{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T07:22:45Z","timestamp":1776410565680,"version":"3.51.2"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,1,17]],"date-time":"2005-01-17T00:00:00Z","timestamp":1105920000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cardiovasc electrophysiol"],"published-print":{"date-parts":[[2005,3]]},"abstract":"<jats:p> <jats:italic>Introduction:<\/jats:italic> Surgical repair of tetralogy of Fallot is complicated by the occurrence of ventricular tachycardia (VT). Among different indexes proposed to assess prognosis of these patients, the study of QRS and repolarization provided useful information. Controversial results come from the analysis of signal\u2010averaging ECG (SAECG). The aim of our study was to identify patients operated for tetralogy of Fallot at higher risk of sudden death by means of SAECG.<\/jats:p><jats:p> <jats:italic>Methods and Results:<\/jats:italic> Sixty\u2010six consecutive patients, mean age 26 \u00b1 10 years, were studied 17.7 \u00b1 5.8 years after total correction for tetralogy of Fallot using standard ECG, 24\u2010hour Holter recordings, SAECG, and echocardiography. The following variables were measured: standard QRS duration, filtered QRS duration (fQRS), high\u2010frequency and low\u2010amplitude signal duration (HFLA), root mean square of the mean voltage in the terminal portion of filtered QRS (RMS), left and right end\u2010diastolic volumes, and ejection fractions.<\/jats:p><jats:p>During a mean follow\u2010up period of 7.3 \u00b1 3.1 years, 12 patients had episodes of sustained VT and two of them suddenly died. All patients had complete right bundle branch block. Patients with VT were characterized by a significantly longer fQRS duration at all filter settings. On the contrary, there was no difference in standard QRS duration in patients with or without VT. At a multivariate analysis, left ventricular ejection fraction and fQRS were independent predictors for VT.<\/jats:p><jats:p> <jats:italic>Conclusions:<\/jats:italic> A longer fQRS duration is associated with an increased risk in developing malignant ventricular arrhythmias in asymptomatic patients after total correction of tetralogy of Fallot.<\/jats:p>","DOI":"10.1046\/j.1540-8167.2005.40312.x","type":"journal-article","created":{"date-parts":[[2005,3,11]],"date-time":"2005-03-11T09:27:03Z","timestamp":1110533223000},"page":"288-292","source":"Crossref","is-referenced-by-count":19,"title":["Comparison Between QRS Duration at Standard ECG and Signal\u2010Averaging ECG for Arrhythmic Risk Stratification After Surgical Repair of Tetralogy of Fallot"],"prefix":"10.1111","volume":"16","author":[{"given":"GIULIA","family":"RUSSO","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ANTONIO FRANCO","family":"FOLINO","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ELISA","family":"MAZZOTTI","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"LUCA","family":"REBELLATO","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"LUCIANO","family":"DALIENTO","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,1,17]]},"reference":[{"key":"e_1_2_5_2_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.59.6.1232"},{"key":"e_1_2_5_3_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.56.4.566"},{"key":"e_1_2_5_4_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.44.3.248"},{"key":"e_1_2_5_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(97)00316-1"},{"key":"e_1_2_5_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(85)90239-5"},{"key":"e_1_2_5_7_2","first-page":"897","article-title":"Morte improvvisa nella tetralogia di Fallot operata","volume":"15","author":"Corrado D","year":"1985","journal-title":"G Ital Cardiol"},{"key":"e_1_2_5_8_2","doi-asserted-by":"publisher","DOI":"10.1017\/S1047951100000330"},{"key":"e_1_2_5_9_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.92.2.231"},{"key":"e_1_2_5_10_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.95.2.401"},{"key":"e_1_2_5_11_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.81.6.650"},{"key":"e_1_2_5_12_2","first-page":"280","article-title":"Two dimensional echocardiographic determination of left ventricular volume, systolic function and mass: Summary and discussion of the 1989 recommendations of the Am Society of Echocardiography","volume":"84","author":"Schiller NB","year":"1991","journal-title":"Circulation"},{"key":"e_1_2_5_13_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.69.3.497"},{"key":"e_1_2_5_14_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.77.5.1062"},{"key":"e_1_2_5_15_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199308263290901"},{"key":"e_1_2_5_16_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.92.2.158"},{"key":"e_1_2_5_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(00)02714-8"},{"key":"e_1_2_5_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9149(99)80114-3"},{"key":"e_1_2_5_19_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.72.6.580"},{"key":"e_1_2_5_20_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.82.5.1690"},{"key":"e_1_2_5_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(02)02344-6"}],"container-title":["Journal of Cardiovascular Electrophysiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1046%2Fj.1540-8167.2005.40312.x","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1046\/j.1540-8167.2005.40312.x","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T23:49:36Z","timestamp":1696981776000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1046\/j.1540-8167.2005.40312.x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2005,1,17]]},"references-count":20,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2005,3]]}},"alternative-id":["10.1046\/j.1540-8167.2005.40312.x"],"URL":"https:\/\/doi.org\/10.1046\/j.1540-8167.2005.40312.x","archive":["Portico"],"relation":{},"ISSN":["1045-3873","1540-8167"],"issn-type":[{"value":"1045-3873","type":"print"},{"value":"1540-8167","type":"electronic"}],"subject":[],"published":{"date-parts":[[2005,1,17]]}}}