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
Best voltage threshold to localize ablation targets in patients with ventricular tachycardia using rhythmia mapping system
Session:
CO 01 - Arritmologia Invasiva
Speaker:
Pedro Carmo
Congress:
CPC 2018
Topic:
C. Arrhythmias and Device Therapy
Theme:
08. Ventricular Arrhythmias and Sudden Cardiac Death (SCD)
Subtheme:
08.4 Ventricular Arrhythmias and SCD - Treatment
Session Type:
Comunicações Orais
FP Number:
---
Authors:
Pedro Lopes Do Carmo; Francisco Bello Morgado; Pedro Adragão; Diogo Cavaco; Francisco Moscoso Costa; Miguel Mendes
Abstract
<p>Introduction:<br /> Accurate mapping of reentrant scar-related ventricular tachycardia (VT) allows efficient radiofrequency ablation. We aimed to assess the correlation between electrophysiological findings in patients with ischemic VT and bipolar maps using different voltage cutoff values.</p> <p>Methods:<br /> We studied 23 patients (age 66 ± 16 years, 2 females) submitted to VT ablation using Rhythmia mapping system and Intella-Orion catheter.</p> <p>In all patients a bipolar voltage map was constructed during right ventricular pacing. Ablation was guided by activation and entrainment mapping in hemodynamically stable VTs and by pace-mapping and abnormal potentials in unstable VTs. Subsequently, the activation and bipolar voltage maps were analyzed off-line using cutoffs of 0,01mV, 0,03mV, 0,05mV, 0,1mV and 0,2mV.</p> <p>Results:<br /> A total of 15 sustained VTs were induced. In 2 pts the VT has origin in the right ventricle.</p> <p>The percentage of scare area was depended of the voltage cutoffs. It was 0,23cm2, 2,4cm2, 4,6cm2, 11,5cm2, and 18,7cm2, respectively according to the crescent voltage value.</p> <p>The percentage of VT cycle included in the map was depended of the voltage cutoffs. It was 90,5%, 81,8%, 77,2%, 69%, and 50%, respectively according to the crescent voltage value.</p> <p>All isthmuses are located in areas of scare defined by the highest voltage cutoff.</p> <p>Conclusions:<br /> A very low voltage cutoff is fundamental for the identification of the mechanisms of ventricular tachycardia and of the targets for ablation.</p>
Slides
Our mission: To reduce the burden of cardiovascular disease
Visit our site