scholarly journals Success rate and safety of catheter ablation in preexcitation syndrome: A comparison between adult and pediatric patients

2020 ◽  
Author(s):  
Radosław Pietrzak ◽  
Magda Franke ◽  
Monika Gawałko ◽  
Piotr Lodziński ◽  
Paweł Balsam ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Success Rate ◽  
Pediatric Patients

scholarly journals The Efficacy and Safety of Radiofrequency Catheter Ablation for Cardiac Arrhythmias in Pediatric Patients

2020 ◽  
Vol 23 (2) ◽  
pp. E114-E117
Author(s):  
Su Xinxing ◽  
Zhou Jie ◽  
Zhou Lu ◽  
Bing He
Keyword(s):  
Catheter Ablation ◽  
Success Rate ◽  
Supraventricular Tachycardia ◽  
Radiofrequency Catheter Ablation ◽  
Pediatric Patients ◽  
Accessory Pathway ◽  
Premature Ventricular Contraction ◽  
Efficacy And Safety ◽  
Reentry Tachycardia

Background: We aimed to evaluate the acute and long-term efficacy and safety of radiofrequency catheter ablation (RFCA) in Chinese pediatric patients with arrhythmias. Methods: We gathered clinical data from pediatric patients who underwent RFCA in several large medical centers in China between 2000 and 2019. Results: A total of 4,622 different substrates in 4,622 patients were ablated, with the majority consisting of supraventricular tachycardia (N = 3,831, 82.9%) and ventricular arrhythmias (VAs) (N = 791, 17.1%). The majority of supraventricular tachycardia (SVT) consists of atrioventricular reentry tachycardia (AVRT) (N = 2,492, 65.0%) and atrioventricular nodal reentry tachycardia (AVNRT) (N = 1,075, 28.1%). The accessory pathway location was left-sided in 1,237(49.7%) and right-sided in 1,251(50.3%) of the 2,488 pathways. The VAs consist of premature ventricular contraction (PVC) (N = 597, 75.5%) and ventricular tachycardia (VT) (N = 194, 24.5%). The duration of follow-up ranged from 1 month to 1 year. The overall acute/long-term success rate of RFCA was 96.4%/92.2%, AVRT 97.8%/93.5%, AVRT 99.3%/95.0, PVC 98.1%/92.2%, and VT 81.3%/75.2%. Serious complications occurred in 29 patients (0.6%). Conclusions: This present study shows that RFCA is effective and safe in the treatment of arrhythmias in Chinese pediatric patients, with a high success rate exceeding 90%, low recurrence rate, and significantly reduces the risk of complications. The success rate of left-sided pathway ablation is slightly higher than that of the right-sided pathway. There is no difference in the success rate of RFCA among children of different ages. It could be the first-line therapy in the majority of pediatric patients with SVT and/or VAs.

scholarly journals Catheter ablation in adults with congenital heart disease: a 15-year perspective from a tertiary center

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
V Waldmann ◽  
D Amet ◽  
A Zhao ◽  
M Ladouceur ◽  
C Karsenty ◽  
...  
Keyword(s):  
Congenital Heart Disease ◽  
Heart Disease ◽  
Catheter Ablation ◽  
Success Rate ◽  
Contact Force ◽  
Congenital Heart ◽  
3D Mapping ◽  
Density Mapping ◽  
Tertiary Center ◽  
Procedural Success

Abstract Background With the growing population of adults with congenital heart disease (ACHD), the number of catheter ablation procedures is expected to increase over time. Purpose We aimed to describe temporal trends in volume and outcomes of catheter ablation procedures in ACHD patients in a large tertiary center. Methods Retrospective observational study including all consecutive ACHD patients undergoing catheter ablation in a tertiary reference center over a 15-year period. Acute procedural success rate (including complete success in case of non-inducibility of any arrhythmia at the end of the procedure) as well as freedom from recurrence at 12 months were analyzed. Results From November 2004 to November 2019, 302 catheter ablations in 221 ACHD patients (43.6±15.0 years, 58.9% males) were performed. The annual number of catheter ablation increased progressively from 4 to 60 by year (p<0.001). Intra-atrial reentrant tachycardia/focal atrial tachycardia was the most common targeted arrhythmia (n=217, 71.9%). Over the study period, acute procedural success rate increased from 45.0% to 93.3% (p<0.001), including complete acute procedural success from 45.0% to 88.1% (p<0.001) (Figure 1). The use of irrigated catheters (30.0% to 94.8%, p<0.001), 3D-mapping systems (60.0% to 96.3%, p<0.001), contact force catheters (0.0% to 91.9%, <0.001), and high-density mapping (0.0% to 71.9%, p<0.01) increased significantly. Use of irrigated catheters (OR=3.96, 95% CI: 1.79–8.55), 3D-mapping system (OR=3.55, 95% CI: 1.62–7.55), contact force catheters (OR=3.46, 95% CI: 1.71–7.25), and high-density mapping (OR=3.85, 95% CI: 1.60–7.26) were associated with acute procedural success. The rate of freedom from any recurrence at 12 months increased from 29.4% to 66.2% (p=0.001). Seven (2.3%) non-fatal complications occurred. Conclusions The number of catheter ablation procedures in ACHD patients has considerably increased over the last 15 years. Advances in ablative technologies appear to be associated with a low rate of complications and a significant improvement in acute and midterm outcomes. Evolution of acute procedural success Funding Acknowledgement Type of funding source: None

scholarly journals Endoscopic Third Ventriculostomy in Previously Shunted Children

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Eva Brichtova ◽  
Martin Chlachula ◽  
Tomas Hrbac ◽  
Radim Lipina
Keyword(s):  
Success Rate ◽  
Fourth Ventricle ◽  
Pediatric Patients ◽  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Surgical Revision ◽  
Clinical State ◽  
Third Ventriculostomy ◽  
Safe Procedure ◽  
Shunt Implantation

Endoscopic third ventriculostomy (ETV) is a routine and safe procedure for therapy of obstructive hydrocephalus. The aim of our study is to evaluate ETV success rate in therapy of obstructive hydrocephalus in pediatric patients formerly treated by ventriculoperitoneal (V-P) shunt implantation. From 2001 till 2011, ETV was performed in 42 patients with former V-P drainage implantation. In all patients, the obstruction in aqueduct or outflow parts of the fourth ventricle was proved by MRI. During the surgery, V-P shunt was clipped and ETV was performed. In case of favourable clinical state and MRI functional stoma, the V-P shunt has been removed 3 months after ETV. These patients with V-P shunt possible removing were evaluated as successful. In our group of 42 patients we were successful in 29 patients (69%). There were two serious complications (4.7%)—one patient died 2.5 years and one patient died 1 year after surgery in consequence of delayed ETV failure. ETV is the method of choice in obstructive hydrocephalus even in patients with former V-P shunt implantation. In case of acute or scheduled V-P shunt surgical revision, MRI is feasible, and if ventricular system obstruction is diagnosed, the hydrocephalus may be solved endoscopically.

scholarly journals Benefits of early intervention with catheter ablation in patients with atrial fibrillation

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
S Mohanty ◽  
C Trivedi ◽  
D G Della Rocca ◽  
C Gianni ◽  
B MacDonald ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Early Intervention ◽  
Catheter Ablation ◽  
Success Rate ◽  
Therapeutic Option ◽  
Superior Vena ◽  
Vena Cava ◽  
Posterior Wall ◽  
Early Group ◽  
Late Group

Abstract Background Radiofrequency catheter ablation, a widely recognized therapeutic option for atrial fibrillation (AF) has limited success rate as it is influenced by several factors including duration of AF. Purpose We evaluated the ablation success in AF patients intervened early versus late in the disease course. Methods Consecutive AF patients undergoing their first catheter ablation in 2015–16 at our center were included in the analysis. Patients were classified into two groups based on the time to ablation after AF diagnosis; 1) early: ≤12 months and 2) late: >12 months. All received PV isolation plus isolation of posterior wall and superior vena cava. Additionally, in non-paroxysmal AF cases, non-PV triggers were identified with isoproterenol-challenge and ablated. Patients were prospectively followed up for 3 years with regular rhythm monitoring. Results A total of 752 and 1248 patients were included in the “early” and “late” group respectively. Baseline characteristics of the study population is provided in Table 1 A. At 4 years of follow-up, overall success rate off-antiarrhythmic drugs was significantly higher in the “early” group (65.4% vs 57%, p<0.001). After stratification by AF type, “early” group was still associated with significantly higher success rate compared to the “late” group (Table 1B). Conclusion In this large series with standardized ablation strategy, early intervention with catheter ablation was associated with higher success rate in all AF types. FUNDunding Acknowledgement Type of funding sources: None. Table 1

scholarly journals The Efficacy and Safety of Balloon Enteroscopy-Assisted Endoscopic Retrograde Cholangiography in Pediatric Patients with Surgically Altered Gastrointestinal Anatomy

2021 ◽  
Vol 10 (17) ◽  
pp. 3936
Author(s):  
Kensuke Yokoyama ◽  
Tomonori Yano ◽  
Atsushi Kanno ◽  
Eriko Ikeda ◽  
Kozue Ando ◽  
...  
Keyword(s):  
Success Rate ◽  
Pediatric Patients ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Endoscopic Retrograde Cholangiography ◽  
Adult Patients ◽  
Efficacy And Safety ◽  
Duodenal Papilla ◽  
Endoscopic Retrograde ◽  
Balloon Enteroscopy

Balloon enteroscopy-assisted endoscopic retrograde cholangiography (BEA-ERC) is useful and feasible in adults with pancreatobiliary diseases, but its efficacy and safety have not been established in pediatric patients. We compared the success rate and safety of BEA-ERC between adults and pediatric patients. This single-center retrospective study reviewed 348 patients (pediatric: 57, adult: 291) with surgically altered gastrointestinal anatomies who underwent BEA-ERC for biliary disorders from January 2007 to December 2019. The success rate of reaching the anastomosis or duodenal papilla was significantly lower in pediatric patients than in adult patients (66.7% vs. 88.0%, p < 0.01). The clinical success rate was also significantly lower in pediatric patients (64.9% vs. 80.4%, p = 0.014). The rate of adverse events was significantly higher in pediatric patients than in adults (14.2% vs. 7.7%, p = 0.037). However, if the anastomotic sites were reached in pediatric patients, the treatment was highly successful (97.3%). The time of reaching target site was significantly longer in pediatric patients than in adult patients. This study shows that BEA-ERC in pediatric patients is more difficult than that in adult patients. However, in patients where the balloon enteroscope was advanced to the anastomosis, clinical outcomes comparable to those in adults can be achieved.

Abstract 15472: The Utility of Isoproterenol Testing in Pediatric Patients Following Atrioventricular Nodal Reentry Ablation

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Tahmina Samad ◽  
Eric S Silver ◽  
Leonardo Liberman
Keyword(s):  
Catheter Ablation ◽  
Pediatric Patients ◽  
Common Mechanism ◽  
Slow Pathway ◽  
Significant Cost ◽  
Prior Use ◽  
Acute Success ◽  
Group 2 ◽  
Procedural Success ◽  
Group 1

Intro: AVNRT is a common mechanism of SVT in pediatric patients. Catecholamines such as isoproterenol (ISO) are routinely given during post ablation (ABL) testing to confirm acute success. In light of its recent significant cost increase, the aim of our study was to determine if ISO is necessary in all pediatric patients after AVNRT ablation to ensure acute procedural success. Method: Retrospective study of patients <21 years with AVNRT from 1/06-12/18 who had undergone catheter ablation. We excluded patients with congenital heart disease (CHD), prior ABL, without inducible tachycardia (presumed AVNRT), unsuccessful ABL and those who required ISO to induce tachycardia (TACHY) prior to ABL lesions. All patients were tested after ABL without ISO and if AVNRT was not induced they were retested while on ISO. Result: We identified 232 patients with AVNRT of whom 65 (28%) met the study criteria; 123 (53%) were excluded for requiring ISO to induce AVNRT prior to ABL, 23 (10%) for CHD, 12 (5%) with presumed AVNRT and 9 (4%) with an unsuccessful ABL. The average age was 14.4 yrs (±3.5) and 54% were female. All patients received anesthesia, 40/65 were intubated (62%). Evidence of slow pathway conduction (Spath) (AH jump with atrial extrastimulus testing, presence of AV nodal echo beats or PR>RR) was seen in 35/65 patients (54%). Patients were divided into 2 groups: group 1 (n= 57, 88%) consisted of patients without inducible TACHY post ABL while receiving ISO, group 2 (n = 8, 12%) of patients in whom TACHY was inducible with ISO thus required further ABL. There was no difference between the groups with regards to sex, age, intubation status, prior use of antiarrhythmic meds, or in the incidence of Spath (31/57, 54% vs. 4/8, 50%, p=1). Four of the 8 patients in group 2 with no evidence of Spath had inducible TACHY with ISO. Conclusion: We found that 12% of pediatric patients who did not require ISO to induce AVNRT prior to ABL had inducible TACHY only with ISO after AVNRT ABL. Presence of dual AV nodal physiology after ABL lesions did not predict inducibility of AVNRT on ISO, and 50% of the patients with no evidence of slow pathway conduction by conventional testing had inducible AVNRT with ISO. ISO testing is useful in all pediatric patients to test for inducibility following catheter ablation of AVNRT.

scholarly journals P313General anesthesia improves the success rate of catheter ablation of paroxysmal atrial fibrillation

EP Europace ◽  
2017 ◽  
Vol 19 (suppl_3) ◽  
pp. iii50-iii50 ◽  
Author(s):  
Y. Hama ◽  
M. Ishimura ◽  
M. Yamamoto ◽  
T. Himi
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Success Rate ◽  
Paroxysmal Atrial Fibrillation

P355Complete non-inducibility after radiofrequency ablation for electrical storm improves survival rates

EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
A Nastasa ◽  
C Cojocaru ◽  
D A Radu ◽  
E Goanta ◽  
V Iliese ◽  
...  
Keyword(s):  
Catheter Ablation ◽  
Success Rate ◽  
Statistical Significance ◽  
Survival Rates ◽  
Electrical Storm ◽  
Programmed Ventricular Stimulation ◽  
Ventricular Stimulation ◽  
Threatening Condition ◽  
Acute Success

Abstract Background Electric storm is a life threatening condition, that can complicate multiple cardiac pathologies and is associated with high mortality.  Catheter ablation has been shown to reduce ventricular tachycardia (VT) burden in patients with electrical storm but the optimal procedural endpoint and the therapeutic particularities required by different etiologies are still under debate. Purpose Our objective was to determine if there are any periprocedural factors that influence midterm outcomes.  We also sought if there were any significant differences between the results for ischemic and nonischemic patients. Methods The study included 66 consecutive patients, mean age 60 years, 82% males, treated for electrical storm in our center with endocardial/endo-epicardial radiofrequncy catheter ablation (with or without remote magnetic navigation). Acute success was defined as elimination of the clinical tachycardia with complete non-inducibility (including ventricular fibrillation) or non-inducibility for monomorphic VT with programmed ventricular stimulation using up to 4 extrastimuli. Mean follow-up duration was 9.4 months and the type of recurrence was catalogued in 3 categories: initial VT (isolated), electric storm and other sustained VT. Results The overall acute success rate was 93%, complete non-inducibility was achieved in 64.5% and non-inducibility for monomorphic VT in 87.5% of the cases. Epicardial approach was used in 44% of the non-ischemic cases vs 10.5% of the ischemic ones (p = 0.005). There were no significant differences between complete noninducibility rates and recurrence/death rates of the ischemic vs nonischemic groups. Among the variables analysed for predicting noninducibility, only two reached statistical significance: mean QRS duration of the clinical tachycardia (160 ± 32 ms vs 240 ± 63.3ms, p = 0.02) and shortest RS complex (124 ± 14.7 ms vs 210 ± 12ms, p = 0.02). Recurrent ventricular arrhythmia occurred in 25% of the patients during follow up, from which: 27.2 % initial VT (isolated), 36.4% electric storm and 36.4% other sustained VT. Death rate was 10.6% (7 patients).  Kaplan Meier plot showed that the lot with complete noninducibility after programmed ventricular stimulation had better survival rates (p = 0.01). Conclusions Ablative therapy had a good acute success rate, without significant differences between ischemic and noninschemic patients in our study. Complete noninducibility after programmed ventricular stimulation  after ablation was associated with better survival rates. Unsuccessfull ablation is a predictor of inhospital death of these patients.

Sign in / Sign up

Export Citation Format

Share Document