نتایج جستجو برای: lbbb
تعداد نتایج: 733 فیلتر نتایج به سال:
Background and purpose: The most usual way for diagnosing left ventricular systolic dysfunction (LVSD) is Ëchocardiography. We designed this propective study for evaluating the rate of association of left bundle branch block (LBBB) with LVSD(ËF< 50%). Materials and methods: Ôut of 2522 Patients admitted to the cardiology ward in Tmam Khomeini Hospital, 215 Patients had LBBB, of whom 200 pa...
OBJECTIVE To assess the utility of left bundle branch block (LBBB) as an activation criterion for primary percutaneous coronary intervention (PPCI). DESIGN Retrospective observational cohort study. SETTING Single UK heart attack centre. PATIENTS Consecutive patients referred for PPCI September 2008-December 2011 (n=2192). INTERVENTIONS Demographic and outcome data were obtained by revie...
BACKGROUND Conduction disturbances are relatively common after transcatheter aortic valve implantation. Previous data demonstrated an adverse impact of persistent left bundle-branch block (LBBB) after surgical aortic valve replacement. It is unclear whether new-onset LBBB may also impact the prognosis of patients after transcatheter aortic valve implantation. METHODS AND RESULTS Among 1060 pa...
introduction: we aimed to investigate of effect of left bundle branch block (lbbb) on perfusion and functional parameters in dipyridamole tc99m-mibi gated myocardial perfusion spect which may be helpful in interpretation of myocardial perfusion imaging. methods: we studied 70 patients with low pre-test probability of coronary artery disease in two groups: 35 patients with lbbb and 35 subjects...
Given its broad use as a screening tool, the electrocardiogram (ECG) has largely become one of the most common diagnostic tests performed in routine clinical practice. As a result, the finding of left bundle-branch block (LBBB) in the absence of a well-defined clinical setting has become relatively frequent and raises questions and often concerns. While in the absence of clinically detectable h...
We describe a 66-year-old woman who had an alternating bundle branch block consisting of coexisting occurrence of right bundle branch block (RBBB) and left bundle branch block (LBBB) combined with Mobitz type II atrioventricular block (AVB). A prolonged PQ interval was associated with the RBBB pattern whereas it was not apparent in the LBBB pattern. Electrophysiologic study revealed that the LB...
AIMS The prognostic implications of QRS duration and morphology in heart failure patients treated with cardiac resynchronization therapy (CRT) remains debated. The present evaluation investigated the association between QRS duration (<150 vs. ≥150 ms) and QRS morphology (left bundle brand block [LBBB] vs. non-LBBB) and long-term prognosis of a large cohort of unselected heart failure patients t...
To examine the nature of the first heart sound in left bundle branch block (LBBB), 26 patients with LBBB were studied using echophonocardiography. Apexcardiograms and systolic time intervals were also obtained from these patients and the results were compared with 20 normal subjects. Mitral closure preceded tricuspid closure by 0.02-0.04 second in 19 of the 20 normal subjects. In contrast, in s...
BACKGROUND Left bundle-branch block (LBBB) and the presence of systolic dysfunction are the major indications for cardiac resynchronization therapy (CRT). Mechanical ventricular dyssynchrony on echocardiography can help identify patients responsive to CRT. Left bundle-branch block can have different morphologic patterns. OBJECTIVE To compare the prevalence of mechanical dyssynchrony in differ...
AIMS Left bundle branch block (LBBB) creates considerable regional differences in mechanical load within the left ventricle (LV). We investigated expression of selected microRNAs (miRs) in relation to regional hypertrophy and fibrosis in LBBB hearts and their reversibility upon cardiac resynchronization therapy (CRT). METHODS AND RESULTS Eighteen dogs were followed for 4 months after inductio...
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