{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T04:04:37Z","timestamp":1793073877937,"version":"4.5.0"},"reference-count":42,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"7","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circ: Arrhythmia and Electrophysiology"],"published-print":{"date-parts":[[2016,7]]},"abstract":"<jats:sec>\n            <jats:title>Background\u2014<\/jats:title>\n            <jats:p>Radiofrequency ablation (RFA) of ventricular tachycardia (VT) can fail because of inaccessibility to the VT substrate. Transarterial coronary ethanol ablation can be effective but entails arterial instrumentation risk. We hypothesized that retrograde coronary venous ethanol ablation can be an alternative bail-out approach to failed VT RFA.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods and Results\u2014<\/jats:title>\n            <jats:p>Out of 334 consecutive patients undergoing VT\/premature ventricular contraction ablation, 7 patients underwent retrograde coronary venous ethanol ablation. Six out of 7 patients had failed RFA attempts (including epicardial in 3). Coronary venogram-guided venous mapping was performed using a 4F quadripolar catheter or an alligator-clip\u2013connected angioplasty wire. Targeted veins included those with early presystolic potentials and pace-maps matching VT\/premature ventricular contraction. An angioplasty balloon (1.5\u20132\u00d76 mm) was used to deliver 1 to 4 cc of 98% ethanol into a septal branch of the anterior interventricular vein in 5 patients with left ventricular summit VT, a septal branch of the middle cardiac vein, and a posterolateral coronary vein (n=1 each). The clinical VT was successfully ablated acutely in all patients. There were no complications of retrograde coronary venous ethanol ablation, but 1 patient developed pericardial and pleural effusion attributed to pericardial instrumentation. On follow-up of 590\u00b1722 days, VT recurred in 4 out of 7 patients, 3 of whom were successfully reablated with RFA.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions\u2014<\/jats:title>\n            <jats:p>Retrograde coronary venous ethanol ablation is safe and feasible as a bail-out approach to failed VT RFA, particularly those originating from the left ventricular summit.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/circep.116.004352","type":"journal-article","created":{"date-parts":[[2016,7,13]],"date-time":"2016-07-13T02:54:36Z","timestamp":1468378476000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":129,"title":["Retrograde Coronary Venous Ethanol Infusion for Ablation of Refractory Ventricular Tachycardia"],"prefix":"10.1161","volume":"9","author":[{"given":"Bahij","family":"Kreidieh","sequence":"first","affiliation":[{"name":"From the Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, TX."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mois\u00e9s","family":"Rodr\u00edguez-Ma\u00f1ero","sequence":"additional","affiliation":[{"name":"From the Division of Cardiac Electrophysiology, Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, TX."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paul","family":"A. 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