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Titolo:
SIGNIFICANCE OF TEMPERATURE-GUIDED ENERGY APPLICATION DURING RADIOFREQUENCY CATHETER ABLATION OF ACCESSORY PATHWAYS
Autore:
KOTTKAMP H; HINDRICKS G; CHEN X; WILLEMS S; BREITHARDT G; BORGGREFE M;
Indirizzi:
UNIV MUNSTER,MED KLIN & POLIKLIN,ALBERT SCHWEITZER STR 33 D-45129 MUNSTER GERMANY UNIV MUNSTER,INST ARTERIOSKLEROSEFORSCH,BEREICH KORONARE HERZKRANKHEIT W-4400 MUNSTER GERMANY
Titolo Testata:
Zeitschrift fur Kardiologie
fascicolo: 8, volume: 83, anno: 1994,
pagine: 577 - 581
SICI:
0300-5860(1994)83:8<577:SOTEAD>2.0.ZU;2-B
Fonte:
ISI
Lingua:
GER
Soggetto:
PARKINSON-WHITE SYNDROME; ATRIOVENTRICULAR PATHWAYS; VENTRICULAR MYOCARDIUM; COAGULATION;
Keywords:
RADIOFREQUENCY CATHETER ABLATION; WPW SYNDROME; CONCEALED ACCESSORY PATHWAYS; TEMPERATURE MONITORING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
H. Kottkamp et al., "SIGNIFICANCE OF TEMPERATURE-GUIDED ENERGY APPLICATION DURING RADIOFREQUENCY CATHETER ABLATION OF ACCESSORY PATHWAYS", Zeitschrift fur Kardiologie, 83(8), 1994, pp. 577-581

Abstract

Radiofrequency catheter ablation has become an established treatment modality for definite cure of patients with WPW-syndrome or concealed accessory pathways. On-line monitoring of the induced tissue effects plays an important role concerning the efficacy and safety of this procedure. In a 50 year-old man with recurrent atrioventricular tachycardia, endocardial catheter mapping revealed a left anterolateral concealed accessory pathway. A temperature-guided radiofrequency pulse with a preselected temperature of 70 degrees C was applied during tachycardiawhen stability of the local electrogram, continuous ventriculoatrial activity during orthodromic tachycardia, and registration of a Kent-potential indicated electrogram criteria for a successful ablation. However, orthodromic tachycardia did not terminate, and catheter tip temperature only reached a plateau of 45 degrees C with maximal power output of 50 watts indicating an insufficient catheter tip-tissue-contact. Therefore, the bending of the catheter curve was slighly straightened during energy application without pushing the catheter forward in order to achieve a better tip electrode contact with the tissue. Simultaneously, a sudden increase in catheter tip temperature was observed accompanied by termination of the tachycardia indicative of the successfulablation of the accessory pathway. At present, a control of radiofrequency catheter induced tissue effects can be best achieved by temperature-guided energy application whereas monitoring of current, voltage, and impedance are insufficient in this respect. In the present case, correction of the catheter placement during energy application could beachieved because of the on-line monitoring of the catheter tip temperature thereby allowing successful ablation of the accessory pathway with a single radiofrequency pulse.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 07:48:47