观察点超声测量评估健康志愿者血液动力学参数的内部和内部变异性。

IF 3.4 Q2 Medicine
Deborah Blanca, Esther C Schwarz, Tycho Joan Olgers, Ewoud Ter Avest, Nasim Azizi, Hjalmar R Bouma, Jan Cornelis Ter Maaten
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引用次数: 1

摘要

背景:即时超声(POCUS)是评估急性患者血流动力学状态的一种有价值的工具。尽管POCUS通常采用定性方法,但定量测量在评估血流动力学状态方面具有潜在的优势。几个定量超声参数可用于评估血流动力学状态和心功能。然而,只有有限的数据的可行性和可靠性的定量血流动力学测量在护理点设置是可用的。本研究探讨了PoCUS测量健康志愿者定量血流动力学参数的观察者内部和观察者之间的变异性。方法:在这项前瞻性观察研究中,三名超声医师对健康受试者进行了八种不同血液动力学参数的三次重复测量。由两名经验丰富的超声波技师组成的专家小组对图像质量进行了评估。通过计算每个观察者的单独测量值之间的变异系数(CV)来确定重复性(观察者内部变异)。通过确定类内相关系数(ICC)来评估再现性(观察者间变异)。结果:本研究共纳入32名受试者,共获得1502张图像进行分析。各项指标均在正常生理范围内。卒中容量(SV)、心输出量(CO)和下腔静脉直径(IVC-D)具有高重复性(CV < 10%)和高重复性(ICC 0.61-0.80)。其他参数的重复性和再现性均为中等。结论:我们证明了急诊医生在健康受试者中测量CO、SV和IVC-D的良好的观察者间重复性和良好的观察者内重复性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Intra-and inter-observer variability of point of care ultrasound measurements to evaluate hemodynamic parameters in healthy volunteers.

Intra-and inter-observer variability of point of care ultrasound measurements to evaluate hemodynamic parameters in healthy volunteers.

Background: Point-of-care ultrasound (POCUS) is a valuable tool for assessing the hemodynamic status of acute patients. Even though POCUS often uses a qualitative approach, quantitative measurements have potential advantages in evaluating hemodynamic status. Several quantitative ultrasound parameters can be used to assess the hemodynamic status and cardiac function. However, only limited data on the feasibility and reliability of the quantitative hemodynamic measurements in the point-of-care setting are available. This study investigated the intra- and inter-observer variability of PoCUS measurements of quantitative hemodynamic parameters in healthy volunteers.

Methods: In this prospective observational study, three sonographers performed three repeated measurements of eight different hemodynamic parameters in healthy subjects. An expert panel of two experienced sonographers evaluated the images' quality. The repeatability (intra-observer variability) was determined by calculating the coefficient of variation (CV) between the separate measurements for each observer. The reproducibility (inter-observer variability) was assessed by determining the intra-class correlation coefficient (ICC).

Results: 32 subjects were included in this study, on whom, in total, 1502 images were obtained for analysis. All parameters were in a normal physiological range. Stroke volume (SV), cardiac output (CO), and inferior vena cava diameter (IVC-D) showed high repeatability (CV under 10%) and substantial reproducibility (ICC 0.61-0.80). The other parameters had only moderate repeatability and reproducibility.

Conclusions: We demonstrated good inter-observer reproducibility and good intra-observer repeatability for CO, SV and IVC-D taken in healthy subjects by emergency care physicians.

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来源期刊
Ultrasound Journal
Ultrasound Journal Health Professions-Radiological and Ultrasound Technology
CiteScore
6.80
自引率
2.90%
发文量
45
审稿时长
22 weeks
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