Feasibility of kissing balloon technique through guide extension catheters: an experimental bench test

AbstractPrevious reports showed that GuideLiner (GL) and Guidezilla (GZ) can accommodate bulky and multiple devices beyond the official profiles. However, feasibility of kissing balloon technique (KBT) through these devices is unknown. The tested devices included 7Fr-GL/GZ and respective three types of 2.5  mm semi-compliant (SC) and non-compliant (NC) balloons: conventional model (CM), tapered-tip model (TM) and latest model (LM). First, three experienced operators attempted to advance all 21 combinations of the 2 balloons through GL/GZ on the guidewires and assessed the crossability in 3 grades: ea sy, difficult and impossible. Second, the only balloon combinations graded as easy by all operators were tested in the polyurethane-made bifurcation model which required KBT following cross-over stenting. Within the total of 42 device combinations, only one balloon combination of double LM–NC ball oons was classified as easy in both GL/GZ by consensus opinion of the operators. While two combinations of LM–SC and LM–SC/NC balloons were classified as difficult in both GL/GZ, all four combinations of LM–SC/NC and CM/TM–NC balloons were classified as difficult only in GL. Other 32 combina tions were all classified as impossible. In the bifurcation model, the combination of double LM–NC balloons using GL achieved KBT while the same balloon combination with GZ failed. The feasibility of KBT using child-catheter is highly dependent on the device characteristics. The combina...
Source: Cardiovascular Intervention and Therapeutics - Category: Cardiology Source Type: research