{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T04:32:08Z","timestamp":1771475528242,"version":"3.50.1"},"reference-count":19,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2020,8,9]],"date-time":"2020-08-09T00:00:00Z","timestamp":1596931200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2020,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Permanent His bundle pacing (p\u2010HBP) could be an alternative for traditional cardiac resynchronization therapy (CRT), but an important limitation is that p\u2010HBP cannot always correct the left bundle branch block (LBBB). The purpose of this article is to assess electrocardiographic patterns of LBBB that can predict electrocardiographic response (QRS narrowing) to His bundle pacing.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We designed a prospective descriptive study of patients with LBBB and CRT indication proposed for CRT by p\u2010HBP. We analyzed the correlation between the different electrocardiographic patterns and the correction of conduction disturbance (LBBB).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>We included 70 patients. Pacing at the location where His bundle electrogram was recorded narrowed the QRS in 81.4% (n\u00a0=\u00a057). Basically, we identified two electrocardiographic patterns in lead V1: QS or rS. The QS pattern was a sensitivity of 56%, a specificity of 84.6%, and a positive predictive value (PPV) of 94.1% to predict the correction of the LBBB (area under the curve [AUC] = .70). In patients with rS pattern, a ratio between the descending and the ascending S wave component duration \u22650.64 was a very good predictor of the correction of the LBBB (AUC = .968); with a value \u22650.64, the sensitivity, specificity, and PPV was 92%, 100%, and 100%, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In patients with LBBB and CRT indication, the QS pattern in lead V1 predicts the correction of the QRS with HBP. In the case of rS pattern in lead V1, the ratio descending\/ascending S wave component duration has a strong correlation with the LBBB correction.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pace.14021","type":"journal-article","created":{"date-parts":[[2020,7,28]],"date-time":"2020-07-28T08:30:19Z","timestamp":1595925019000},"page":"1318-1324","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Electrocardiographic patterns predictive of left bundle branch block correction with His bundle pacing"],"prefix":"10.1111","volume":"43","author":[{"given":"Pablo","family":"Mori\u00f1a\u2010V\u00e1zquez","sequence":"first","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Juan Ramon Jimenez  Huelva Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7114-973X","authenticated-orcid":false,"given":"Maria Teresa","family":"Moraleda\u2010Salas","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Juan Ramon Jimenez  Huelva Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"\u00c1lvaro","family":"Arce\u2010Le\u00f3n","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Juan Ramon Jimenez  Huelva Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juan Manuel","family":"Fern\u00e1ndez\u2010G\u00f3mez","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Juan Ramon Jimenez  Huelva Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"Venegas\u2010Gamero","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Juan Ramon Jimenez  Huelva Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Francisco","family":"D\u00edaz\u2010Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Hemodynamic Unit, Department of Cardiology Hospital Juan Ram\u00f3n Jim\u00e9nez  Huelva 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