Abstract
Aims: To test the hypothesis that ketanserin augments coronary collateral blood flow and decreases myocardial ischemia during balloon angioplasty. Methods and Results: Forty-four patients with single vessel disease and stable angina were studied. Collateral flow was determined during balloon inflations, based on the distal velocity time integral (13 patients) or on coronary wedge/mean arterial pressure measurements (10 patients). The 2nd and 3rd inflations lasted the same time and between them 1.5 mg intracoronary ketanserin in 10 ml normal saline was administered over 3 min. In 21 control subjects normal saline alone was given. In the flow velocity group the velocity time integral was 78.5 ± 53.1 mm during the 2nd inflation and 106.0 ± 43.2 mm during the 3rd (p < .05), while the ST deviation was 1.1 ± .7 and .7 ± .7 mm, respectively (p. < .05). In the intracoronary pressure group the CWP/MBP was .40 ± .10 during the 2nd inflation and .45 ± .11 during the 3rd (p. < .05), while the ST deviation was 1.2 ± .8 and .8 ± .8 mm respectively (p. < .05). In the controls no variables changed during the tested inflations. Conclusion: Intracoronary administration of ketanserin augments coronary collateral flow and decreases myocardial ischemia during balloon angioplasty. This could be of clinical significance in the management of acute ischemic syndromes.
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Kyriakides, Z.S., Sbarouni, E., Nikolaou, N. et al. Intracoronary Ketanserin Augments Coronary Collateral Blood Flow and Decreases Myocardial Ischemia During Balloon Angioplasty. Cardiovasc Drugs Ther 13, 415–422 (1999). https://doi.org/10.1023/A:1007851906207
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DOI: https://doi.org/10.1023/A:1007851906207