title: Letter: Intravenous procaine amide and left ventricular performance.
mesh_terms: D000889:Anti-Arrhythmia Agents; D004341:Drug Evaluation; D006352:Heart Ventricles / Q000187:drug effects*; D006801:Humans; D009200:Myocardial Contraction / Q000187:drug effects*; D011342:Procainamide / Q000008:administration & dosage*
chemical_list: D000889:Anti-Arrhythmia Agents; D011342:Procainamide