Day Kevin, Oliva Isabel, Krupinski Elizabeth, Marcus Frank
Department of Medical Imaging, University of Arizona Medical Center, 1501N. Campbell Ave. PO Box 245067, Tucson, AZ.
Department of Medical Imaging, University of Arizona Medical Center, 1501N. Campbell Ave. PO Box 245067, Tucson, AZ.
J Electrocardiol. 2015 Nov-Dec;48(6):1058-61. doi: 10.1016/j.jelectrocard.2015.08.019. Epub 2015 Aug 5.
Precordial ECG lead placement is difficult in obese patients with increased chest wall soft tissues due to inaccurate palpation of the intercostal spaces. We investigated whether the length of the sternum (distance between the sternal notch and xiphoid process) can accurately predict the location of the 4th intercostal space, which is the traditional location for V1 lead position.
Fifty-five consecutive adult chest computed tomography examinations were reviewed for measurements.
The sternal notch to right 4th intercostal space distance was 67% of the sternal notch to xiphoid process length with an overall correlation of r=0.600 (p<0.001).
The above measurement may be utilized to locate the 4th intercostal space for accurate placement of the precordial electrodes in adults in whom the 4th intercostal space cannot be found by physical exam.
由于肥胖患者胸壁软组织增加，肋间空间触诊不准确，心前区心电图导联放置困难。我们研究了胸骨长度（胸骨切迹与剑突之间的距离）是否能准确预测第4肋间空间的位置，而第4肋间空间是V1导联位置的传统放置部位。
回顾了连续55例成人胸部计算机断层扫描检查结果以进行测量。
胸骨切迹至右侧第4肋间空间的距离为胸骨切迹至剑突长度的67%，总体相关性r = 0.600（p < 0.001）。
上述测量方法可用于定位第4肋间空间，以便在体格检查无法找到第4肋间空间的成人中准确放置心前区电极。
