Histological examination of the right atrial appendage after failed catheter ablation for focal atrial tachycardia complicated by cardiogenic shock in a post-partum patient

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• 作者：Akira Mizukami ; MD^a ; ^{akmizukami@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Makoto Suzuki ; MD^a ; Rena Nakamura ; MD^b ; Shunsuke Kuroda ; MD^a ; Maki Ono ; MD^a ; Yuya Matsue ; MD^a ; Ryota Iwatsuka ; MD^a ; Taishi Yonetsu ; MD^a ; Akihiko Matsumura ; MD^a ; Yuji Hashimoto ; MD^a
• 关键词：Right atrial appendage ; Atrial tachycardia ; Pregnancy ; Cardiogenic shock ; Histology
• 刊名：Journal of Arrhythmia
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：32
• 期：3
• 页码：227-229
• 全文大小：658 K

文摘

A 26-year-old woman in her first pregnancy presented with persistent atrial tachycardia (AT). AT was resistant to medications, cardioversions, and the first attempt of catheter ablation. Two months after delivery she developed severe systolic dysfunction and circulatory collapse. Emergent catheter ablation was performed with the support of percutaneous cardiopulmonary bypass and intraaortic balloon pump. The AT originated in the apex of the right atrial appendage (RAA). Repeated attempts at ablation were unsuccessful, prompting surgical RAA resection, which terminated the tachycardia and improved the cardiac function. Histological examination of resected RAA provided insights into mechanism of resistance to catheter ablation.