Driving pressure during general anesthesia for minimally invasive abdominal surgery (GENERATOR)-study protocol of a randomized clinical trial.

IF 2 4区医学 Q3 MEDICINE, RESEARCH & EXPERIMENTAL Trials Pub Date : 2024-10-26 DOI:10.1186/s13063-024-08479-x

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Abstract

Background: Intraoperative driving pressure (ΔP) has an independent association with the development of postoperative pulmonary complications (PPCs) in patients receiving ventilation during general anesthesia for major surgery. Ventilation with high intraoperative positive end-expiratory pressure (PEEP) with recruitment maneuvers (RMs) that result in a low ΔP has the potential to prevent PPCs. This trial tests the hypothesis that compared to standard low PEEP without RMs, an individualized high PEEP strategy, titrated to the lowest ΔP, with RMs prevents PPCs in patients receiving intraoperative protective ventilation during anesthesia for minimally invasive abdominal surgery.

Methods: "DrivinG prEssure duriNg gEneRal AnesThesia fOr minimally invasive abdominal suRgery (GENERATOR)" is an international, multicenter, two-group, patient and outcome-assessor blinded randomized clinical trial. In total, 1806 adult patients scheduled for minimally invasive abdominal surgery and with an increased risk of PPCs based on (i) the ARISCAT risk score for PPCs (≥ 26 points) and/or (ii) a combination of age > 40 years and scheduled surgery lasting > 2 h and planned to receive an intra-arterial catheter for blood pressure monitoring during the surgery will be included. Patients are assigned to either an intraoperative ventilation strategy with individualized high PEEP, titrated to the lowest ΔP, with RMs or one with a standard low PEEP of 5 cm H₂O without RMs. The primary outcome is a collapsed composite endpoint of PPCs until postoperative day 5.

Discussion: GENERATOR will be the first adequately powered randomized clinical trial to compare the effects of individualized high PEEP with RMs versus standard low PEEP without RMs on the occurrence of PPCs after minimally invasive abdominal surgery. The results of the GENERATOR trial will support anesthesiologists in their decisions regarding PEEP settings during minimally invasive abdominal surgery.

Trial registration: GENERATOR is registered at ClinicalTrials.gov (study identifier: NCT06101511) on 26 October 2023.

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腹部微创手术全身麻醉期间的驱动压力（GENERATOR）--随机临床试验的研究方案。

背景：术中驱动压力（ΔP）与接受全身麻醉通气的大手术患者术后肺部并发症（PPCs）的发生有独立联系。术中使用高呼气末正压（PEEP）和可导致低ΔP 的招募动作（RMs）进行通气有可能预防肺并发症。本试验验证了以下假设：与标准的低 PEEP（不带 RMs）相比，个体化的高 PEEP 策略（滴定到最低 ΔP）加上 RMs 可预防腹部微创手术麻醉期间接受术中保护性通气的患者发生 PPC："DrivinG prEssure duriNg gEneRal AnesThesia fOr minimally invasive abdominal suRgery (GENERATOR) "是一项国际多中心、两组、患者和结果评估者盲法随机临床试验。共有 1806 名计划接受腹部微创手术的成年患者将被纳入该试验，这些患者均具有以下特征：(i) PPCs 的 ARISCAT 风险评分（≥ 26 分）和/或 (ii) 年龄大于 40 岁，计划手术时间大于 2 小时，且计划在手术期间接受动脉内导管进行血压监测。患者将被分配至两种术中通气策略，一种是采用个体化高 PEEP（调节至最低 ΔP），并使用 RMs；另一种是采用 5 cm H2O 的标准低 PEEP，但不使用 RMs。主要结果是术后第 5 天前的 PPCs 折叠复合终点：讨论：GENERATOR 将是第一项有充分证据支持的随机临床试验，用于比较带 RM 的个性化高 PEEP 与不带 RM 的标准低 PEEP 对腹部微创手术后 PPCs 发生率的影响。GENERATOR 试验的结果将为麻醉医师在腹部微创手术中决定 PEEP 设置提供支持：GENERATOR已于2023年10月26日在ClinicalTrials.gov上注册（研究标识符：NCT06101511）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Trials 医学-医学：研究与实验

CiteScore

3.80

自引率

4.00%

发文量

966

审稿时长

6 months

期刊介绍： Trials is an open access, peer-reviewed, online journal that will encompass all aspects of the performance and findings of randomized controlled trials. Trials will experiment with, and then refine, innovative approaches to improving communication about trials. We are keen to move beyond publishing traditional trial results articles (although these will be included). We believe this represents an exciting opportunity to advance the science and reporting of trials. Prior to 2006, Trials was published as Current Controlled Trials in Cardiovascular Medicine (CCTCVM). All published CCTCVM articles are available via the Trials website and citations to CCTCVM article URLs will continue to be supported.