“Background: Current risk stratification after acute myocardial infarction (MI) depends on left ventricular Vorinostat ejection fraction. Microvolt T-wave alternans (MTWA) is one of promising markers to predict cardiac events in patients after acute MI treated according to current guidelines.
Methods: In this single center study, 112 consecutive patients with the first anterior ST-elevation MI undergoing PCI <12 hours from symptom onset, were enrolled prospectively. Demographics, established risk factors, myocardial contrast echocardiography (MCE) perfusion, index event data and MTWA were assessed. Composite cardiac events (CCE) defined as: death,
recurrent MI, sustained ventricular tachycardia (sVT) or readmission for acute heart failure (HF) were recorded during follow-up.
Results: MTWA test was negative in 76, positive in 18 and undetermined in 7 patients. MTWA negative patients had significantly higher LVEF at 30 days. At 4 years, 26 patients experienced CCE (10 died, 2 reinfarcted and 14 HF events). In multivariate Cox proportional hazard model maximum CKMB, non-negative MTWA and reduced LVEF made the best model to predict CCE. Four year CCE free survival was 77% and was
significantly lower for non-negative MTWA (94% vs 50%, p<0.003).
Conclusions: Non-negative MTWA with infarct size index and reduced LVEF could predict cardiac events in patients with anterior STEMI treated with primary PCI. MTWA non-negative Pfizer Licensed Compound Library order patients have significantly worse outcome.”
“Background: Cardiac resynchronization therapy (CRT) is an effective treatment of heart failure (HF) in presence of a depressed left ventricular (LV) ejection fraction and a wide
QRS complex. It is limited by a high proportion of nonresponders. Attempts have been made, in small studies, to increase the number of stimulation sites to optimize the resynchronization therapy. this website V-3 is a planned multicenter, randomized trial whose objective is to evaluate the clinical benefit conferred by the addition of a second LV lead in nonresponders after at least 6 months of standard biventricular stimulation.
Methods and Results: A total of 84 patients will be enrolled in 11 French medical centers. Patients will be randomly assigned to receive either an additional LV lead (test group) or to keep their current stimulation system unchanged (control group). Enrollment is planned to begin in March 2010 and is expected to end within I year. The primary study end point will be the HF clinical composite score evaluated at I year follow-up. Secondary end points include degree of echocardiographic reverse remodeling and changes in clinical measurements.
Conclusions: The V-3 trial will examine the clinical benefit conferred by the addition of a second LV lead in nonresponders to standard CRT.