Tall R wave in ECG represents:: (A) Right atrial overload, (B) Left atrial overload, (C) Right ventricular hypertrophy, (D) All of the above
Answer is C. Right ventricular hypertrophy due to a sustained, severe pressure load (e.g. due to right pulmonary valve stenosis or certain pulmonary artery hypertension syndromes) is characterized by a relatively tall R wave in lead V, (R >S wave), usually with right axis deviation.