PMID: 2096174Nov 1, 1990Paper

Interpretation and clinical significance of the QRS axis of the electrocardiogram

The Journal of Emergency Medicine
J M StephenR Barish

Abstract

The frontal plane QRS axis of the standard 12-lead electrocardiogram (ECG) is easily and accurately measured by the clinician. A simple method of estimating this axis is discussed. This axis is age-dependent. We reviewed the literature to determine if evidence exists of an association between an "abnormal" QRS axis and clinically significant myocardial disease. We also examined the literature for clinical correlation of a "normal" QRS axis with the absence of myocardial pathology. We found that although an abnormal QRS axis (falling outside the limits of +30 degrees and +90 degrees) occurs in a small number of normal individuals, its presence should prompt a thorough evaluation of all the parameters of the ECG to look for myocardial disease.

References

Sep 15, 1989·Annals of Internal Medicine·H C SoxB Littenberg
Jul 1, 1987·The American Journal of Cardiology·Y NakayaH Mori
Jan 1, 1986·Japanese Heart Journal·Y TakayamaJ Fujii

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Citations

Jan 20, 2010·JACC. Cardiovascular Imaging·Nina HakacovaSalim F Idriss
Nov 26, 2013·Pediatric Clinics of North America·Harinder R Singh

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