Radioimmunoassays were used to measure the concentration changes of plasma endothelin(ET) and atrial natriuretic peptide(ANP) during the onset and after termination of paroxysmal supraventricular tachycardia(SVT). 30 ...Radioimmunoassays were used to measure the concentration changes of plasma endothelin(ET) and atrial natriuretic peptide(ANP) during the onset and after termination of paroxysmal supraventricular tachycardia(SVT). 30 cases were reviewed and compansons with 42 normal subjects were made. There are very significant differences(P<0.0001) in the concentration changes of both plasma ET and ANP during the onset and 30 minutes after the termination of SVT. During the onset period of SVT. the plasma ET and ANP were markedly elevated and 30 minutes after its termination they were lowered significantly, but their concentrations were still 2-fold higher than ihose of the control group. As the biological effects of ANP and ET are antagonistic to each other. their parallel elevation and lowering of plasma concentrations during and.after the termination of SVT reveal that these 2 hormones parucipate in the pathophysiological process of SVT. This phenomenon is possibly one of the homeostatic regulatory functions in the organism.展开更多
This paper presents our experience with radioreqencey ablation (RFA) for idiopathic ventricular tachycardia (VT) arising from right ventricle in 12 patients (pts.). The age range of patients was 21-50, with a mean of ...This paper presents our experience with radioreqencey ablation (RFA) for idiopathic ventricular tachycardia (VT) arising from right ventricle in 12 patients (pts.). The age range of patients was 21-50, with a mean of 38.5 years. Ten out of 12 were females, 1 patient had candia failure due to almost incessant VT while the rest had normal left ventricular function. Twelve pts had VT arising from the right ventricle; of those, 9 were from the outflow truct, 2 from the RV apex, and 1 from the RV inflow. In all pts the diagnostic study and therapeutic RFA were combined in a single procedure. Pacemapping and local activition time were used to guide the site of RFA in pts with VT arising from the right ventricle. RFA was successful in 11 of the 12 pts(91 % ). Number of RF applications were 1 -27, mean 9. 6;fluo- roscopy time were 4-75, mean 26. 9 minutes. RFA for idiopathic RV has a high success rate. This mode of treatment should be considered as a nonpharmacological curative treatment for symptomatic pts.展开更多
文摘Radioimmunoassays were used to measure the concentration changes of plasma endothelin(ET) and atrial natriuretic peptide(ANP) during the onset and after termination of paroxysmal supraventricular tachycardia(SVT). 30 cases were reviewed and compansons with 42 normal subjects were made. There are very significant differences(P<0.0001) in the concentration changes of both plasma ET and ANP during the onset and 30 minutes after the termination of SVT. During the onset period of SVT. the plasma ET and ANP were markedly elevated and 30 minutes after its termination they were lowered significantly, but their concentrations were still 2-fold higher than ihose of the control group. As the biological effects of ANP and ET are antagonistic to each other. their parallel elevation and lowering of plasma concentrations during and.after the termination of SVT reveal that these 2 hormones parucipate in the pathophysiological process of SVT. This phenomenon is possibly one of the homeostatic regulatory functions in the organism.
文摘This paper presents our experience with radioreqencey ablation (RFA) for idiopathic ventricular tachycardia (VT) arising from right ventricle in 12 patients (pts.). The age range of patients was 21-50, with a mean of 38.5 years. Ten out of 12 were females, 1 patient had candia failure due to almost incessant VT while the rest had normal left ventricular function. Twelve pts had VT arising from the right ventricle; of those, 9 were from the outflow truct, 2 from the RV apex, and 1 from the RV inflow. In all pts the diagnostic study and therapeutic RFA were combined in a single procedure. Pacemapping and local activition time were used to guide the site of RFA in pts with VT arising from the right ventricle. RFA was successful in 11 of the 12 pts(91 % ). Number of RF applications were 1 -27, mean 9. 6;fluo- roscopy time were 4-75, mean 26. 9 minutes. RFA for idiopathic RV has a high success rate. This mode of treatment should be considered as a nonpharmacological curative treatment for symptomatic pts.
