PMID: 11917195Mar 28, 2002Paper

Time course and extent of collateral channel recruitment during coronary angioplasty

Coronary Artery Disease
Mark J MasonCharles D J Ilsley

Abstract

To assess the extent and timing of recruitment of collateral channels during coronary angioplasty in patients without spontaneous collaterals at diagnostic angiography. The extent of collateral channel recruitment during coronary angioplasty is variable and its contribution to myocardial protection is not well established. The functional significance of collaterals recruited during balloon occlusion remains in question. Collateral channels were assessed in 16 patients by contralateral injection at 30, 60 and 90 s into each of four 90 s inflations and by a 0.014 " Doppler guide wire distal to the lesion. Angiographic collateral recruitment was evident in 11 out of 16 patients (71%), but in only four (24%) by intracoronary Doppler. Grade I collaterals were present in seven patients, grade II in three and grade III in two. Collaterals were evident angiographically by 30 s in 10 out of 11 patients, with no progressive recruitment during subsequent inflations. In the four patients with Doppler evidence of collateral flow there were no differences in any flow velocity parameters with successive inflations. There was no difference in either maximum ST segment shift or time to 2 mm ST segment elevation between successive inflations. Co...Continue Reading

References

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Dec 7, 2000·Coronary Artery Disease·M J MasonC D Ilsley

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Citations

Apr 22, 2004·QJM : Monthly Journal of the Association of Physicians·M H TayebjeeR J MacFadyen
Jan 25, 2014·EuroIntervention : Journal of EuroPCR in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology·Nikolaos PagonasEva-Elina Buschmann
Sep 25, 2003·Physiological Reviews·Derek M Yellon, James M Downey

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