PO-02-095 UTILITY OF LOCAL IMPEDANCE MONITORING TO GUIDE HIGH-POWER SHORT-DURATION RADIOFREQUENCY ABLATION FOR ATRIAL FIBRILLATION
نویسندگان
چکیده
Local impedance (LI) measurement can predict tissue heating during RF ablation. To evaluate the utility of prespecified target LI to prospectively guide high power, short-duration (HPSD) ablation for PV isolation. This is a single-center prospective study 44 consecutive patients who underwent initial isolation AF. Circumferential around antrum each was performed using 4 mm tip open irrigation catheter with an sensor. energy applied at site power output 50 W. Adequacy application solely guided by measured from catheter. electrograms were not monitored Annotation applications based on predefined parameters: the: (1) stability <3 mm; (2) drops >5 Ω (regardless baseline LI) within first 5 seconds; and (3) duration seconds. Each tagged continued total 6-10 seconds LA posterior wall 10-15 other regions. If failed drop quickly (>5-Ω decrease delivery), interrupted adjusted achieve better contact, reapplied. stopped if esophageal temperature rose >40°C or dropped >30 Ω. Ultrahigh-density mapping after pass encircling all PVs inter-lesion distance mm. First-pass achieved in 163 175 (93.1%) 34/44 (77.3%). In (in patients), high-density identified 11 LA-PV conduction gaps sites where did meet annotation criteria (due instability, heating, lack sufficient drop). 7 Patients), 10 satisfy our protocol. Compared points gaps, without (suggestive acutely effective lesions) exhibited significantly larger absolute (16.4 ± 6.7 vs. 12.2 4.6 Ω, p=0.01) % change (14.8% 5.1% 10.9% 4%, p=0.013) delivery. The anatomical distribution shown Figure. No steam pops major complications occurred procedures. Our magnitude may be used safe successful HPSD
منابع مشابه
Radiofrequency ablation for treatment of atrial fibrillation.
INTRODUCTION Atrial Fibrillation (AF) is the most common cardiac arrhythmia which represents a major public health problem. The main purpose of this research is to evaluate the Radiofrequency (RF) ablation effects in the patients with chronic AF scheduled for cardiac surgery because of different heart diseases. METHODS The descriptive and prospective study was conducted on 60 patients with AF...
متن کاملEsophageal fistula formation despite esophageal monitoring and low-power radiofrequency catheter ablation for atrial fibrillation.
Esophageal fistula is a rare but devastating complication that may occur after catheter ablation of atrial fibrillation.1 The mechanism of esophageal injury is not known. Potential mechanisms for injury include direct thermal injury and ischemic injury from damage to the esophageal blood supply. Current ablation strategies use various methods to avoid esophageal injury. We describe an unusual m...
متن کاملRadiofrequency ablation in treatment of atrial fibrillation.
Beside heart failure and metabolic syndrome, atrial fibrillation is termed the cardiovascular epidemic of the twenty-first century. Its increased morbidity and mortality is alarming. The present, most effective therapy of atrial fibrillation is catheter ablation. Successful ablation of atrial fibrillation prevents the occurrence and progression of electrical, structural and mechanic myocardium ...
متن کامل[Surgical ablation of atrial fibrillation using radiofrequency].
OBJECTIVE To evaluate the effectiveness of intraoperative atrial fibrillation ablation using radiofrequency during mitral valve procedure. This report describes the early and midterms results. METHODS Between September 2003 and September 2005, 15 patients with mitral disease were operated. All patients were in chronic atrial fibrillation and with congestive symptoms despite full medication. T...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Heart Rhythm
سال: 2023
ISSN: ['1556-3871', '1547-5271']
DOI: https://doi.org/10.1016/j.hrthm.2023.03.803