1 during total cardiopulmonary bypass , acetylcholine- , isoprenaline- , ouabain- and quinidine-induced variations in the atrial and ventricular rates of fibrillation were studied and compared with the variations in effective refractory periods ( erp ) of atrial and ventricular contractile tissue obtained under the same experimental conditions .
C0022245
isoprenaline
C0042510
ventricular