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Balloon Catheter Position and its Relationship with Esophageal Temperature during Pulmonary Vein Isolation using High-Intensity Focused Ultrasound.
MedLine Citation:
PMID:  23071381     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: HIFU can achieve PVI, but severe esophageal complications have happened. We analyzed relative position of HIFU balloon catheter (BC) to esophageal temperature (ET) probe and correlated it to ET changes.
METHODS AND RESULTS: Before each ablation relative position of HIFU BC to ET probe was recorded in RAO 30º and LAO 40º. We compared ablations where ET at end of ablation was <38.5ºC or ≥38.5ºC and <40.0ºC or ≥40.0ºC. A total of 600 images from 311 ablations in 28 patients (18 male, age 63±7 years), were analyzed. ET ≥38.5ºC was reached when distance from BC to ET probe was: <20mm in LAO for RSPV and <29mm in LAO for RIPV. For RIPV ET ≥38.5ºC was reached when angle between BC and ET probe was significantly smaller in LAO and RAO. ET ≥40.0ºC was reached when distance of BC to ET probe was: <20mm in LAO for RIPV, <14mm in RAO for RIPV, <18mm in RAO for LIPV. ET increased to ≥40.0ºC when distance from BC to ET probe was significantly longer in LAO for LIPV. For RIPV ET ≥40.0ºC was reached when angle between BC and ET probe was significantly smaller in LAO.
CONCLUSION: There is a relationship between distance/angle of HIFU BC to ET probe and ET: shorter distances and smaller angles can cause higher ET.
Authors:
Kars Neven; Andreas Metzner; Boris Schmidt; Feifan Ouyang; Karl-Heinz Kuck
Publication Detail:
Type:  Journal Article     Date:  2012-09-01
Journal Detail:
Title:  Indian pacing and electrophysiology journal     Volume:  12     ISSN:  0972-6292     ISO Abbreviation:  Indian Pacing Electrophysiol J     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-16     Completed Date:  2012-10-17     Revised Date:  2013-05-30    
Medline Journal Info:
Nlm Unique ID:  101157207     Medline TA:  Indian Pacing Electrophysiol J     Country:  India    
Other Details:
Languages:  eng     Pagination:  192-203     Citation Subset:  -    
Affiliation:
Asklepios Klinik St. Georg, Department of Cardiology, Hamburg, Germany.
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