Login
Search
Search
0 Dates
2025
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
CPC 2025
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
Outcomes after implantation of Subcutaneous-Implantable cardioverter defibrillators (S-ICDs) for Secondary Prevention
Session:
SESSÃO DE POSTERS 42 - DISPOSITIVOS CARDÍACOS IMPLANTÁVEIS: CDI E CRT
Speaker:
Rita Amador
Congress:
CPC 2025
Topic:
C. Arrhythmias and Device Therapy
Theme:
09. Device Therapy
Subtheme:
09.2 Implantable Cardioverter / Defibrillator
Session Type:
Cartazes
FP Number:
---
Authors:
Rita Amador; Joana Certo Pereira; Daniel Matos; Gustavo Rodrigues; João Carmo; Isabel Santos; Francisco Moscoso Costa; Pedro Galvão Santos; Pedro Carmo; Francisco Morgado; Diogo Cavaco; Pedro Adragão
Abstract
<p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Aptos,sans-serif"><strong>Background </strong><br /> Implantable cardioverter defibrillators (ICDs) are the gold standard therapy for sudden cardiac death (SCD) prevention. However, transvenous ICDs carry long-term risks, one of them being lead-related complications. Subcutaneous ICDs (S-ICDs) have emerged as a promising alternative, but data on their use in secondary prevention of SCD is limited. This study aims to evaluate the outcomes of patients receiving S-ICDs for secondary prevention at a single tertiary center.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Aptos,sans-serif"><strong>Methods</strong><br /> A retrospective, observational study was conducted on patients implanted with S-ICDs for secondary prevention of SCD. Patients were followed at a specialized ICD center. Data on appropriate and inappropriate therapies and efficacy and safety outcomes were collected through the latest device follow-up. </span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Aptos,sans-serif"><strong>Results</strong><br /> A total of 77 patients (mean age 41 ± 17 years, 74% male) received S-ICDs for secondary prevention from 2010 to 2024. Mean left ventricular ejection fraction (LVEF) was 54 ± 11%. Three patients (4.4%) who survived SCD had an LVEF below 35%, and 14% had a prior transvenous ICD. Arrhythmic substrate aetiologies are shown in Figure 1a.<br /> Over a median follow-up of 47 months (IQR 17–72), 31 patients (40%) experienced shocks. The incidence of appropriate shocks was 14% at 1 year and 17% at 2 years (Figure 1b), substantially lower than reported in previous series. This difference may reflect advancements in medical therapy, rigorous patient selection for S-ICDs and more permissive programming. Inappropriate shocks occurred in 10% at 1 year and 14% at 2 years, often due to T-wave oversensing (22%) or noise (39%). These cases were reviewed, and device vector optimization reduced recurrence, with only two patients receiving additional inappropriate shocks post-adjustment. Four patients transitioned to conventional ICDs due to electrode dysfunction (n=3) or pocket infection (n=1). One patient had the S-ICD system explanted and later reimplanted following successful infection management. A total of 3 cardiovascular deaths occurred, one due to SCD.</span></span></p> <p style="text-align:justify"><span style="font-size:11pt"><span style="font-family:Aptos,sans-serif"><strong>Conclusions</strong><br /> S-ICDs appear to be a viable alternative to transvenous ICDs for secondary prevention, with good efficacy and safety, potentially reducing long-term complications traditionally associated with transvenous ICD. Future studies should refine candidate selection criteria and strategies to minimize inappropriate therapies.</span></span></p>
Slides
Our mission: To reduce the burden of cardiovascular disease
Visit our site