"Hyper-response" evaluated by 3D echocardiography after cardiac resynchronization therapy.
نویسندگان
چکیده
Cardiac resynchronization therapy consists of a promising treatment for patients with severe heart failure, but about 30% of patients do not exhibit clinical improvement with this procedure. However, approximately 10% of patients undergoing this therapy may have hyperresponsiveness, and three-dimensional echocardiography can provide an interesting option for the selection and evaluation of such patients.
منابع مشابه
Abnormal diastolic function underlies the different beneficial effects of cardiac resynchronization therapy on ischemic and non-ischemic cardiomyopathy
OBJECTIVES: To investigate the association between diastolic function and the different beneficial effects of cardiac resynchronization therapy in patients with heart failure due to different causes. METHODS: The 104 enrolled patients were divided into an ischemic cardiomyopathy group (n=27) and a non-ischemic cardiomyopathy group (n=77) according to the cause of heart failure. Before implant...
متن کامل[Mechanism of cardiac resynchronization therapy by real-time three-dimensional echocardiography in patients with heart failure].
We report the case of a 66-year-old man with heart failure NYHA class IV treated with biventricular pacing for cardiac resynchronization. The patient was evaluated by real-time three-dimensional transthoracic echocardiography before and 48 hours after pacemaker implantation. The use of three-dimensional echocardiography contributed to understanding the underlying mechanism involved in cardiac r...
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Background. Currently there are no reliable predictors of response to cardiac resynchronization therapy (CRT) before implantation. We compared pre-CRT left ventricular (LV) dyssynchrony by tissue Doppler imaging (TDI) and regional volumetric analysis by 3-dimensional transthoracic echocardiography (3DTTE) in predicting response to CRT. Methods. Thirty-eight patients (79% nonischemic cardiomyopa...
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Cardiac resynchronization therapy improves clinical symptoms and prognosis of heart failure patients. However, it has been shown that up to 40% of patients do not respond to this therapy. Three main determinants of cardiac resynchronization therapy response have been identified: left ventricular dyssynchrony, left ventricular lead position, and extent and location of myocardial scar tissue. Two...
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Correspondência: Vera Marcia Gimenes • Rua Coronel Oscar Porto, 569/31 – Paraíso 04003-002 São Paulo, SP, Brasil E-mail: [email protected], [email protected] Artigo recebido em 24/08/11, revisão recebido em 24/08/11, aceito em 24/08/11. A Terapia de Ressincronização Cardíaca (TRC) tem se mostrado eficaz concomitantemente ao tratamento com fármacos convencionais em pacientes refratários aos tratam...
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ورودعنوان ژورنال:
- Arquivos brasileiros de cardiologia
دوره 96 6 شماره
صفحات -
تاریخ انتشار 2011