The Effect of Contact Force in Atrial Radiofrequency€Ablation
نویسندگان
چکیده
Steven E. Williams, MB CHB,* James Harrison, PHD,* Henry Chubb, MBBS,* Lars Ølgaard Bloch, MD,y Niels Peter Andersen, MD,y Høgni Dam, MD,y Rashed Karim, PHD,* John Whitaker, MB BCH,* Jaswinder Gill, MD,z Michael Cooklin, MD,z C. Aldo Rinaldi, MD,z Kawal Rhode, PHD,* Matthew Wright, PHD,* Tobias Schaeffter, PHD,* Won Yong Kim, PHD,y Henrik Jensen, PHD, MD,y Reza Razavi, MD,* Mark D. O’Neill, DPHIL*
منابع مشابه
Contact Force and Atrial Fibrillation Ablation.
Catheters able to measure the force and vector of contact between the catheter tip and myocardium are now available. Pre-clinical work has established that the degree of contact between the radiofrequency ablation catheter and myocardium correlates with the size of the delivered lesion. Excess contact is associated with steam pops and perforation. Catheter contact varies within the left atrium ...
متن کاملPossibility of contact force monitoring during catheter ablation of ventricular tachycardia
Nowadays, electroanatomical mapping system are widely used to clarify arrhythmic substrates and identify the target of ablation not only in patients with supraventricular tachycardia or atrial fibrillation but also ventricular tachycardia. To achieve good results in the procedure, it is important to obtain precise mapping information and to deliver adequate radiofrequency energy. Although it is...
متن کاملTarget indices for clinical ablation in atrial fibrillation: insights from contact force, electrogram, and biophysical parameter analysis.
BACKGROUND In animal studies of radiofrequency ablation, lesion sizes plateau as the maximum lesion size is reached for an ablation. Lesion parameters are not available in clinical ablations, but preclinical work suggests that these correlate with impedance drop and electrogram attenuation. Characterization of the relationships between catheter contact force, ablation duration, and these surrog...
متن کاملLocations of high contact force during left atrial mapping in atrial fibrillation patients: electrogram amplitude and impedance are poor predictors of electrode-tissue contact force for ablation of atrial fibrillation.
BACKGROUND During radiofrequency ablation, high electrode-tissue contact force (CF) is associated with increased risk of steam pop and perforation. The purpose of this study, in patients undergoing ablation of paroxysmal atrial fibrillation, was to: (1) identify factors producing high CF during left atrial (LA) and pulmonary vein mapping; (2) determine the ability of atrial potential amplitude ...
متن کاملSuccessful Ablation of Cavotricuspid Isthmus-dependent Atrial Flutter Guided by Contact Force Vector in a Patient After a Tricuspid Valve Replacement
A 46-year-old man after a tricuspid valve replacement due to traumatic severe tricuspid regurgitation developed cavotricuspid isthmus-dependent counterclockwise atrial flutter. During a linear ablation using a contact force-sensing irrigated ablation catheter, the flutter could be terminated by a radiofrequency application within a deep pouch just below the bioprosthetic tricuspid valve.
متن کاملOptimal Force–Time Integral for Pulmonary Vein Isolation According to Anatomical Wall Thickness Under the Ablation Line
BACKGROUND Low contact force and force-time integral (FTI) during catheter ablation are associated with ineffective lesion formation, whereas excessively high contact force and FTI may increase the risk of complications. We sought to evaluate the optimal FTI for pulmonary vein (PV) isolation based on atrial wall thickness under the ablation line. METHODS AND RESULTS Contact force parameters a...
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