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“Background: We aimed at evaluating the long-term effects of cardiac resynchronization therapy (CRT) in nonambulatory New York Heart Association (NYHA) IV heart failure
patients (NAIVHFP).
Methods: Eighteen patients, 15 men and three women, eight with ischemic and 10 with nonischemic cardiomyopathy, who underwent biventricular pacemaker implantation while they were in nonambulatory NYHA IV class, were studied. Patients’ age was 58 +/- 9 years and left ventricular ejection fraction (LVEF) 18 +/- 3%. Follow-up data were obtained through review of follow-up visits notes, stored echocardiographic studies, device interrogation data, and death certificates.
Results: After a mean duration of 1223 +/- 846 days, 11 patients were alive, including five patients who underwent heart transplantation (OCT) and seven dead. Three of 11 Pevonedistat research buy patients who received a CRT-defibrillator, experienced at least one appropriate discharge, but eventually they either died or received
an OCT during follow-up. Sustained improvements in NYHA class (Z = 2.4, P = 0.015) and 6-minute walk distance (0 vs 212 +/- 95 m, P +/- 0.001) were documented after a median duration of 855 days postimplantation. Cumulative proportion of death or OCT at 18 months-when full follow-up data were available-was 18%, which compared favorably with historical controls. Full echocardiographic and clinical follow-up data at 12-months postimplantation were available for 10 patients, documenting a significant reduction in end-systolic volume (248 +/- 82 vs 269 +/- 97 mL, P = 0.039).
Conclusions: CRT can be safely applied in this subset PCI-32765 cost of extreme severity heart failure patients, achieving encouraging survival rates and reverse remodeling effects. These observations can form an evidence-based rationale for including NAIVHFP in randomized CRT trials. (PACE 2011; 34: 1553-1560)”
“The magnetism of highly oriented selleck pyrolytic
graphite (HOPG) induced by 70 keV C-12(+) ion implantation was investigated by using electron spin resonance (ESR) and theoretical simulations of the electronic structure of defective graphite using spin-polarized density functional theory. The results indicate that defects produced by C-12(+) ion implantation can induce magnetic moments which are localized since a L1 line is observed at a fixed resonance field, independent of the angle between the field and the c axis of the HOPG sample. The angle and temperature dependence of the ESR spectra indicates that extrinsic carriers are induced in the implanted layer, and they may have an exchange interaction with local spins to produce a single asymmetric L1 line of the implanted sample. The consistent results given by the ESR spectra and the theoretical simulations of the electronic structure of defective graphite provide a clear explanation for the magnetic order in C-12(+) ion-implanted HOPG.
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