IMPACT OF THE LOCATION OF RECURRENT STENOSIS ON REVASCULARIZATION AFTER CORONARY PALMAZ-SCHATZ STENT IMPLANTATION

In 69 patients the incidence of target lesion revascularization during 3-year follow-up after single Palmaz-Schatz stent implantation was co mpared with the in-stent location of recurrent stenoses at 6-month fol low-up angiography. A stenosis was define as a lesion with > 15% diame ter stenosis. After stent implantation, 17 mid-type, 10 proximal and 5 distal-type residual stenoses mere found, At follow-up, 56 mid-type, 11 proximal and 6 distal-type stenoses mere measured. Only proximal-ty pe residual stenoses revealed an increase in diameter stenosis (40 +/- 15% vs 27 +/- 6%; p < 0.05), Five out of 11 patients (45%) with proxi mal-type recurrent stenoses underwent revascularization during follow- up versus 8 out of 56 (14%) with mid-type and none of the 6 patients w ith distal-type stenoses (p = not significant), This clear trend - tow ard more progression and target lesion revascularization procedures in proximal-type recurrent stenoses mainly developing from residual sten oses left after stent implantation - should be verified in larger pati ent collectives.