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Curso de Atualização em Medicina Cardiovascular 2019
Reunião Anual Conjunta dos Grupos de Estudo de Cirurgia Cardíaca, Doenças Valvulares e Ecocardiografia da SPC
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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
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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
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ECGi Takes the Lead - A Game Changer in Idiopathic Ventricular Tachycardia Ablation
Session:
Sessão de Posters 37 - Estratégias avançadas em arritmias ventriculares e ablação
Speaker:
Daniel Inácio Cazeiro
Congress:
CPC 2026
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:
Posters Eletrónicos
FP Number:
---
Authors:
Daniel Inácio Cazeiro; Diogo Ferreira; Marta Vilela; João Cravo; Yu Wang; Ana Bernardes; Joana Brito; Afonso Nunes Ferreira; Gustavo Lima da Silva; Nuno Cortez-Dias; Fausto J. Pinto; João de Sousa
Abstract
<p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000"><strong>Introduction</strong></span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">: </span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">Precise localization of arrhythmogenic foci is critical for the success of radiofrequency catheter ablation (RCA) in patients with premature ventricular contractions (PVCs) or idiopathic ventricular tachyarrhythmias (IVT). Reliable preprocedural tools that aid localization are therefore of significant clinical interest. </span></span></span></p> <p style="text-align:justify"> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000"><strong>Aim</strong></span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">: </span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">To evaluate the diagnostic accuracy of electrocardiographic imaging (ECGi) compared with conventional 12-lead ECG in identifying the site of origin of IVTs.</span></span></span></p> <p style="text-align:justify"> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000"><strong>Methods: </strong></span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">In this retrospective, single centre study, consecutive patients undergoing RCA for PVCs or ITVs were included. All patients underwent 12-lead ECG, and 32% also underwent ECGi with a 252-electrode vest and thoracic CT scan (CardioInsight®). ECG locations from 12 lead recordings were interpreted by both arrhythmologists and nonarrhythmologists. For ECGi, the earliest activated site was considered the arrhythmia origin. Electrophysiology (EP) study with successful ablation defined the reference standard.</span></span></span></p> <p style="text-align:justify"> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000"><strong>Results: </strong></span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">Thirty-seven patients were analyzed (mean age 53 ± 14.6 years, 45.9% male). Compared with 12-lead ECG, ECGi demonstrated superior sensitivity (90.9% vs. 56.9%), specificity (99.4% vs. 97.1%), and overall diagnostic accuracy (98.9% vs. 94.6%; all p=0.025). Furthermore, ECGi use was associated with significantly shorter EP procedure times (92.1 ± 23.3 vs. 157.9 ± 62.5 minutes; p < 0.05). </span></span></span></p> <p style="text-align:justify"> </p> <p style="text-align:justify"><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000"><strong>Conclusion</strong></span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">: </span></span></span><span style="font-size:12pt"><span style="font-family:Aptos"><span style="color:#000000">ECGi provided more accurate localization of arrhythmia origins than conventional 12-lead ECG and was associated with shorter procedure times. Incorporating ECGi into pre-procedural planning may improve efficiency and outcomes in RCA.</span></span></span></p>
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