Structural Damage of Jailed Guidewire During the Treatment of Coronary Bifurcation Lesions: A Microscopic Randomized Trial

Manuel Pan, Soledad Ojeda, Elena Villanueva, Jorge Chavarria, Miguel Romero, Javier Suarez de Lezo, Francisco Mazuelos, Jose Segura, Francisco Carrasco, Francisco Hidalgo, Jose Lopez Aguilera, Sara Rodriguez, Miguel Puente, Jose Suarez de Lezo
JACC. Cardiovascular Interventions 2016 September 26, 9 (18): 1917-24

OBJECTIVES: The study sought to compare the safety (resistance to damage) and efficacy (ability to cross the side branch) of polymer-coated and non-polymer-coated guidewires in the jailed wire technique used during the percutaneous treatment of bifurcation lesions.

BACKGROUND: The jailed wire technique is a useful strategy in the treatment of bifurcation lesions by provisional stenting. However, these wires can be damaged or even be broken during their removal.

METHODS: We performed a randomized study in patients with bifurcation lesions treated by provisional stenting. The jailed wire technique was mandatory, and the types of guidewires, polymer-coated (n = 115) and non-polymer-coated (n = 120), were randomized. After the procedures, the wires were evaluated by stereoscopic microscopy. The induced damage in the wires was classified as follows: no damage, mild, moderate, or severe.

RESULTS: The clinical characteristics were similar between patients treated with polymer-coated or non-polymer-coated wires. Polymer-coated wires were significantly (p < 0.001) more resistant to retrieval damage (only 2 wires showed mild damage) than were non-polymer-coated wires. However, 63 (55%) of the non-polymer-coated wires were damaged; 37 (32%), 24 (21%), and 2 (2%) had mild, moderate, and severe damage, respectively. Additionally, the jailed length of the wire was a factor contributing to the degree of wire damage. The time of side branch wiring was shorter in the polymer-coated wire group (19 ± 40 s vs. 42 ± 72 s; p < 0.05).

CONCLUSIONS: Jailed wires during interventional procedures of bifurcation lesions commonly showed microscopic damage. Polymer-coated wires were more resistant to retrieval damage and were more efficient in crossing the side branch ostium than non-polymer-coated wires. (Jailed Wire Technique in the Treatment of Coronary Bifurcations Lesions With Stent: Stereoscopic Microscopy Study; NCT02516891).

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