Coronary interventions

Double kissing mini-culotte versus mini-culotte stenting: insights from micro-computed tomographic imaging of bench testing

EuroIntervention 2019;15:465-472. DOI: 10.4244/EIJ-D-18-00688

Fudong Hu
Fudong Hu1,2, MD, PhD; Sheng Tu1, MD, PhD; Wei Cai1, MD, PhD; Zhengming Jiang2, MD; Hong Zheng1, MD; Liyan Xiao1, MD; Chunyan Qiu1, MD; Chang Xiong1, MD; Yaner Yao1, MD; Lianglong Chen1, MD, PhD, FACC
1. Department of Cardiology, Union Hospital, Fujian Medical University, Fuzhou, China; 2. Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China

Aims: This study aimed to evaluate the morphologic characteristics of double kissing (DK) mini-culotte and mini-culotte stenting through imaging of bench testing.

Methods and results: DK mini-culotte and mini-culotte stenting were performed in two silicone bifurcated phantoms with branch vessel diameter differences of 0.5 mm (Model 1) and 1.25 mm (Model 2), and their morphologic characteristics were evaluated by micro-computed tomography. In Model 1, metal carina length (0.25±0.13 mm vs 0.55±0.15 mm), area stenosis of the side branch ostium (SBO) (4.65±3.24% vs 12.5±3.93%), and maximum distance of malapposed struts for the wall facing the SBO (0.27±0.08 mm vs 0.49±0.15 mm) were lower in the DK mini-culotte group than in the mini-culotte group. In Model 2, metal carina length (0.21±0.47 mm vs 0.47±0.12 mm), SBO area stenosis (5.13±3.37% vs 15.00±6.18%), and maximum distance of malapposed struts (0.32±0.13 mm vs 0.68±0.10 mm) were also lower in the DK mini-culotte group. The results of factorial analysis showed that maximum distance of malapposed struts tended to be shorter in Model 1 (F=4.226, p=0.062).

Conclusions: Compared with mini-culotte stenting, DK mini-culotte stenting was associated with shorter metal carina length, shorter maximum distance of malapposed struts, and smaller SBO area stenosis. Thus, DK mini-culotte stenting may obtain better morphologic characteristics.

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