Abstract
Infective endocarditis (IE) is associated with significant morbidity and mortality, and successful management requires expertise in both cardiac surgery and infectious disease (ID). However, the impact of ID consultation on the clinical outcomes of IE is not clear. The present study was a quasi-experimental, interrupted time series analysis of the clinical outcomes of patients with IE before (April 1998-April 2008) and after (May 2008-March 2019) the establishment of an ID department at a tertiary care hospital in Japan. The primary outcome was clinical failure within 90 days, defined as a composite of all-cause mortality, unplanned cardiac operation, new-onset embolic events, and relapse of bacteremia caused by the original pathogen. Of 238 IE patients, 59 (25%) were treated in the preintervention period, and 179 (75%) were treated in the postintervention period. Establishment of an ID department was associated with a 54% reduction in clinical failure (relative risk, 0.46; 95% confidence interval, 0.21-1.02; P= .054) and a 79% reduction in new-onset embolic events (relative risk, 0.21; 95% confidence interval, 0.07-0.71; P= .01). In addition, the rate of inappropriate IE management significantly decreased (relative risk, 0.06; 95% confidence interval, 0.02-0.22; P < .01). Establishment of an ID department at a tertiary care hospital was associated with improved management, better clinical outcomes, and reduced embolic events in patients with IE admitted to the hospital.
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