نتایج جستجو برای: بلوک av
تعداد نتایج: 27719 فیلتر نتایج به سال:
Previous studies have demonstrated that the extracellular space (ECS) component of the atrioventricular (AV) node and His bundle region is larger than the ECS in adjacent contractile myocardium. The potential physiological significance of this observation was examined in a canine blood-perfused AV nodal preparation. Mannitol, an ECS osmotic expander, was infused directly into either the AV node...
Approval voting (AV) is a voting system in which voters can vote for, or approve of, as many candidates as they like in multicandidate elections. In 1987 and 1988, four scientific and engineering societies, collectively comprising several hundred thousand members, used AV for the first time. Since then, about half a dozen other societies have adopted AV. Usually its adoption was seriously debat...
BACKGROUND The atrial musculature in the cavotricuspid isthmus is a part of posterior inputs to the AV node. In patients with typical atrial flutter, effects of radiofrequency ablation of this isthmus on AV node conduction are still unknown. METHODS AND RESULTS This study included 16 patients with clinically documented typical atrial flutter. Group 1 had 8 patients without and group 2 had 8 p...
BACKGROUND To investigate whether an apoptotic process demonstrated by (99m)Tc-annexin-V ((99m)Tc-AV) uptake correlates with left ventricular remodeling (LVR) after myocardial infarction, we assessed (99m)Tc-AV uptake in rat model of myocardial ischemia and reperfusion. METHODS The left coronary artery (LCA) of 15 rats was occluded for 20 to 30 min, followed by reperfusion. After 2 weeks, (99...
Although there has been a great deal of recent empirical work and new theoretical interest in audio-visual perception of speech in both normal-hearing and hearing-impaired adults, relatively little is known about the development of these abilities and skills in deaf children with cochlear implants (CIs). This study examined the way in which children integrate visual speech cues available in the...
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