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OBJECTIVES We aimed to assess a novel measure of left ventricular (LV) dyssynchrony, a cardiovascular magnetic resonance-tissue synchronization index (CMR-TSI), in patients with heart failure (HF). A further aim was to determine whether CMR-TSI predicts mortality and major cardiovascular events (MCE) after cardiac resynchronization therapy (CRT). (More)
OBJECTIVES This study was designed to determine whether cardiac resynchronization therapy (CRT) by means of biventricular pacing (BiVP) alters the QT interval (QT(c)) and QT dispersion (QTD), and whether such changes relate to the risk of developing major arrhythmic events (MAE). BACKGROUND Prolonged QT(c) is associated with MAE. Left ventricular pacing(More)
This paper describes the instruction cache unit (ICU) of the IBM POWER2'" processor, with emphasis on improvements over the original POWER ICU design. The POWER2 ICU incorporates a new compare-branch scheme that minimizes processing time penalties, a second branch processor, increased branch look-ahead capability, and doubled instruction-fetch and(More)
BACKGROUND Observational echocardiographic studies have suggested that pre-implant dyssynchrony is required for a response to cardiac resynchronization therapy. Some clinical guidelines on CRT have adopted dyssynchrony as a requirement prior to CRT. AIMS To assess the effects of CRT in patients with heart failure who are unselected for mechanical(More)
Acute aortic dissection is an important differential diagnosis to exclude in the emergency presentation of patients with acute chest pain. Misdiagnosis can be fatal if treatment with antithrombotic agents (for presumed acute coronary syndrome) is administered. We present a series of two patients who presented to our center with acute DeBakey Type III (or(More)
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