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Esophageal endoscopy results after pulmonary vein isolation using the single big cryoballoon technique.

Abstract：

INTRODUCTION:Reversible esophageal thermal lesions after cryoballoon pulmonary vein isolation (CB-PVI) have been reported when using variable balloon sizes. The aim of this study was to investigate (1) the incidence of esophageal thermal lesions, and (2) esophageal temperature changes associated with CB-PVI using the single big cryoballoon technique. METHODS AND RESULTS:Thirty-eight patients with atrial fibrillation underwent successful CB-PVI using only the 28 mm cryoballoon. Luminal esophageal temperature (LET) was continuously monitored by 3 thermocouples. Fluoroscopic distance from cryoballoon to esophagus probe was retrospectively evaluated in RAO 30 degrees and LAO 40 degrees projections. All patients underwent postprocedural esophageal endoscopy. Average minimal LET was lower during freezing at inferior PVs, when compared to superior PVs: 35.4 +/- 0.9 (range: 32.6 to 37.4; RSPV); 31.5 +/- 7.5 (2.5 to 37.6; RIPV); 32.9 +/- 5.2 (8.5 to 36.5; LSPV); and 30.3 +/- 8.4 degrees C (-6 to 36.7 degrees C; LIPV); P = 0.001. We found steep temperature gradients over distance (1) from the cryoballoon center (LETs < 10 degrees C confined to a distance of < 15 mm in both RAO 30 degrees and LAO 40 degrees projections), and (2) along the esophagus long axis, underscoring the need for multiple measurement sites. None of the patients showed esophageal thermal lesions at endoscopy after 3 +/- 1 (range 1-7) days. No AEF occurred during a follow-up of 125 +/- 78 days. CONCLUSION:In a cohort of AF patients treated by the single big cryoballoon technique, CB-PVI was not associated with thermal esophageal lesions.

journal_name

J Cardiovasc Electrophysiol

journal_title

Journal of cardiovascular electrophysiology

authors

Fürnkranz A,Chun KR,Metzner A,Nuyens D,Schmidt B,Burchard A,Tilz R,Ouyang F,Kuck KH

doi

10.1111/j.1540-8167.2010.01739.x

subject

Has Abstract

pub_date

2010-08-01 00:00:00

pages

869-74

issue

8

eissn

1045-3873

issn

1540-8167

pii

JCE1739

journal_volume

21

pub_type

杂志文章

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