Is side branch lesion length an independent predictor of acute side branch occlusion in provisional strategy? Analysis of 524 consecutive bifurcation lesions

Abstract

Objectives: To detect the impact of side branch (SB) lesion length on acute SB occlusion after main vessel (MV) stenting. Methods: Five hundred sixteen consecutive patients with 524 bifurcation lesions undergoing one-stent techniques were studied. Multivariate logistic regression analysis was performed to identify independent predictors of acute SB occlusion. The lesions were also further divided into two groups according to the median SB lesion length. The incidences of SB occlusion and lesion characteristics in the two subgroups were compared. Results: The SB lesion length was not significantly different between lesions with and without SB occlusion. In the SB occlusion group, the distance between the position of the minimal lumen diameter and SB ostium was significantly shorter than that in the non-SB occlusion group (1.76 ± 1.04 mm vs. 2.72 ± 2.65 mm; P = 0.0003). Multivariate logistic regression analysis showed that high BA before stenting, plaque accumulation located on the same side as the SB, the Thrombolysis In Myocardial Infarction (TIMI) flow grade of the SB before stenting, and the DS of the SB before MV stenting were independently predictive of SB occlusion. Conclusions: SB lesion length cannot be regarded as an independent predictor of acute SB occlusion after MV stenting.