Are Subcostal, Transhepatic, and Coronal Windows Interchangeable for IVC Ultrasonography? A Multicenter Prospective Agreement Study
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 900
- 主要终点
- The intermethod agreement of IVC diameter and collapsibility index measurements
研究概览
简要总结
Ultrasonographic evaluation of the inferior vena cava (IVC) is widely used in emergency and critical care settings for noninvasive assessment of intravascular volume status. The subcostal (SC) window is the standard approach; however, it is frequently limited by obesity, bowel distension, or postoperative anatomical changes. In such cases, the right coronal (RC) and anterior transhepatic (aTH) windows have been proposed as alternatives.
详细描述
The existing literature presents conflicting results regarding the interchangeability of these windows. Several studies report significant discrepancies between SC and RC measurements, while others demonstrate strong agreement. Direct comparison of the SC and aTH windows has received considerably less attention, with only a single prospective study to date reporting reliable agreement between these approaches under standardized imaging criteria.
Methodological heterogeneity, most likely arising from an unstandardized imaging technique, underlies much of the observed discordance. As a result, clinicians lack clear guidance on whether alternative windows can reliably substitute for the SC approach across diverse clinical settings.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients (≥18 years) requiring ultrasonographic assessment of intravascular volume status will be consecutively enrolled.
排除标准
- •Pregnancy, refusal to participate, and inability to obtain any IVC image via the SC approach.
结局指标
主要结局
The intermethod agreement of IVC diameter and collapsibility index measurements
时间窗: 90 days
The intermethod agreement of IVC diameter and collapsibility index measurements obtained from the subcostal (SC), anterior transhepatic (aTH), and right coronal (RC) ultrasonographic windows under a standardized imaging protocol, and to determine whether aTH and RC windows can serve as reliable alternatives to the SC approach across diverse clinical settings and operator profiles.
次要结局
未报告次要终点
研究者
Mehmet Ali Aslaner
Prof. Dr.
Gazi University