taxol is used to treatment of variety cancers including ovarian, breast, lung, head and neck carcinomas and the aids-related karposi’s carcinoma, and was originally obtained from bark of taxus brevifolia. however the amount of extracted taxol from taxus is extremely low and cannot be considered as a suitable commercial source and it has led to studies for finding new sources of taxol. in 1998, ...

There is no consensus oti the effect of slow pathway ablation on the electrophysiologic properties of the fast pathway in patients with AV ncxial reentrant tachycardia. Some investigators have demonstrated that ahlation of the slow pathway results In shortening of the fast pathway effective refractory period, while other investigators have not made this observation.' '̂ In the setting of sympath...

1 wo previous reports have demonstrated dual AV nodal pathways as the causative mechanism of spontaneous SVT termination in the WPW syndrome. Westveer et al’ reported a patient with WPW and non-sustained antidromic SVT, where SVT termination was related to retrograde dual AV nodal pathways. Retrograde conduction of the SVT occurred over the slow retrograde AV nodal pathway with concealment into...

INTRODUCTION The purpose of this study was to prospectively compare the effects of complete and partial ablation of slow pathway function on the fast pathway effective refractory period (ERP). METHODS AND RESULTS The subjects were 20 patients (mean age 43 +/- 13 years) with atrioventricular nodal reentrant tachycardia (AVNRT), no structural heart disease, and easily inducible AVNRT. Autonomic...

av-node modification by catheter rf energy delivery is treatment of choice in the symptomatic patients with avnrt. this study included 30 patients with avnrt (19 women, 11 men). we did slow pathway ablation in 29 cases successfully. maximum effective energy delivery was 40 watts for 40 msec. 1:1 av conduction increased from 290±40 msec before ablation to 340±65 msec after ablation. also av-node...

In a remarkable series of experiments, the late Gordon Moe and his colleagues1 hypothesized the existence of dual atrioventricular nodal pathways to explain atrioventricular nodal echo complexes elicited in a rabbit model. They postulated existence of an antegrade slow conducting pathway with a shorter refractory period compared with a fast conducting pathway. Thus, premature impulses that bloc...