منابع مشابه
rognostic Significance of Quantitative QRS Duration
ACKGROUND: Although QRS duration is known to be a predictor of mortality in patients with left entricular dysfunction, our purpose was to evaluate the prognostic power of computer-measured QRS uration in a general medical population. ETHODS: Analyses were performed on the first electrocardiogram digitally recorded on 46,933 conecutive patients at the Palo Alto Veterans Affairs Medical Center be...
متن کاملPrognostic significance of QRS duration and morphology.
QRS duration and morphology, evaluated via a standard 12-lead electrocardiogram (ECG), represent an opportunity to derive useful prognostic information regarding the risk of subsequent cardiac events or therapeutic outcomes. Prolonged QRS duration, and the presence of intraventricular conduction abnormalities, usually indicate the presence of changes in the myocardium due to underlying heart di...
متن کاملDrug-induced QRS morphology and duration changes.
Drug-induced ECG changes may affect all components of the ECG curve. The attention of regulatory agencies, researchers and clinicians has been directed towards drug-induced QT-interval prolongation and its well-documented proarrhythmia. This presentation focuses on druginduced changes, i.e., morphology, amplitude and QRS complex duration (QRSd). A great variety of pharmacological agents (e.g., ...
متن کاملDifferential response to cardiac resynchronization therapy and clinical outcomes according to QRS morphology and QRS duration.
OBJECTIVES The goal of this study was to examine the relative impact of QRS morphology and duration in echocardiographic responses to cardiac resynchronization therapy (CRT) and clinical outcomes. BACKGROUND At least one-third of all patients treated with CRT fail to derive benefit. Patients without left bundle branch block (LBBB) or patients with smaller QRS duration (QRSd) respond less or n...
متن کاملQRS duration versus morphology and survival after cardiac resynchronization therapy
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...
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ژورنال
عنوان ژورنال: Coronary Artery Disease
سال: 2015
ISSN: 0954-6928
DOI: 10.1097/mca.0000000000000285