Effect of optimal operator positioning on transcranial Doppler acquisition: a randomized controlled trial.

IF 3.6 2区医学 Q1 EMERGENCY MEDICINE

Scandinavian Journal of Trauma Resuscitation & Emergency Medicine Pub Date : 2026-05-21 DOI:10.1186/s13049-026-01619-z

Théophile Vieux, Tatiana Randriamandimby, Roger Kadji Kalabang, Jérôme Bokobza, Rémi Girerd, Tomislav Petrovic, Frédéric Lapostolle

{"title":"Effect of optimal operator positioning on transcranial Doppler acquisition: a randomized controlled trial.","authors":"Théophile Vieux, Tatiana Randriamandimby, Roger Kadji Kalabang, Jérôme Bokobza, Rémi Girerd, Tomislav Petrovic, Frédéric Lapostolle","doi":"10.1186/s13049-026-01619-z","DOIUrl":null,"url":null,"abstract":"Background: Ergonomic conditions during ultrasound procedures may influence both acquisition time and image quality. In transcranial Doppler, positioning at the patient's head could improve operator comfort and performance. This study aimed to evaluate whether a standardized seated position at the patient's head enables faster acquisition of interpretable images and could improve image quality.Methods: We conducted a multicenter randomized controlled trial between August and December 2024 including emergency medicine residents without prior training in transcranial Doppler. Participants were randomized to either a free positioning group or a standardized seated position at the patient's head. Each participant performed bilateral acquisitions of the middle cerebral artery. Acquisition time was recorded, and image quality was assessed blindly by an expert panel using a semi-quantitative scale.Results: Forty-four residents were included, yielding 88 measurements (46 in the intervention group and 42 in the control group). Baseline characteristics were similar except for a higher number of validated semesters in the intervention group. Mean acquisition time was shorter in the intervention group (99.4 ± 47.1 s) than in the control group (121.7 ± 52.9 s), with a mean difference of 22.3 s (95% CI 1.2-43.3; p = 0.038). Image quality scores did not differ significantly between groups (16.6 ± 5.0 vs. 18.0 ± 5.0; mean difference - 1.4, 95% CI -3.5-0.7; p = 0.20).Conclusions: Standardized operator positioning at the patient's head was associated with faster acquisition of transcranial Doppler images, without a significant difference in image quality.","PeriodicalId":49292,"journal":{"name":"Scandinavian Journal of Trauma Resuscitation & Emergency Medicine","volume":" ","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13371448/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scandinavian Journal of Trauma Resuscitation & Emergency Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1186/s13049-026-01619-z","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"EMERGENCY MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

Background: Ergonomic conditions during ultrasound procedures may influence both acquisition time and image quality. In transcranial Doppler, positioning at the patient's head could improve operator comfort and performance. This study aimed to evaluate whether a standardized seated position at the patient's head enables faster acquisition of interpretable images and could improve image quality.

Methods: We conducted a multicenter randomized controlled trial between August and December 2024 including emergency medicine residents without prior training in transcranial Doppler. Participants were randomized to either a free positioning group or a standardized seated position at the patient's head. Each participant performed bilateral acquisitions of the middle cerebral artery. Acquisition time was recorded, and image quality was assessed blindly by an expert panel using a semi-quantitative scale.

Results: Forty-four residents were included, yielding 88 measurements (46 in the intervention group and 42 in the control group). Baseline characteristics were similar except for a higher number of validated semesters in the intervention group. Mean acquisition time was shorter in the intervention group (99.4 ± 47.1 s) than in the control group (121.7 ± 52.9 s), with a mean difference of 22.3 s (95% CI 1.2-43.3; p = 0.038). Image quality scores did not differ significantly between groups (16.6 ± 5.0 vs. 18.0 ± 5.0; mean difference - 1.4, 95% CI -3.5-0.7; p = 0.20).

Conclusions: Standardized operator positioning at the patient's head was associated with faster acquisition of transcranial Doppler images, without a significant difference in image quality.

查看原文本刊更多论文

最佳操作人员定位对经颅多普勒采集的影响：一项随机对照试验。

背景：超声过程中的人体工程学条件可能会影响采集时间和图像质量。在经颅多普勒手术中，定位于患者头部可以改善操作人员的舒适度和工作表现。本研究旨在评估患者头部的标准化坐姿是否能够更快地获取可解释图像并提高图像质量。方法：我们于2024年8月至12月进行了一项多中心随机对照试验，纳入了未经事先经颅多普勒培训的急诊医学住院医师。参与者被随机分为自由坐姿组或患者头部标准化坐姿组。每个参与者都进行了双侧大脑中动脉的采集。记录采集时间，由专家小组采用半定量量表对图像质量进行盲目评估。结果：纳入44名居民，测量88次（干预组46次，对照组42次）。基线特征相似，除了干预组的有效学期数更多。干预组的平均获取时间（99.4±47.1 s）短于对照组（121.7±52.9 s），平均差异为22.3 s （95% CI 1.2 ~ 43.3; p = 0.038）。图像质量评分组间无显著差异（16.6±5.0 vs. 18.0±5.0；平均差- 1.4,95% CI -3.5-0.7; p = 0.20）。结论：标准化操作人员在患者头部的定位与更快地获取经颅多普勒图像相关，且图像质量无显著差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Scandinavian Journal of Trauma Resuscitation & Emergency Medicine EMERGENCY MEDICINE-

CiteScore

6.10

自引率

6.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The primary topics of interest in Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine (SJTREM) are the pre-hospital and early in-hospital diagnostic and therapeutic aspects of emergency medicine, trauma, and resuscitation. Contributions focusing on dispatch, major incidents, etiology, pathophysiology, rehabilitation, epidemiology, prevention, education, training, implementation, work environment, as well as ethical and socio-economic aspects may also be assessed for publication.