Non-invasive topical diagnostics of heart arrhythmias

The aim of this study was to measure the accuracy of noninvasively obtained ventricular activation (isolated epicardial vs combined endo-epicardial mapping) as compared with that of standard invasive mapping in patients with ventricular arrhythmias. 94 patients (35 males and 59 females) aged 20 to 67 years (mean age 42.6 years) with ventricular arrhythmias of different localization and etiology and 8 patients (4 males and 4 females) aged 21 to 65 years (mean age 48.8 years) with atrial arrhythmias were examined. All patients underwent noninvasive electrophysiological examination, which was performed with Amycard System, subsequent intracardiac mapping and radiofrequency catheter ablation. The arrythmogenic focus localizations coincided in 83 cases, in 11 patients with ventricular arrhythmias some variances were observed and in patients with atrial arrhythmias no such variances were found. Thus, the accuracy of noninvasive mapping turned out to be 89.2%.

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OUTCOMES OF RADIOFREQUENCY CATHETER ABLATION OF ATRIAL ARRHYTHMIAS IN KIDNEY AND LIVER TRANSPLANT RECIPIENTS

Journal of the American College of Cardiology ◽

10.1016/s0735-1097(21)01676-4 ◽

2021 ◽

Vol 77 (18) ◽

pp. 317

Author(s):

Elizabeth Wang ◽

Stephanie Kochav ◽

Angelo Biviano ◽

Hasan Garan ◽

Hirad Yarmohammadi

Keyword(s):

Catheter Ablation ◽

Liver Transplant ◽

Radiofrequency Catheter Ablation ◽

Atrial Arrhythmias ◽

Transplant Recipients ◽

Liver Transplant Recipients

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Idiopathic ventricular arrhythmias originating from the tricuspid annulus: Prevalence, electrocardiographic characteristics, and results of radiofrequency catheter ablation

Heart Rhythm ◽

10.1016/j.hrthm.2006.09.025 ◽

2007 ◽

Vol 4 (1) ◽

pp. 7-16 ◽

Cited By ~ 129

Author(s):

Hiroshi Tada ◽

Kazuyoshi Tadokoro ◽

Sachiko Ito ◽

Shigeto Naito ◽

Tohru Hashimoto ◽

...

Keyword(s):

Catheter Ablation ◽

Ventricular Arrhythmias ◽

Radiofrequency Catheter Ablation ◽

Tricuspid Annulus

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New-onset ventricular arrhythmias post radiofrequency catheter ablation for atrial fibrillation

Medicine ◽

10.1097/md.0000000000004648 ◽

2016 ◽

Vol 95 (36) ◽

pp. e4648 ◽

Cited By ~ 1

Author(s):

Lingmin Wu ◽

Yanlai Lu ◽

Yan Yao ◽

Lihui Zheng ◽

Gang Chen ◽

...

Keyword(s):

Atrial Fibrillation ◽

Catheter Ablation ◽

Ventricular Arrhythmias ◽

Radiofrequency Catheter Ablation ◽

New Onset

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Radiofrequency catheter ablation of ventricular arrhythmias arising from the region above pulmonary valve

BMC Cardiovascular Disorders ◽

10.1186/s12872-019-1220-2 ◽

2019 ◽

Vol 19 (1) ◽

Author(s):

Jin Li ◽

Cheng Zheng ◽

Zhi-Rui Liu ◽

Jun Ma ◽

Ge Jin ◽

...

Keyword(s):

Catheter Ablation ◽

Pulmonary Artery ◽

Ventricular Arrhythmias ◽

Radiofrequency Catheter Ablation ◽

Wave Amplitude ◽

Pulmonary Valve ◽

Main Stem ◽

Comprehensive Investigation ◽

R Wave Amplitude

Abstract Background Ventricular arrhythmias (VAs) arising from the origin above pulmonary valve lack comprehensive investigation. This study aimed to disclose the characteristics and radiofrequency catheter ablation (RFCA) outcomes for those VAs. Methods One hundred six VAs arising from the region above pulmonary valve treated with RFCA were included in this study. Results Seventy-five cases were identified in the pulmonary sinus cusps (PSCs, 32 in left sinus cusp (PLC), 15 in right (PRC), 28 in anterior (PAC)) and 31 cases were in the main stem of pulmonary artery (MSPA, 18 above PLC (LMSPA), 3 above PRC (RMSPA), 10 above PAC (AMSPA)). Compared with PSCs VAs, MSPA VAs exhibited a higher R wave amplitude in the inferior leads, a total inferior R amplitude > 5.1 mV predicting MSPA origins. LMSPA, RMSPA and AMSPA VAs resembled PLC, PRC and PAC VAs in electrocardiographic characteristics respectively. No electrophysiological differences were found between PSCs and MSPA VAs. The irrigated-up catheter and R0 Swartz long sheath were more utilized for ablation of PSCs VAs than for MSPA VAs. All these VAs were successfully eliminated by RFCA. Conclusion VAs arising from the origin above pulmonary valve were common. Based on certain electrocardiographic characteristics, they could be roughly located, which contributed to an effective RFCA.

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Effect of radiofrequency catheter ablation of accessory pathways on autonomic tone in children

Cardiology in the Young ◽

10.1017/s1047951100005175 ◽

1999 ◽

Vol 9 (4) ◽

pp. 377-383 ◽

Cited By ~ 1

Author(s):

Ruchir Sehra ◽

Joyce E. Hubbard ◽

Susan P. Straka ◽

Naomi S. Fineberg ◽

Douglas P. Zipes ◽

...

Keyword(s):

Heart Rate ◽

Catheter Ablation ◽

Supraventricular Tachycardia ◽

Radiofrequency Catheter Ablation ◽

Autonomic Function ◽

Accessory Pathways ◽

Non Invasive ◽

Autonomic Changes ◽

Before And After ◽

Autonomic Blockade

AbstractBackgroundRadiofrequency catheter ablation is standard treatment for children with re-entrant supraventricular tachycardias. Autonomic changes have been noted after such ablation for atrioventricular nodal re-entry tachycardia, but not as well documented with atrioventricular re-entry over an accessory pathway.Methods and resultsIn 10 normal paediatric volunteers and 12 children referred for electrophysiologic testing and radiofrequency ablation of supraventricular tachycardia, non-invasive autonomic function tests and tilt-table testing were performed, and the variability in 24-h heart rate was analysed. Patients with supraventricular tachycardia underwent these tests both 24–72 h before and 24 h after ablation. Patients with tachycardia underwent additional autonomic testing to assess the sensitivity of baroreceptors and the intrinsic heart rate with autonomic blockade immediately before and after ablation. One non-invasive autonomic function test, namely handgrip, demonstrated significant differences (p < 0.05) in diastolic blood pressure before and after ablation, though these values did not differ from controls. Significant decreases were noted in two indexes of the variability of heart rate before and after ablation (p < 0.05). Certain tilt test variables also demonstrated significant differences between controls and those with tachycardia subsequent to ablation. Intracardiac testing demonstrated changes (p < 0.05) in sinus cycle lengths, effective refractory periods and/or blood pressures at baseline and during testing of the sensitivity of baroreceptors before and after ablation. These changes were consistent with increased sympathetic or decreased parasympathetic tone. With autonomic blockade, these differences were abolished.ConclusionsCatheter ablation of accessory pathways in children was associated with changes consistent with increased sympathetic or decreased parasympathetic tone. These autonomic changes persisted 24 h after the ablation procedure.

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