title: Spontaneous ventricular flutter and fibrillation during quinidine medication.
mesh_terms: D001145:Arrhythmias, Cardiac / Q000139:chemically induced*; D004562:Electrocardiography; D005260:Female; D006352:Heart Ventricles; D006801:Humans; D008875:Middle Aged; D011802:Quinidine / Q000009:adverse effects*; D013575:Syncope / Q000139:chemically induced; D014693:Ventricular Fibrillation / Q000139:chemically induced*
chemical_list: D011802:Quinidine