What changes were made to the Duke criteria for the diagnosis of IE?
The changes made to the Duke criteria for the diagnosis of IE include the inclusion of additional parameters with the existing Duke minor criteria, which resulted in a 10% increase in the frequency of cases being deemed clinically definite; the elimination of one minor criterion from the original Duke schema, which was used in only 5% of cases and was never used in the final analysis of any patient who underwent transesophageal echocardiography; and the adjustment of the Duke criteria to require a minimum of 1 major plus 1 minor criterion or 3 minor criteria as a floor to designate a case as possible IE. 