=0.03) and bradycardia (OR: 2.28; 95%

: 1.42 - 3.66;

=0.0007). For patients receiving total intravenous anesthesia

there was an increased risk of hypotension (OR: 2.90; 95%

: 1.24 — 6.82;

=0.01) and bradycardia (OR: 2.66; 95%

: 1.53 — 4.61;

=0. 0005). For patients in the inhalation anesthesia group

only an increased risk of bradycardia (OR: 4.95; 95%

: 1.41 — 17.37;

=0.01) was observed. No significant increase in the risk of hypotension and bradycardia was found in the combined intravenous-inhalation anesthesia group. The incidence of severe hypotension (OR: 2.57; 95%

: 1.05 — 6.32;

=0.04)

but not mild hypotension

was increased. Both mild (OR: 2.55; 95%

: 1.06 — 6.15;

=0.04) and severe (OR: 2.45; 95%

: 1.43 — 4.20;

=0.001) bradycardia were associ

ated with a higher risk. The overall analyses did not reveal significant reduction in intraoperative blood loss. However

a significant decrease in blood loss was observed in total inhalation anesthesia subgroup (mean difference [MD

]

: -82.97; 95%

: -109.04 — -56.90;

0.001).

Conclusions

Dex increases the risks of intraoperative hypotension and bradycardia in major spine surgery. The administration of a loading dose of Dex and the utilization of various anesthesia maintenance methods may potentially impact hemodynamic stability and intraoperative blood loss.

关键词

Keywords

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Effect of Dexmedetomidine on Maintaining Perioperative Hemodynamic Stability in Elderly Patients: A Systematic Review and Meta-analysis

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