Figure: ECG right atrial enlargement with left ventricular hypertrophy

Introduction

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69 yrs     Female     BP 135/55

PR:  172
QRS:  74      Sinus tachycardia @ 106/min.
QT:  321      Right axis deviation.
QTc: 426      Consider right atrial enlargement.  Biphasic p-wave > 0.20 mV in V1.
             Right ventricular hypertrophy.
 Axes              Large R in V1 & S in I & V6.
                   Right atrial enlargement.
P:    45            Right axis deviation.
QRS: 165
T:    11

Courtesy of Kerala Serio, M.D. UCSF Fresno.