{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T00:59:23Z","timestamp":1777769963111,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2008,11,7]],"date-time":"2008-11-07T00:00:00Z","timestamp":1226016000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2008,11,7]],"date-time":"2008-11-07T00:00:00Z","timestamp":1226016000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiology"],"abstract":"<jats:p>A case of progressive trifascicular block late after correction of Fallot\u2019s tetralogy is reported. Progressive damage to the His bundle and\/or its branches over 18 months after surgery was suggested by sequential ECGs and confirmed by repeat electrophysiological studies done 3 and 18 months postoperatively: the H-V interval increased from 55 to 80 ms over this period. With atrial pacing at increasing rates, supra-His 2:1 atrioventricular (AV) block occurred at a rate of 158\/min at the first study; at the second study, infra-His block occurred at an atrial pacing rate of only 128\/min. A permanent pacemaker was implanted prophylactically. 5 years after surgery, complete heart block occurred without symptoms, the pacemaker having taken over ventricular stimulation.<\/jats:p>","DOI":"10.1159\/000173503","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T05:48:13Z","timestamp":1226296093000},"page":"185-191","source":"Crossref","is-referenced-by-count":6,"title":["Progressive Atrioventricular Block after Total Correction of Fallot\u2019s Tetralogy, Documented by Repeat Electrophysiological Studies"],"prefix":"10.1159","author":[{"given":"M.","family":"Bolens","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"B.","family":"Friedli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2008,11,7]]},"container-title":["Cardiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000173503","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T16:26:24Z","timestamp":1777479984000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000173503"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,11,7]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000173503","archive":["Portico"],"relation":{},"ISSN":["0008-6312","1421-9751"],"issn-type":[{"value":"0008-6312","type":"print"},{"value":"1421-9751","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,11,7]]}}}