Identification of 4th intercostal space using sternal notch to xiphoid length for accurate electrocardiogram lead placement

Journal of Electrocardiology
Kevin DayFrank Marcus

Abstract

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.

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Citations

Oct 26, 2018·Advanced Science·Mehdi MehraliAlireza Dolatshahi-Pirouz

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