Marcus Frank, Hughes Trina, Barrios Phillip, Borgstrom Mark
Division of Cardiology, Sarver Heart Center, The University of Arizona College of Medicine, Tucson, AZ.
Division of Cardiology, Sarver Heart Center, The University of Arizona College of Medicine, Tucson, AZ.
J Electrocardiol. 2018 Jan-Feb;51(1):55-59. doi: 10.1016/j.jelectrocard.2017.05.006. Epub 2017 May 18.
To verify accurate placement of the precordial ECG leads by identifying the 4th and 5th intercostal spaces as a function of the length of the sternum. This should decrease the percentage of lead misplacement leading to misdiagnoses.
The population consisted of patients and healthy volunteers. The proposed method compared palpation of the 4th and 5th intercostal spaces to a percentile of the sternal length. Location of the 4th and 5th intercostal space using a simple device was evaluated to assist in proper placement of the precordial leads to obtain accurate diagnosis.
The location of the 4th and 5th intercostal space is related to the length of the sternum. It is 77% of the sternal length that measures 15cm for the 4th intercostal space. The position of the V1 and V2 electrodes decreases to 57% when the sternal length is 26cm. Similar data was obtained to locate the 5th intercostal space with proper position of V4-V6 electrodes. Tables are provided to facilitate this process. An instrument was designed to measure the 4th and 5th intercostal space as a function of the sternal length.
The location of the 4th and 5th intercostal space is identified based on the length of the sternum.
通过将胸骨长度作为确定第四和第五肋间间隙的依据，来验证胸前心电图导联的准确放置。这应能降低导联放置错误导致误诊的百分比。
研究对象包括患者和健康志愿者。所提出的方法将第四和第五肋间间隙的触诊结果与胸骨长度的百分位数进行比较。使用一种简单装置评估第四和第五肋间间隙的位置，以协助正确放置胸前导联，从而获得准确诊断。
第四和第五肋间间隙的位置与胸骨长度相关。对于胸骨长度为15厘米的情况，第四肋间间隙位于胸骨长度的77%处。当胸骨长度为26厘米时，V1和V2电极的位置降至胸骨长度的57%。在确定第五肋间间隙以及V4 - V6电极的正确位置时，也获得了类似的数据。提供了表格以方便这一过程。设计了一种仪器来根据胸骨长度测量第四和第五肋间间隙。
根据胸骨长度确定第四和第五肋间间隙的位置。
