{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,18]],"date-time":"2026-04-18T04:35:38Z","timestamp":1776486938326,"version":"3.51.2"},"reference-count":22,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"21","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2018,11,6]]},"abstract":"<jats:sec xml:lang=\"en\">\n            <jats:title>Background<\/jats:title>\n            <jats:p xml:lang=\"en\">Mapping using a multipolar catheter with small and closely spaced electrodes has been shown to improve the validity of electrograms to identify endocardial critical sites of reentry isthmus and foci of earliest activation. However, the feasibility, safety, and clinical outcome of using such technology to guide epicardial ventricular tachycardia (VT) ablation has not been reported.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Methods and Results<\/jats:title>\n            <jats:p xml:lang=\"en\">Thirty\u2010three consecutive patients from 5 high\u2010volume centers were studied. These patients had 43 epicardial maps using a novel 64\u2010pole mini\u2010basket catheter to guide VT ablation. Activation maps with 17\u00a0832 points per map (interquartile range: 7621\u201332\u00a0497 points per map) were acquired in 11 patients with tolerated VT (7 focal, 4 reentry). Substrate maps with 40149 points per map (interquartile range: 20926\u201349391 points per map) were acquired in 30 patients. Local abnormal ventricular activities were consistently demonstrated at the substrate regions of interest. Epicardial ablation was performed in 31 of 33 patients, with acute VT termination in 10 of 11 patients (91%). Complete elimination of local abnormal ventricular activities was achieved in 25 of 31 patients. At a median follow\u2010up of 10 months (interquartile range: 4\u201314 months), 64% (7\/11) of patients who had acute termination of VT and 55% (11\/20) of those who had substrate modification alone were free of VT. There was no immediate complication following epicardial procedure.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p xml:lang=\"en\">Epicardial VT ablation guided by a mini\u2010basket catheter is feasible and safe. Complete reentry VT circuits and foci of earliest activation were identified in all inducible stable VT. The longer term clinical outcome of ablation guided by this novel mapping technology utilizing small and closely spaced electrodes will have to be determined with a larger study.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/jaha.118.010549","type":"journal-article","created":{"date-parts":[[2018,10,30]],"date-time":"2018-10-30T09:07:25Z","timestamp":1540890445000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Epicardial Ventricular Tachycardia Ablation Guided by a Novel High\u2010Resolution Contact Mapping System: A Multicenter Study"],"prefix":"10.1161","volume":"7","author":[{"given":"Rui","family":"Shi","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine The First Affiliated Hospital of Xi'an Jiaotong University Xi'an China"},{"name":"Heart Rhythm Centre The Royal Brompton and Harefield NHS Foundation Trust National Heart and Lung Institute Imperial College London United 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Laboratories San Raffaele University Hospital Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Caterina","family":"Bisceglia","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit and Electrophysiology Laboratories San Raffaele University Hospital Milan Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ruairidh","family":"Martin","sequence":"additional","affiliation":[{"name":"Bordeaux University Hospital LIRYC Institute INSERM 1045 Bordeaux University Bordeaux France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Meyer","sequence":"additional","affiliation":[{"name":"Department of Cardiology Electrophysiology cNEP Cardiac Neuro and Electrophysiology research group University Heart Centre University Hospital Hamburg\u2014Eppendorf Hamburg Germany"},{"name":"DZHK (German Centre for Cardiovascular Research), partner site Hamburg\/Kiel\/L\u00fcbeck 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