title: Adaptation of the left ventricle to sudden changes in heart rate in patients with artificial pacemakers.
mesh_terms: D000222:Adaptation, Physiological; D000368:Aged; D001013:Aorta, Thoracic; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D002306:Cardiac Volume; D002932:Cineangiography; D004562:Electrocardiography; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006327:Heart Block / Q000503:physiopathology / Q000628:therapy; D006339:Heart Rate; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial