In vivo measurement of swine endocardial convective heat transfer coefficient

Chanchana Tangwongsan, James A. Will, John G. Webster*, Kenneth L. Meredith, David M. Mahvi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We measured the endocardial convective heat transfer coefficient h at 22 locations in the cardiac chambers of 15 pigs in vivo. A thin-film Pt catheter tip sensor in a Wheatstone-bridge circuit, similar to a hot wire/film anemometer, measured h. Using fluoroscopy, we could precisely locate the steerable catheter sensor tip and sensor orientation in pigs' cardiac chambers. With flows, h varies from 2500 to 9500 W/m2·K. With zero flow, h is approximately 2400 W/m2·K. These values of h can be used for the finite element method modeling of radiofrequency cardiac catheter ablation.

Original languageEnglish (US)
Pages (from-to)1478-1486
Number of pages9
JournalIEEE Transactions on Biomedical Engineering
Volume51
Issue number8
DOIs
StatePublished - Aug 2004

Keywords

  • Cardiac radiofrequency ablation
  • Convective heat transfer coefficient
  • Endocardial convective heat transfer coefficient
  • Heat convection
  • Radiofrequency ablation

ASJC Scopus subject areas

  • Biomedical Engineering

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