Adenosine revives catheter‐induced mechanical blocks in radiofrequency ablation. (7th September 2021)

• Record Type: Journal Article
• Authors: Tsukahara, Keita; Oginosawa, Yasushi; Yagyu, Keishiro; Miyamoto, Taro; Yamagishi, Yasunobu; Ohe, Hisaharu; Kohno, Ritsuko; Kataoka, Masaharu; Abe, Haruhiko
• Is Part Of: Journal of cardiovascular electrophysiology. Volume 32:Number 11(2021)
• Page Start: 3103
• Page End: 3106
• Publication Date: 2021-09-07
• Subjects: adenosine -- atrial fibrillation -- catheter‐induced mechanical trauma -- dormant conduction -- superior vena cava isolation; Blood vessels -- Physiology -- Periodicals; Electrophysiology -- Periodicals; Heart -- Physiology -- Periodicals; 612.1
• DOI: 10.1111/jce.15235
• Languages: English
• ISSNs: 1045-3873

Abstract

Abstract: Adenosine can hyperpolarize the atrial action potential, which helps rapidly re‐establish the membrane potential in ablated sites and unmask "dormant conduction." It has been reported that pharmacological agents, including adenosine, were unable to revive traumatized tissues. We present the first case of the catheter‐induced mechanical block ("bump" phenomenon) that was unmasked with adenosine administration in the working myocardium of the superior vena cava. This result may be because, unlike before, we could determine the force of contact between the tip of the ablation catheter and the myocardial tissue. This case suggests the clinical usefulness of adenosine for unmasking bumped sites.