Impact of Catheter Contact Force on Superior Vena Cava Mapping and Localization of the Right Phrenic Nerve by High Output Pacing

Autor: Jin Iwasawa, Yoshito Iesaka, Akio Kuroi, Hiroshi Taniguchi, Noboru Ichihara, Hitoshi Hachiya, Shinsuke Miyazaki, Hiroaki Nakamura, Makoto Araki, Takamitsu Takagi
Rok vydání: 2015
Předmět:
Zdroj: Journal of Cardiovascular Electrophysiology. 27:290-295
ISSN: 1045-3873
Popis: Contact Force and SVC Isolation Background Right phrenic nerve injury (PNI) is a major concern during superior vena cava (SVC) isolation. Phrenic nerve (PN) localization by high-output pacing is a standard technique for anticipating PNI. This study evaluated the impact of catheter contact force (CF) on SVC mapping and PN localization. Methods Twenty-one atrial fibrillation patients undergoing cardiac enhanced computed tomography (CT) were prospectively enrolled. SVC geometries were created at the SVC–right atrium junction level with low ( 10 × g) CFs. The PN was localized by high-output pacing (10 V, 2 milliseconds) at the SVC and anterior right superior pulmonary vein (RSPV) with different CFs. Results The SVC cross-sectional area was significantly greater when created with high (22.1 ± 4.9 × g) compared with low CFs (4.2 ± 1.3 × g) (5.3 ± 1.4 cm2 vs. 2.3 ± 0.7 cm2, P 1.98 mm from the RSPV were captured by RSPV pacing. Conclusions CF impacted the SVC mapping and PN localization. Cardiac CT identified the PN location, and the distance from the pacing site influenced PN capture.
Databáze: OpenAIRE
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