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(Circulation. 1958;18:410.)
© 1958 American Heart Association, Inc.

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The Deep S Wave in Leads V₁, V₂, and V₃ in Right Ventricular Hypertrophy

HERBERT SHUBIN M.D.¹ DAVID C. LEVINSON M.D.¹

¹ From the Cardio-Respiratory Laboratory, Cedars of Lebanon Hospital, Los Angeles, Calif.

Six patients with mitral stenosis, 3 with pulmonic stenosis, and 1 with pulmonary hypertension are presented. All had isolated right ventricular hypertrophy and all had deep S waves in V₁, V₂, or V₃. In 3 cases the voltage of R in V₁ was less than 0.5 millivolt. In 3 cases R/S ratios in V₁ of less than 1.0 were present. Vectorcardiograms showed characteristic features and illustrated the reasons for the electrocardiographic findings.