Practice in endoscopic cholangiopancreatography in Denmark differs from that in Britain

EDITOR,—Jacob Rosenberg and colleagues' conclusion that premedication with metoprolol prevents myocardial ischaemia during endoscopic cholangiopancreatography has important implications for routine technique in this procedure.1 The applicability of this finding to current clinical practice in Britain, however, is unclear since there are considerable differences between the British Society of Gastroenterology's …