A prolonged QRS duration on surface electrocardiogram is a specific indicator of left ventricular dysfunction
Rachel L. Murkofsky, MDa,
George Dangas, MDa,
Joseph A. Diamond, MDa,
Davendra Mehta, MD, PhD, FACCa,
Abraham Schaffer, MD*,a and
John A. Ambrose, MD, FACCa
a Zena & Michael A. Wiener Cardiovascular Institute, and the Department of Medicine, Mount Sinai School of Medicine, New York, New York, USA
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Figure 1 Correlation between manual and computerized QRS measurements (r = 0.95, p < 0.0001).
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Figure 2 Twelve-lead ECG with a QRS duration of 0.080 s of a patient with an EF of 64%. B, Twelve-lead ECG with a QRS duration of 0.088 s of a patient with an EF of 36%. C, Twelve-lead ECG with a QRS duration of 0.116 s of a patient with an EF of 29%.
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