Cor pulmonale is a condition that affects the right ventricle in the heart, altering its structure and proper functioning. It is caused by a respiratory system disorder. Pulmonary hypertension is a ...

The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or ...

This ECG shows sinus tachycardia at a rate of about 115 beats per minute with tall peaked P waves in II-III-AVF (P-pulmonale). The frontal plane QRS axis is +120° (right axis deviation) and the R wave ...

The diagnosis is NSR, Mobitz type I second-degree atrioventricular (AV) block (Wenckebach), nonconducted (blocked) PACs, and early transition (counterclockwise rotation). The rhythm is irregular, but ...