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Proceedings Paper

Coronary blood flow during percutaneous hemopump in patients at high risk for angioplasty
Author(s): Herbert J. Geschwind; Jean Luc Dubois-Rande; Patrick J. Dupouy; Fabrice S. Larrazet; Jan Kvasnicka; Ahmed El-Ghalid; Philippe Deleuze; Daniel Loisance
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Paper Abstract

Hemopump is a ventricular assist device which is aimed at improving the management of high- risk patients for PTCA. The aim of the study was to access coronary blood flow velocity during hemopump. The hemopump was inserted percutaneously into the femoral artery. Coronary blood flow was measured with a 12 MHz Doppler-tipped guidewire proximal and distal to the stenosis before, during and after PTCA. Coronary vascular reserve was assessed by intracoronary 12 mg bolus injection of Papaverine. Collateral flow was assessed during balloon occlusion by inverted velocity signals below baseline. Eight patients aged 59 +/- 11 yrs, with unstable angina, a last patent vessel and/or major left ventricular dysfunction (EF < 0.20) had hemopump during PTCA of stenosis (86 +/- 14%) of the LAD (n equals 4) or the LCX (n equals 4). Collateral flow was slightly increased (+25 +/- 18%) by the Hemopump. Hemopump did not strongly affect coronary flow velocity, did not significantly increase collateral flow and increased slightly coronary vascular reserve.

Paper Details

Date Published: 12 May 1995
PDF: 2 pages
Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); doi: 10.1117/12.209132
Show Author Affiliations
Herbert J. Geschwind, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Jean Luc Dubois-Rande, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Patrick J. Dupouy, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Fabrice S. Larrazet, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Jan Kvasnicka, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Ahmed El-Ghalid, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Philippe Deleuze, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)
Daniel Loisance, Univ. Hopital Henri Mondor and Univ. de Paris XII (France)


Published in SPIE Proceedings Vol. 2395:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V
R. Rox Anderson; Graham M. Watson; Rudolf W. Steiner; Douglas E. Johnson; Stanley M. Shapshay; Michail M. Pankratov; George S. Abela; Lawrence S. Bass; John V. White; Rodney A. White; Kenneth Eugene Bartels; Lloyd P. Tate; C. Thomas Vangsness, Editor(s)

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