The vector U loop of ventricular premature beats.
D001145:Arrhythmias, Cardiac / Q000503:physiopathology*; D003330:Coronary Vessel Anomalies / Q000503:physiopathology; D006321:Heart / Q000503:physiopathology*; D006331:Heart Diseases / Q000503:physiopathology*; D006349:Heart Valve Diseases / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D006973:Hypertension / Q000503:physiopathology; D009203:Myocardial Infarction / Q000503:physiopathology; D013610:Tachycardia / Q000503:physiopathology; D014672:Vectorcardiography