201 (one myocardial infarction; one atrial fibrillation). At four hours postadmission, 14 more patients tested positive (13 myocardial infarction and one angina). At 12 hours postadmission, a further seven patients tested positive (five myocardial in-farction and two angina). Of the 19 patients diagnosed as myocardial in-farction, a positive troponin T was only present in one patient on admissi...