Immediate and long-term effect of balloon angioplasty or stent implantation on the absolute and relative coronary blood flow velocity reserve.
| Autor: | van Liebergen RA; Department of Cardiology, Academic Medical Center, Amsterdam, Netherlands., Piek JJ, Koch KT, de Winter RJ, Lie KI |
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| Jazyk: | angličtina |
| Zdroj: | Circulation [Circulation] 1998 Nov 17; Vol. 98 (20), pp. 2133-40. |
| DOI: | 10.1161/01.cir.98.20.2133 |
| Abstrakt: | Background: There is controversy regarding the immediate and long-term effects of PTCA on the coronary flow reserve. Methods and Results: A total of 54 patients with 1-vessel disease and normal left ventricular function were studied after balloon angioplasty (n=34) or stent implantation (n=20). Distal coronary blood flow velocity reserve (CFR) was defined as the ratio of adenosine-induced hyperemic versus baseline blood flow velocity with a 0.014-in Doppler guidewire. The relative CFR was defined as the ratio of the distal CFR and the reference CFR measured in the normal adjacent coronary artery. Hemodynamic and angiographic measurements were performed before and directly after balloon angioplasty or stent implantation and at 6-month follow-up. CFR after PTCA Conclusions: An impaired CFR ( |
| Databáze: | MEDLINE |
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