title: Sudden marked QT prolongation after intravenous administration of amiodarone.
mesh_terms: D000638:Amiodarone / Q000009:adverse effects*; D001572:Benzofurans / Q000009:adverse effects*; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008875:Middle Aged; D013997:Time Factors
chemical_list: D001572:Benzofurans; D000638:Amiodarone