(Abstract) J Am Coll Cardiol1998 31:159Aīagotzky VS. The use of bio-battery cell output to predict lesion formation and prevent rapid impedance rise.
Bio-battery to monitor temperature during radiofrequency energy application. (Abstract) J Am Coll Cardiol 1997 29:32A. In vivo experiments of radiofrequency (RF) energy application using biobattery-induced temperature monitoring. Temperature monitoring during RF energy application without the use of thermistors or thermocouples. He DS, Sharma P, Marcus FI, Lampe L, Taylor J, Acker LC. Assessment of effects of a radiofrequency energy field and thermistor location in an electrode catheter on the accuracy of temperature measurement. Observation on electrode-tissue interface temperature and effect on electrical impedance during radiofrequency ablation of ventricular myocardium. Temperature monitoring during radiofrequency catheter ablation of accessory pathways. Langberg JJ, Calkins H, El-Attasi R, et al. Radiofrequency coagulation of ventricular myocardium: Improved prediction of lesion size by monitoring catheter tip temperature. Hindricks G, Haverkamp W, Gulker H, et al. Radiofrequency catheter ablation of idiopathic left ventricular tachycardia guided by a Purkinje potential. Nakagawa H, Beckman KJ, McClelland JH, et al. Radiofrequency catheter ablation of ventricular tachycardia in patients without structural heart disease. Klein LS, Shih H, Hackett FK, Zipes DP, Miles WM. Selective transcatheter ablation of the fast and slow pathways using radiofrequency energy in patients with atrioventricular nodal reentry tachycardia. Evidence for involvement of perinodal myocardium within the reentrant circuit. Selective radiofrequency ablation of the slow pathway for the treatment of atrioventricular nodal reentrant tachycardia. Treatment of supraventricular tachycardia due to atrioventricular nodal reentry by radiofrequency catheter ablation of slow pathway conduction. Jackman WM, Beckman KJ, McClelland JH, et al. Catheter modification of the atrioventricular junction with radiofrequency energy for control of atrioventricular nodal reentry tachycardia. Curative percutaneous catheter ablation using radiofrequency energy for accessory pathways in all locations: Results in 100 consecutive patients. Radiofrequency current catheter ablation of accessory atrioventricular pathways. Kuck KH, Schluter M, Geigrer M, Siebels J, Duckeck W. Diagnosis and cure of the Wolff-Parkinson-White syndrome or paroxysmal supraventricular tachycardias during a single electrophysiology test. Catheter ablation of accessory AV pathways (Wolff-Parkinson-White Syndrome) by radiofrequency current. The bio-battery signal provides a unique marker that might be useful to obtain maximum lesion depth while avoiding rapid impedance rise. When RF energy was terminated at the rapid impedance rise the lesions were similar in depth, 8.2☐.9 mm, to those obtained when RF energy was stopped at the “bump” (p = 0.28).
Conclusion: The depth of lesions created at the “bump” point was almost two fold deeper than those at the termination points of 20, 40 and 60% bio-battery decrease (p = 0.0001). This “bump” occurred before a rapid impedance rise.
When RF energy application was terminated later, at a point characterized by a brief change of slope of the bio-battery signal, the lesions measured 7.8☑.4 mm in depth. Results: When 50 volts of constant RF energy was terminated at a 20, 40, or 60% decline from the maximum bio-battery signal, the lesion depth was 4☐.4 mm. A copper return plate was placed in the bath. RF energy, electrode temperature, bio-battery signal and tissue impedance were displayed and recorded.
SIGNAL DJ FRESH DOWNLOAD GENERATOR
RF energy was delivered with a custom generator to a catheter electrode. Methods: Fresh bovine ventricular myocardium was immersed in a temperature-controlled bath of circulating blood. Aims: The aim of this study was to determine if the bio-battery signal can predict myocardial lesion formation and depth.
0 kommentar(er)
