title: Letter: Catheter perforations of heart wall.
mesh_terms: D006328:Cardiac Catheterization / Q000009:adverse effects*; D002305:Cardiac Tamponade / Q000175:diagnosis / Q000209:etiology; D006335:Heart Injuries / Q000209:etiology*; D006352:Heart Ventricles / Q000293:injuries; D006801:Humans