title: Do no harm.
authors.forename: R J
authors.initials: RJ
authors.lastname: Barst
mesh_terms: D002121:Calcium Channel Blockers / Q000009:adverse effects*; D000075202:Contraindications; D004452:Echocardiography; D006346:Heart Septum / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006352:Heart Ventricles / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy* / Q000503:physiopathology; D007022:Hypotension / Q000139:chemically induced* / Q000503:physiopathology; D009543:Nifedipine / Q000009:adverse effects*; D014694:Ventricular Outflow Obstruction / Q000000981:diagnostic imaging / Q000503:physiopathology
chemical_list: D002121:Calcium Channel Blockers; D009543:Nifedipine