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1.
Europace ; 22(3): 450-495, 2020 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-31995197

RESUMO

Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.


Assuntos
Ablação por Cateter , Taquicardia Ventricular , Complexos Ventriculares Prematuros , Eletrofisiologia Cardíaca , Consenso , Humanos , Taquicardia Ventricular/diagnóstico , Taquicardia Ventricular/cirurgia
2.
Europace ; 21(8): 1143-1144, 2019 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-31075787

RESUMO

Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.


Assuntos
Eletrofisiologia Cardíaca , Ablação por Cateter , Técnicas Eletrofisiológicas Cardíacas/métodos , Taquicardia Ventricular , Complexos Ventriculares Prematuros , Eletrofisiologia Cardíaca/organização & administração , Eletrofisiologia Cardíaca/normas , Eletrofisiologia Cardíaca/tendências , Ablação por Cateter/instrumentação , Ablação por Cateter/métodos , Ablação por Cateter/normas , Consenso , Sistema de Condução Cardíaco/patologia , Sistema de Condução Cardíaco/fisiopatologia , Sistema de Condução Cardíaco/cirurgia , Cardiopatias/classificação , Cardiopatias/complicações , Humanos , Cooperação Internacional , Melhoria de Qualidade/organização & administração , Sociedades Médicas , Taquicardia Ventricular/diagnóstico , Taquicardia Ventricular/etiologia , Taquicardia Ventricular/fisiopatologia , Taquicardia Ventricular/cirurgia , Resultado do Tratamento , Complexos Ventriculares Prematuros/diagnóstico , Complexos Ventriculares Prematuros/etiologia , Complexos Ventriculares Prematuros/fisiopatologia , Complexos Ventriculares Prematuros/cirurgia
3.
J Card Fail ; 24(10): 716-718, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30248397

RESUMO

BACKGROUND: Despite cardiac resynchronization therapy (CRT), some patients with heart failure progress and undergo left ventricular assist device (LVAD) implantation. Management of CRT after LVAD implantation has not been well studied. The purpose of this study was to determine whether RV pacing or biventricular pacing measurably affects acute hemodynamics in patients with an LVAD and a CRT device. METHODS AND RESULTS: Seven patients with CRT and LVAD underwent right heart catheterization. Pressures and oximetry were measured and LVAD parameters were recorded during 3 different conditions: RV pacing alone, biventricular pacing, and intrinsic atrioventricular conduction. Paired t tests were used to evaluate changes within subjects. There were no significant changes in right atrial pressure, pulmonary arterial pressures, pulmonary capillary wedge pressure, cardiac index, or any LVAD parameter (P > .05). CONCLUSIONS: Our data suggest that CRT probably has no acute hemodynamic effect in patients with LVADs, but further study is needed.


Assuntos
Estimulação Cardíaca Artificial/métodos , Insuficiência Cardíaca/terapia , Coração Auxiliar , Hemodinâmica/fisiologia , Adulto , Idoso , Cateterismo Cardíaco , Feminino , Seguimentos , Insuficiência Cardíaca/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
14.
J Cardiovasc Electrophysiol ; 25(7): 747-53, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24612087

RESUMO

INTRODUCTION: Although several ECG criteria have been proposed for differentiating between left and right origins of idiopathic ventricular arrhythmias (VA) originating from the outflow tract (OT-VA), their accuracy and usefulness remain limited. This study was undertaken to develop a more accurate and useful ECG criterion for differentiating between left and right OT-VA origins. METHODS AND RESULTS: We studied OT-VAs with a left bundle branch block pattern and inferior axis QRS morphology in 207 patients who underwent successful catheter ablation in the right (RVOT; n = 154) or left ventricular outflow tract (LVOT; n = 53). The surface ECGs during the OT-VAs and during sinus beats were analyzed with an electronic caliper. The V2S/V3R index was defined as the S-wave amplitude in lead V2 divided by the R-wave amplitude in lead V3 during the OT-VA. The V2S/V3R index was significantly smaller for LVOT origins than RVOT origins (P < 0.001). The area under the curve (AUC) for the V2S/V3R index by a receiver operating characteristic analysis was 0.964, with a cut-off value of ≤1.5 predicting an LVOT origin with an 89% sensitivity and 94% specificity. In the AUC and accuracy, the V2S/V3R index was superior to any previously proposed ECG criteria in an analysis of all OT-VAs. This advantage of the V2S/V3R index over the V2 transition ratio and other indices also held true for a subanalysis of 77 OT-VAs with a lead V3 precordial transition. CONCLUSION: The V2S/V3R index outperformed other ECG criteria to differentiate left from right OT-VA origins independent of the site of the precordial transition.


Assuntos
Eletrocardiografia , Ventrículos do Coração/fisiopatologia , Taquicardia Ventricular/diagnóstico , Função Ventricular Esquerda , Função Ventricular Direita , Complexos Ventriculares Prematuros/diagnóstico , Complexos Ventriculares Prematuros/cirurgia , Adulto , Idoso , Área Sob a Curva , Ablação por Cateter , Diagnóstico Diferencial , Feminino , Ventrículos do Coração/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Curva ROC , Estudos Retrospectivos , Taquicardia Ventricular/etiologia , Taquicardia Ventricular/fisiopatologia , Taquicardia Ventricular/cirurgia , Resultado do Tratamento , Complexos Ventriculares Prematuros/etiologia , Complexos Ventriculares Prematuros/fisiopatologia
19.
J Cardiovasc Electrophysiol ; 24(10): 1186-8, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23631756

RESUMO

A 70-year-old man with atrial flutter (AFL) following pulmonary vein (PV) isolation (PVI) underwent electrophysiologic testing. The AFL exhibited positive P waves in the inferior leads and lead V1. Left atrial activation mapping revealed 2 remote sites with early activation that were located at the antrum of the left superior PV roof and the left inferior PV bottom. A single irrigated radiofrequency ablation targeting the earliest PV activation at the left PV carina eliminated the AFL. This case demonstrated that PV carina tachycardia with multiple conduction gaps and inter-PV conduction after PVI might mimic double focal atrial tachycardias.


Assuntos
Fibrilação Atrial/cirurgia , Flutter Atrial/etiologia , Ablação por Cateter/efeitos adversos , Veias Pulmonares/cirurgia , Potenciais de Ação , Idoso , Fibrilação Atrial/diagnóstico , Fibrilação Atrial/fisiopatologia , Flutter Atrial/diagnóstico , Flutter Atrial/fisiopatologia , Flutter Atrial/cirurgia , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas , Humanos , Masculino , Veias Pulmonares/fisiopatologia , Reoperação , Fatores de Tempo , Resultado do Tratamento
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