Effects of Cardiac Resynchronization Therapy on Myocardial Perfusion Reserve
نویسندگان
چکیده
منابع مشابه
Effects of cardiac resynchronization therapy on myocardial perfusion reserve.
BACKGROUND Cardiac resynchronization therapy (CRT) is a relatively new treatment strategy for patients with heart failure and mechanical asynchrony. Reported effects of CRT on regional myocardial blood flow (MBF) are conflicting, and effects on hyperemic MBF are scarce. The aim of the present study was to assess serial changes of MBF and MBF reserve in patients receiving a biventricular pacemak...
متن کاملEnhancement of perfusion reserve by cardiac resynchronization therapy.
on larger ASD devices resulting in the appearance of migraine. Indeed, even macro-thrombi seem not to be so uncommon after device closure. Nevertheless, we do agree that (paradoxical) micro-emboli are generally distributed randomly. However, regional differences in cerebral arterial reactivity might be present and explain why diffuse micro-emboli can cause repeated lateralized signs. In additio...
متن کاملCardiac sympathetic reserve and response to cardiac resynchronization therapy.
BACKGROUND The objective of the present study was to investigate the effect of cardiac resynchronization therapy (CRT) on cardiac autonomic function. METHODS AND RESULTS This prospective study included 45 consecutive patients with heart failure who received CRT devices with defibrillator and 20 age-matched, healthy control subjects. At baseline and 3 months and 6 months after CRT, we assessed...
متن کاملMyocardial contractile reserve during exercise predicts left ventricular reverse remodelling after cardiac resynchronization therapy.
AIMS Lack of response to cardiac resynchronization therapy (CRT) may be due to the presence of significant amount of scar or fibrotic tissue at myocardial level. This study sought to investigate the potential impact of myocardial contractile reserve as assessed during exercise echocardiography on left ventricular (LV) reverse remodelling (decrease in LV end-systolic volume > or =15% after 6 mon...
متن کاملRegional myocardial contractile reserve assessed by strain echocardiography and the response to cardiac resynchronization therapy.
BACKGROUND Overall response rate to cardiac resynchronization therapy (CRT) is still not optimal. The aim of the study was to evaluate the influence of the regional myocardial contractile reserve during dobutamine infusion in the area of left ventricular (LV) electrode on the response rate and reverse remodeling LV in patients receiving CRT. METHODS Biventricular pacemaker was implanted in 41...
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ژورنال
عنوان ژورنال: Circulation
سال: 2004
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.0000138108.68719.c1