introduction: recent studies have shown acute cardioprotective effects of cyclosporine. the aim of the present study was to determine the protective role of cyclosporine on the model simulated the rotational nodal arrhythmia (avnrt) by using extracellular field potential recordings of isolated atrioventricular-node (av-node) of rabbit. methods: this study was performed on isolated double-perfus...

BACKGROUND Adenosine is well known to depress atrioventricular (AV) nodal conduction, but the potential interactions between adenosine and functional AV nodal properties have not been explored. The purpose of the present study was to determine (1) whether exogenous adenosine modifies the rate-dependent properties of the AV node, (2) to what extent such changes underlie the actions of adenosine ...

Argument visualisation (AV) tools enable structured debates around issues, positions and arguments. These tools have the potential to substantially improve transparency e.g. by enabling understanding complex legislation and debating. In this paper we present the results of the evaluation of an AV platform by experts and policy makers. The results suggest the potential of such tools is large par...

Satelliter är sofistikerade och därför komplicerade konstruktioner som kräver tvärvetenskapligt lagarbete mellan olika experter från olika akademiska discipliner. Integrationen av specifika nyttolastkomponenter, liksom vetenskapliga experiment, med inbyggd programvara för satelliter är mycket utmanande. Domänexperten, som ägare av nyttolastkomponenten, besitter detaljerade insikter om hans elle...

In this paper, we propose a new auxiliary-vector (AV) algorithm using the conjugate orthogonality for speech enhancement. When only a limited data record is available, the AV algorithm is the state-of-the-art for obtaining the minimumvariance-distortionless (MVDR) filter. However, the current AV algorithms suffer from convergence problems when applied to the speech enhancement. Based on the con...

To evaluate the role of perinodal tissue in the genesis of atrioventricular (AV) nodal reentry, echo beats were induced by programmed stimulation in nine superfused rabbit atrial-atrioventricular nodal preparations. In these preparations, extracellular bipolar electrograms were recorded simultaneously from the crista terminalis, interatrial septum arid His bundle, along with microelectrode acti...

The functional duration of vascular access in dialysis patients depends on the emergence of threatening complications. Discussions are constantly being held in an attempt to discover their causality and decrease their emergence. In 260 patients undergoing haemodialysis, we have studied the potential existence of a cause-and-effect relation between the emergence of complications in the vascular ...