Echocardiographic risk stratification for early surgery with endocarditis: a cost-effectiveness analysis.

Published

Journal Article

BACKGROUND: Despite widespread acceptance of echocardiography for diagnosis of infective endocarditis, few investigators have evaluated its utility as a risk-stratification tool to aid therapeutic decision-making. METHODS: A decision tree and Markov analysis model were constructed using published and institutional data to estimate the cost-effectiveness of an echocardiographic risk-stratification strategy for infective endocarditis. The models compared surgery for high-risk patients based on clinical factors ("standard care") and surgery for high-risk patients based on echocardiographic findings ("echocardiography-guided"). RESULTS: The cost per patient for standard care and echocardiography-guided strategies was $47,766 and $53,669, respectively. The expected quality-adjusted life years (QALY) for standard care and echocardiography-guided strategies were 5.86 years and 6.10 years, respectively. Compared with standard care, the echocardiography-guided strategy cost an additional $23,867 per QALY saved. In one-way sensitivity analyses, the incremental cost of this strategy remained <$50,000/QALY across a broad range of scenarios. Baseline stroke risk had the greatest effect on cost-effectiveness. For populations with stroke risk less than 3.65%, the echocardiography-guided strategy was not cost-attractive (ICER >$50,000/QALY). At stroke risk between 3.65% and 14%, the ICER for the echocardiography-guided strategy was attractive (<$50,000 /QALY). The echocardiography-guided strategy became economically dominant at any baseline stroke risk greater than 18.3%. CONCLUSION: Echo-guided risk stratification for early surgery in patients with large vegetations is a cost-attractive treatment strategy for IE, as it improves outcome for an incremental cost <$50,000/QALY.

Full Text

Duke Authors

Cited Authors

  • Liao, L; Kong, DF; Samad, Z; Pappas, PA; Jollis, JG; Lin, SS; Wang, A; Fowler, VG; Chu, VH; Sexton, DJ; Corey, GR; Cabell, CH

Published Date

  • May 2008

Published In

Volume / Issue

  • 94 / 5

Start / End Page

  • e18 -

PubMed ID

  • 17575328

Pubmed Central ID

  • 17575328

Electronic International Standard Serial Number (EISSN)

  • 1468-201X

International Standard Serial Number (ISSN)

  • 1355-6037

Digital Object Identifier (DOI)

  • 10.1136/hrt.2006.106716

Language

  • eng