{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,20]],"date-time":"2025-09-20T19:26:30Z","timestamp":1758396390810},"reference-count":16,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2007,4,29]],"date-time":"2007-04-29T00:00:00Z","timestamp":1177804800000},"content-version":"vor","delay-in-days":4776,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[1994,4]]},"abstract":"<jats:p>Supernormal Conduction. This report describes a patient with tachycardia\u2010dependent left bundle branch block (LBBB) and atrial extrasystoles, some of which were followed by an unexpectedly narrow QRS complex. His\u2010bundle recordings and premature atrial stimulation were performed to analyze the mechanism underlying the normalized intraventricular conduction of some of the early atrial impulses. The results suggested the presence of supernormal conduction in the left bundle branch (LBB), because(1) the HV interval was identical in LBBB complexes and in early narrow QRS complexes; (2) during single lest stimulation using different paced atrial cycle lengths, there was a well\u2010defined range of H<jats:sub>1<\/jats:sub>, H<jats:sub>2<\/jats:sub>, intervals resulting in normalization of intraventricular conduction; and (3) atrial pacing with a cycle length of 500 msec resulted in alternation between wide and narrow QRS complexes. These findings rule out alternative mechanisms that could explain the unexpectedly normal intraventricular conduction of early impulses.<\/jats:p>","DOI":"10.1111\/j.1540-8167.1994.tb01171.x","type":"journal-article","created":{"date-parts":[[2007,5,14]],"date-time":"2007-05-14T01:40:27Z","timestamp":1179106827000},"page":"345-349","source":"Crossref","is-referenced-by-count":10,"title":["Supernormal Conduction in the Left Bundle Branch"],"prefix":"10.1111","volume":"5","author":[{"given":"GIUSEPPE","family":"ORETO","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JOEP L.R.M.","family":"SMEETS","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"LUZ\u2010MARIA","family":"RODRIGUEZ","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"CARL","family":"TIMMERMANS","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"HEIN J.J.","family":"WELLENS","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2007,4,29]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-009-6781-6_4"},{"key":"e_1_2_1_3_2","volume-title":"The Disorders of Cardiac Rhythm","author":"Schamroth L","year":"1980"},{"key":"e_1_2_1_4_2","first-page":"224","volume-title":"Electrocardiograph of Arrhythmias","author":"Fisch C","year":"1990"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-8167.1993.tb01234.x"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.38.1.5"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(73)90269-5"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0736(85)80011-X"},{"key":"e_1_2_1_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(48)90696-6"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(56)90063-1"},{"key":"e_1_2_1_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(69)90345-7"},{"key":"e_1_2_1_12_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.31.3.337"},{"key":"e_1_2_1_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0736(71)80036-5"},{"key":"e_1_2_1_14_2","doi-asserted-by":"publisher","DOI":"10.1378\/chest.57.4.395"},{"key":"e_1_2_1_15_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.46.2.264"},{"key":"e_1_2_1_16_2","first-page":"427","article-title":"A reappraisal ol supernormal conduction. 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