Contraction and blood flow patterns in the left ventricle during abnormal electrical activation

Frits W. Prinzen, Theo Arts, Elliot R. McVeigh, William C. Hunter, Robert S. Reneman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigated regional blood flow and contraction patterns during abnormal, asynchronous electrical activation of the left ventricle (LV), as induced by ventricular pacing in anesthetized open-chest dogs. 2D deformation of the anterior left ventricular (LV) epicardium was determined with optical markers and, in other experiments, 3D deformation of the entire LV wall using tagged Magnetic Resonance Imaging (MRI). Regional blood flow was determined with radioactive microspheres. Ventricular pacing caused characteristic patterns of systolic fiber shortening, being essentially zero in early and more than doubled in late activated regions. Myocardial blood flow was also (approximately 20%) lower in early and (approximately 35%) higher in late activated regions, as compared to normal activation. It is concluded that during asynchronous activation regional differences in contraction pattern cause differences in oxygen demand which, through autoregulation, lead to differences in blood flow.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Pages1336-1337
Number of pages2
Volume3
StatePublished - 1996
Externally publishedYes
EventProceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5) - Amsterdam, Neth
Duration: Oct 31 1996Nov 3 1996

Other

OtherProceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5)
CityAmsterdam, Neth
Period10/31/9611/3/96

Fingerprint

Flow patterns
Blood
Chemical activation
Microspheres
Fibers
Experiments

ASJC Scopus subject areas

  • Bioengineering

Cite this

Prinzen, F. W., Arts, T., McVeigh, E. R., Hunter, W. C., & Reneman, R. S. (1996). Contraction and blood flow patterns in the left ventricle during abnormal electrical activation. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 3, pp. 1336-1337). IEEE.

Contraction and blood flow patterns in the left ventricle during abnormal electrical activation. / Prinzen, Frits W.; Arts, Theo; McVeigh, Elliot R.; Hunter, William C.; Reneman, Robert S.

Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 3 IEEE, 1996. p. 1336-1337.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Prinzen, FW, Arts, T, McVeigh, ER, Hunter, WC & Reneman, RS 1996, Contraction and blood flow patterns in the left ventricle during abnormal electrical activation. in Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. vol. 3, IEEE, pp. 1336-1337, Proceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5), Amsterdam, Neth, 10/31/96.
Prinzen FW, Arts T, McVeigh ER, Hunter WC, Reneman RS. Contraction and blood flow patterns in the left ventricle during abnormal electrical activation. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 3. IEEE. 1996. p. 1336-1337
Prinzen, Frits W. ; Arts, Theo ; McVeigh, Elliot R. ; Hunter, William C. ; Reneman, Robert S. / Contraction and blood flow patterns in the left ventricle during abnormal electrical activation. Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings. Vol. 3 IEEE, 1996. pp. 1336-1337
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