In vivo biophysical characterization of very high power, short duration, temperature‐controlled lesions.
Introduction: A very high‐power short‐duration (vHPSD) strategy of radiofrequency (RF) ablation aims to minimize conductive heating and increase resistive heating. This study aimed to clarify the contribution of contact force (CF) and temperature and their interrelationship in making an adequate les...
| Published in: | Pacing & Clinical Electrophysiology Vol. 44; no. 10; pp. 1717 - 1724 |
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| Main Authors: | , , , , , , , |
| Format: | diagnostic images research tables/charts Journal Article |
| Published: |
Wiley-Blackwell
Oct2021
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=152842278&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 152842278 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01478389 4F8 jtl: Pacing & Clinical Electrophysiology issn: 01478389 maglogo: Y pubinfo: dt: Oct2021 vid: 44 iid: 10 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 152842278 152435566 152842278 152842278 10.1111/pace.14358 152842278 ppf: 1717 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: C – @attributes: type: P tig: atl: In vivo biophysical characterization of very high power, short duration, temperature‐controlled lesions. aug: au: Stabile, Giuseppe Schillaci, Vincenzo Strisciuglio, Teresa Arestia, Alberto Agresta, Alessia Shopova, Gergana De Simone, Antonio Solimene, Francesco affil: Clinica Montevergine, Mercogliano Avellino,, Italy sug: subj: Atrial Fibrillation Surgery Catheter Ablation Methods Treatment Duration Temperature Human Descriptive Statistics Pulmonary Veins Surgery Electric Impedance Multivariate Analysis ROC Curve ab: Introduction: A very high‐power short‐duration (vHPSD) strategy of radiofrequency (RF) ablation aims to minimize conductive heating and increase resistive heating. This study aimed to clarify the contribution of contact force (CF) and temperature and their interrelationship in making an adequate lesion with the vHPSD catheter. Methods: We enrolled 46 consecutive patients undergoing first catheter ablation for atrial fibrillation (AF). The vHPSD ablation was performed applying 90 W, for 4 s, with an irrigation of 8 ml/min. During an application, an impedance drop (ID) ≥10 Ω was regarded as an adequate lesion formation. Results: The mean procedural time was 95 ± 15 min. First‐pass isolation was reached in 89% of patients and at the end of the procedure all pulmonary veins were isolated. No steam pop nor procedural complication occurred. A total of 3829 qualified RF points were analyzed and the median values of ID, CF and maximum temperature were respectively 10.6 (IQR 8.6–13.1) Ohm, 9 (5.8–13.8) g, 46.8 (44.1–49.8) °C. The mean ID significantly increased in parallel with the increasing CF as well as with the increasing maximum temperature. In the multivariable analysis only the CF and the maximum temperature were independent predictors of ID. From receiver operating characteristic curve analysis, a CF of 8 g and a maximum temperature of 47°C are the optimal cutoff discriminatory value for adequate lesion formation. Conclusions: The vHPSD ablation is highly effective and safe. The CF and the maximum temperature are independent predictors of adequate lesion formation assessed by means of ID. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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