The relationship between the timing of atrial systole and the useful work of the left ventricle in man.
D001783:Blood Flow Velocity; D001795:Blood Pressure Determination; D001811:Blood Volume Determination; D006328:Cardiac Catheterization; D006327:Heart Block / Q000503:physiopathology*; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans; D010138:Pacemaker, Artificial