Login
Search
Search
0 Dates
2024
2023
2022
2021
2020
2019
2018
0 Events
CPC 2018
CPC 2019
Curso de Atualização em Medicina Cardiovascular 2019
Reunião Anual Conjunta dos Grupos de Estudo de Cirurgia Cardíaca, Doenças Valvulares e Ecocardiografia da SPC
CPC 2020
CPC 2021
CPC 2022
CPC 2023
CPC 2024
0 Topics
A. Basics
B. Imaging
C. Arrhythmias and Device Therapy
D. Heart Failure
E. Coronary Artery Disease, Acute Coronary Syndromes, Acute Cardiac Care
F. Valvular, Myocardial, Pericardial, Pulmonary, Congenital Heart Disease
G. Aortic Disease, Peripheral Vascular Disease, Stroke
H. Interventional Cardiology and Cardiovascular Surgery
I. Hypertension
J. Preventive Cardiology
K. Cardiovascular Disease In Special Populations
L. Cardiovascular Pharmacology
M. Cardiovascular Nursing
N. E-Cardiology / Digital Health, Public Health, Health Economics, Research Methodology
O. Basic Science
P. Other
0 Themes
01. History of Cardiology
02. Clinical Skills
03. Imaging
04. Arrhythmias, General
05. Atrial Fibrillation
06. Supraventricular Tachycardia (non-AF)
07. Syncope and Bradycardia
08. Ventricular Arrhythmias and Sudden Cardiac Death (SCD)
09. Device Therapy
10. Chronic Heart Failure
11. Acute Heart Failure
12. Coronary Artery Disease (Chronic)
13. Acute Coronary Syndromes
14. Acute Cardiac Care
15. Valvular Heart Disease
16. Infective Endocarditis
17. Myocardial Disease
18. Pericardial Disease
19. Tumors of the Heart
20. Congenital Heart Disease and Pediatric Cardiology
21. Pulmonary Circulation, Pulmonary Embolism, Right Heart Failure
22. Aortic Disease
23. Peripheral Vascular and Cerebrovascular Disease
24. Stroke
25. Interventional Cardiology
26. Cardiovascular Surgery
27. Hypertension
28. Risk Factors and Prevention
29. Rehabilitation and Sports Cardiology
30. Cardiovascular Disease in Special Populations
31. Pharmacology and Pharmacotherapy
32. Cardiovascular Nursing
33. e-Cardiology / Digital Health
34. Public Health and Health Economics
35. Research Methodology
36. Basic Science
37. Miscellanea
0 Resources
Abstract
Slides
Vídeo
Report
CLEAR FILTERS
A Novel Simplified Approach to Radiofrequency Catheter Ablation of Idiopathic Right Ventricular Outflow Tract Premature Ventricular Contractions
Session:
Painel 4 -Arritmologia 1
Speaker:
Leonor Parreira
Congress:
CPC 2020
Topic:
C. Arrhythmias and Device Therapy
Theme:
04. Arrhythmias, General
Subtheme:
04.4 Arrhythmias, General – Treatment
Session Type:
Posters
FP Number:
---
Authors:
Leonor Parreira; Rita Marinheiro; Pedro Lopes Do Carmo; Dinis Valbom Mesquita; José Maria Farinha; Pedro Campos Amador; Jose Venancio; Ana Soares; Diogo Cavaco; Lia Marques; Joana Pinho; Pedro Adragão
Abstract
<p><strong>Background: </strong>Ablation of premature ventricular contractions (PVCs) is based on activation mapping. This strategy is impaired by the absence or paucity of PVCs on the day of the procedure. Frequently, in sinus rhythm (SR) isolated diastolic potentials are present at the successful ablation site, although their meaning is still a matter of debate.</p> <p><strong>Objective:</strong> We intended to study a simplified approach based on mapping of diastolic potentials for ablation of idiopathic right ventricular outflow tract (RVOT) PVCs in patients that present with a low PVC burden during the procedure.<br /> <strong>Methods:</strong> We included 10 consecutive patients referred for ablation of frequent (>10000/24 hours) idiopathic PVCs from the RVOT that present with less than 2 PVCs/min in the beginning of the procedure and 10 controls without PVCs. The ablation was based on fast mapping of the RVOT in SR looking for diastolic potentials, defined as isolated small amplitude potentials occurring after the T wave of the surface ECG in SR (Figure). The area with diastolic potentials was marked and a reduced activation mapping of the PVCs was done in the area. We evaluated the procedure, mapping, fluoroscopy and radiofrequency (RF) application times. The number of points used for the maps, the area of diastolic potentials, local activation time and success rate. Values are presented as median (IQR).<br /> <strong>Results:</strong><br /> The number of PVCs during the procedure was 1 (0.153-1.62)/min. All patients in the study group (age 44 (26-62) years, 6 males) had diastolic potentials in the RVOT. The procedure time was 107 (84-132) min; mapping time was 30 (19-52) min; fluoroscopy time was 5.5 (4.3-13) min and RF time was 450 (336-675) sec. The number of points sampled per RVOT map in SR was 634 (450-830) and during the PVC was 24 (18-31), the area with diastolic potentials was 27 (18-68) mm<sup>2</sup> and the local activation time at the successful ablation site was 39 (44-49) ms before the beginning of the QRS. The acute success rate was 100%. None of the control group (median age 40 (33-65) years, 6 male) had diastolic potentials in the RVOT, the number of points sampled per RVOT map in SR was 250 (182-268).</p> <p><strong>Conclusion:</strong> In these group of patients with very low PVC burden during the procedure, this approach partially based on substrate mapping, made ablation of the PVCs feasible, in a fast and efficient way.</p>
Slides
Our mission: To reduce the burden of cardiovascular disease
Visit our site