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1.
Heart Rhythm ; 16(9): e227-e279, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30412777
2.
Heart Rhythm ; 16(9): e128-e226, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30412778
3.
J Interv Card Electrophysiol ; 47(1): 11-18, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27020440

RESUMO

The Food and Drug Administration (FDA) is a large regulatory agency that monitors everything from food, tobacco, and veterinary medicine to pharmaceutical drugs and medical devices. The Mission statement of the CDRH, one of the Centers of the FDA, in its most succinct form is to protect and promote public health. This is accomplished through timely and continued access to safe, effective, and high quality medical devices. This paper aims to review the overarching principles of the Agency's review process for cardiac devices as well as highlight some of the newer programs that FDA has engaged in to facilitate innovation, device development, research, and timely market approval.


Assuntos
Aprovação de Equipamentos/normas , Técnicas Eletrofisiológicas Cardíacas/instrumentação , Técnicas Eletrofisiológicas Cardíacas/normas , Vigilância de Produtos Comercializados/normas , Avaliação da Tecnologia Biomédica/normas , United States Food and Drug Administration/normas , Aprovação de Equipamentos/legislação & jurisprudência , Guias como Assunto , Avaliação da Tecnologia Biomédica/legislação & jurisprudência , Estados Unidos
4.
Circ Arrhythm Electrophysiol ; 4(6): 851-7, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21956038

RESUMO

BACKGROUND: For patients with symptomatic New York Heart Association class III or IV, ejection fraction ≤ 35%, and QRS ≥ 130 ms, cardiac resynchronization therapy (CRT) has become an established treatment option. However, use of these implant criteria fails to result in clinical or echocardiographic improvement in 30% to 45% of CRT patients. METHODS AND RESULTS: The Predictors of Response to CRT (PROSPECT)-ECG is a substudy of the prospective observational PROSPECT trial. ECGs collected before, during, and after CRT implantation were analyzed. Primary outcomes were improvement in clinical composite score (CCS) and reduction of left ventricular end systolic volume (LVESV) of >15% after 6 months. Age, sex, cause of cardiomyopathy, myocardial infarction location, right ventricular function, mitral regurgitation, preimplantation QRS width, preimplantation PR interval, preimplantation right ventricular-paced QRS width, preimplantation axis categories, LV-paced QRS width, postimplantation axis categories, difference between biventricular (Bi-V) pacing and preimplantation QRS width, and QRS bundle branch morphological features were analyzed univariably in logistic regression models to predict outcomes. All significant predictors (α=0.1), age, and sex were used for multivariable analyses. Cardiomyopathy cause interaction and subanalyses were also performed. In multivariable analyses, only QRS left bundle branch morphological features predicted both CCS (odds ratio [OR]=2.46, P=0.02) and LVESV (OR=2.89, P=0.048) response. The difference between Bi-V and preimplantation QRS width predicted CCS improvement (OR=0.89, P=0.04). LV-paced QRS width predicted LVESV reduction (OR=0.86, P=0.01). Specifically, an LV-paced QRS width of ≤ 200 ms was predictive of nonischemic LVESV reduction (OR=5.12, P=0.01). CONCLUSIONS: Baseline left bundle branch QRS morphological features, LV-paced QRS width, and the difference between Bi-V and preimplantation QRS width can predict positive outcomes after CRT and may represent a novel intraprocedural method to optimize coronary sinus lead placement. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT00253357.


Assuntos
Estimulação Cardíaca Artificial , Terapia de Ressincronização Cardíaca , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/terapia , Função Ventricular Esquerda , Terapia de Ressincronização Cardíaca/efeitos adversos , Europa (Continente) , Feminino , Insuficiência Cardíaca/fisiopatologia , Hong Kong , Humanos , Modelos Logísticos , Masculino , Razão de Chances , Seleção de Pacientes , Valor Preditivo dos Testes , Estudos Prospectivos , Recuperação de Função Fisiológica , Medição de Risco , Fatores de Risco , Volume Sistólico , Fatores de Tempo , Resultado do Tratamento , Estados Unidos
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