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(Chest. 1967;52:543-546.)
© 1967 American College of Chest Physicians

QRS Voltage Changes for Posterior Unipolar Chest Leads in Patients with Left Ventricular Hypertrophy

Herman L. Falsetti M.D.1

1 Research Instructor in Cardiology, Buffalo General Hospital

1. The posterior chest leads (V7, V8 and V9) of 20 patients with LVH were measured to determine the nature of the effects of left ventricular hypertrophy on the posterior chest leads.

2. The Q and S waves were not affected by LVH.

3. The R wave in V7, V8 and V9 was increased in 11 patients.

4. An R wave greater than 11.6mm in V7, greater than 9.7mm in V8 or greater than 7.7mm in V9, constitutes strong evidence that a patient does have LVH.






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Copyright © 1967 by the American College of Chest Physicians.