LONDON – The positive findings of the Biomarkers in Acute Cardiovascular Care (BACC) study reinforce a key change contained in the brand-new European Society of Cardiology guidelines for management of patients with acute coronary syndrome without ST-segment elevation: namely, that it’s appropriate to assess such patients using two measurements of a validated high-sensitivity cardiac troponin assay taken just 1 hour apart, according to Dr. Kurt Huber.
The BACC results are the evidence-based icing on the cake in support of the new recommendation in the guidelines, released at the annual congress of the European Society of Cardiology. The BACC study, which included 1,045 patients who presented to a university emergency department with acute chest pain suggestive of an acute coronary syndrome without ST-segment elevation, was the latest of several studies to show that most such patients can either be safely sent home from the ED or ruled-in for acute MI in just 1 hour when evaluated using a high-sensitivity troponin assay backed by a validated patient-management algorithm. The result means reduced pressure on overcrowded EDs and less patient anxiety because of delayed diagnosis, Dr. Huber, director of cardiology and emergency medicine at Wilhelminen Hospital in Vienna, observed during an interview at the meeting.
The BACC study, presented by Dr. Dirk Westermann of the University Heart Center Hamburg (Germany), utilized a high-sensitivity cardiac troponin I assay. The 1-hour algorithm had a 99.7% negative predictive value for acute MI. A total of 53% of patients were ruled out or in for MI at the 1-hour mark; the rest required further evaluation.