Use of atrial pacing and exercise in studying ventricular function during angina.
D000787:Angina Pectoris / Q000503:physiopathology*; D004562:Electrocardiography; D005080:Exercise Test; D006325:Heart Atria; D006334:Heart Function Tests; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans