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Title of Journal: J Interv Card Electrophysiol

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Abbravation: Journal of Interventional Cardiac Electrophysiology

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Springer US

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1572-8595

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Contact force and impedance decrease during ablati

Authors: Sven Knecht Tobias Reichlin Nikola Pavlovic Beat Schaer Stefan Osswald Christian Sticherling Michael Kühne
Publish Date: 2015/04/30
Volume: 43, Issue: 3, Pages: 297-306
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Abstract

We retrospectively analyzed RF applications from 32 patients undergoing catheter ablation for paroxysmal atrial fibrillation using a forcesensing catheter and 3D mapping system CF catheter location and orientation relative to the tissue during ablation as well as the absolute impedance decrease during the first 20 s of ablation as a surrogate for lesion effectiveness were analyzed for 791 RF applicationsWhile a higher CF was achieved around the right pulmonary veins 125 vs 114 g p = 0045 a lower median absolute impedance decrease within the first 20 s was seen around the right veins compared to the left veins 93 vs 102 Ω p = 002 With different catheter orientations relative to the tissue higher CF and impedance decrease was seen when the catheter was orientated parallel or oblique to the tissue 30°–145° as compared perpendicularly 0–30° with a median CF of 132 vs 80 g p  0001 and a median impedance decrease during the first 20 s of 11 vs 7 Ω p  0001 Importantly achieved CF baseline impedance catheter orientation and location all independently predicted the initial absolute and relative impedance decrease in a multivariable linear regression model p  005Sven Knecht Tobias Reichlin and Beat Schaer have no conflict of interest Nikola Pavlovic is supported by an educational grant of the EHRA Stefan Osswald is a speaker of Bureau for Medtronic Boston Scientific Biotronik and St Jude Medical received unrestricted grants from Medtronic Boston Scientific Biotronik and St Jude Medical Christian Sticherling is a member of Medtronic Advisory Board Europe and received educational grants from Biosense Webster and Biotronik Michael Kühne received educational grants from Biosense Webster proctor for Medtronic and a speaker of Bureau for Boston Scientific St Jude Medical and Biotronik


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Other Papers In This Journal:

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  2. Trends in percutaneous pericardial access during catheter ablation of ventricular arrhythmias: a single-center experience
  3. Comparison between pulsed and continuous radiofrequency delivery
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  5. Electrophysiologic characteristics of atrial tachycardia originating from the superior vena cava
  6. Clinical evaluation of a new technique to monitor return electrode skin temperature during radiofrequency ablation
  7. Arrhythmia phenotype in mouse models of human long QT
  8. Long-term monitoring of respiratory rate in patients with heart failure: the Multiparametric Heart Failure Evaluation in Implantable Cardioverter-Defibrillator Patients (MULTITUDE-HF) study
  9. Association between red blood cell distribution width and response to cardiac resynchronization therapy
  10. Modification of atrioventricular conduction in dogs by laser irradiation of Koch’s triangle guided by balloon-tipped cardioscope
  11. Novel SCN5A mutations in two families with “Brugada-like” ST elevation in the inferior leads and conduction disturbances
  12. Clinical criteria for predicting benefit of ICD/PM in post myocardial infarction patients: an AVID and CAST analysis
  13. Characteristics and distribution of complex fractionated atrial electrograms in patients with paroxysmal and persistent atrial fibrillation
  14. Predictors of serious arrhythmic events in patients with nonischemic heart failure
  15. Ablation time efficiency and lesion volume - in vitro comparison of 4 mm, non irrigated, gold- and platinum-iridium-tip radiofrequency ablation catheters
  16. Late thromboembolic events after circumferential pulmonary vein ablation of atrial fibrillation
  17. Fluoroless catheter ablation in adults: a single center experience
  18. Patient care and physician conflicts of interests: the Hydra grows new heads but is any Hercules in sight?
  19. Cardiac calcified amorphous tumor in a patient presenting for ventricular tachycardia ablation: intracardiac echocardiogram diagnosis and management
  20. Atrial fibrillation ablation in patients with gastroesophageal reflux disease or irritable bowel syndrome—the heart to gut connection!
  21. Clinical outcome of left atrial ablation for paroxysmal atrial fibrillation is related to the extent of radiofrequency ablation
  22. Predictors of chronic pulmonary vein reconnections after contact force-guided ablation: importance of completing electrical isolation with circumferential lines and creating sufficient ablation lesion densities
  23. Left atrial posterior wall isolation: the icing on the cake
  24. Catheter ablation of arrhythmic storm triggered by monomorphic ectopic beats in patients with coronary artery disease
  25. Verapamil-sensitive left anterior fascicular ventricular tachycardia associated with a healed myocardial infarction: changes in the delayed Purkinje potential during sinus rhythm

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