Evaluation of the Consistency of the ASIS Line for Lumbar Level Identification in the Lateral Decubitus Position: Comparison With the Tuffier's Line
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 140
- 试验地点
- 2
- 主要终点
- Consistency of Vertebral Level Identification (Standard Deviation)
研究概览
简要总结
Tuffier's line is commonly used as a landmark for estimating lumbar vertebral levels during spinal anesthesia. However, its accuracy can vary depending on factors such as age, sex, BMI, and posture. This study evaluates the consistency of an alternative landmark, the "ASIS line" (a line connecting both Anterior Superior Iliac Spines), for identifying lumbar levels in the lateral decubitus position. Researchers will mark both the ASIS line and Tuffier's line on participants and use ultrasound to verify the exact vertebral level where each line crosses the spine. The goal is to determine if the ASIS line provides a more consistent and reliable estimation of lumbar levels compared to Tuffier's line.
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 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adults aged 18 to 85 years
- •Patients scheduled for spinal anesthesia or lumbar ultrasound
- •Participants who voluntarily agreed to participate and provided written informed consent
排除标准
- •History of spinal surgery or spinal deformity
- •Infection or wounds at the puncture site
- •Inability to maintain the lateral decubitus position
- •Congenital lumbosacral transitional vertebrae (e.g., sacralized L5 or lumbarized S1)
- •Any other condition deemed unsuitable for the study by the investigator
研究组 & 干预措施
Study Cohort
Adult patients (aged 18-85) scheduled for spinal anesthesia or lumbar ultrasound
干预措施: Lumbar Ultrasound & Palpation (Diagnostic Test)
结局指标
主要结局
Consistency of Vertebral Level Identification (Standard Deviation)
时间窗: Day 1 (Immediately during the ultrasound examination)
The specific vertebral level where the ASIS line and Tuffier's line intersect the spine will be identified using ultrasound. The lumbar spine (from L2 upper to S1 upper) is divided into segments (e.g., L2=2, L3=3, L4=4, L5=5, S1=6). The consistency of each method is evaluated by calculating and comparing the standard deviation (SD) of the identified vertebral levels.
次要结局
- Difference in Mean Intersection Level(Day 1)
- Rate of Identification within L4-L5 Interspace(Day 1)
研究者
Sung Hyun Lee
Associate Professor
Kangbuk Samsung Hospital