title: Right ventricular monophasic action potentials in patients with long QT syndrome.
abstract: In 3 patients with the long QT syndrome, one caused by quinidine and 2 of congenital origin, right ventricular monophasic action potentials were excessively prolonged and of varying shapes in different recording sites. In addition, effective refractory periods of the ventricular muscle were abnormally long.
mesh_terms: D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000139:chemically induced / Q000151:congenital / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D011802:Quinidine / Q000009:adverse effects; D013575:Syncope / Q000503:physiopathology; D013577:Syndrome
chemical_list: D011802:Quinidine