Coronary stent immobilization during angioplasty by transcoronary ventricular pacing via a guidewire.

Introduction And Objectives: In some patients, cardiac contractions cause the coronary artery segment adjacent to a stent to move in such a way that accurate stent positioning is difficult. A number of techniques have been described for immobilizing the stent at the target site by inducing periods of either asystole or tachycardia. This study shows how pulsatile motion can be controlled by means of rapid ventricular pacing via an angioplasty guidewire.