Coronary blood flow during percutaneous hemopump in patients at high risk for angioplasty

Herbert J. Geschwind M.D.; Jean Luc Dubois-Rande; Patrick J. Dupouy; Fabrice S. Larrazet; Jan Kvasnicka; Ahmed El-Ghalid; Philippe Deleuze; Daniel Loisance

doi:10.1117/12.209132

12 May 1995 Coronary blood flow during percutaneous hemopump in patients at high risk for angioplasty

Herbert J. Geschwind M.D., Jean Luc Dubois-Rande, Patrick J. Dupouy, Fabrice S. Larrazet, Jan Kvasnicka, Ahmed El-Ghalid, Philippe Deleuze, Daniel Loisance

Author Affiliations +

Proceedings Volume 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V; (1995) https://doi.org/10.1117/12.209132
Event: Photonics West '95, 1995, San Jose, CA, United States

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.

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Herbert J. Geschwind M.D., Jean Luc Dubois-Rande, Patrick J. Dupouy, Fabrice S. Larrazet, Jan Kvasnicka, Ahmed El-Ghalid, Philippe Deleuze, and Daniel Loisance "Coronary blood flow during percutaneous hemopump in patients at high risk for angioplasty", Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); https://doi.org/10.1117/12.209132

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KEYWORDS

Blood circulation

Francium

Arteries

Patents

Doppler effect

Magnesium

Surgery

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