{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T03:08:38Z","timestamp":1789787318517,"version":"4.0.1"},"reference-count":12,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2015,8,18]],"date-time":"2015-08-18T00:00:00Z","timestamp":1439856000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pacing Clinical Electrophis"],"published-print":{"date-parts":[[2016,1]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Ventricular overdrive pacing (VOP) produces reset during the transition zone (TZ) of QRS fusion in orthodromic reentrant tachycardia (ORT) and after the TZ in atrioventricular nodal reentrant tachycardia (AVNRT), and this represents a simple diagnostic maneuver to differentiate the two tachycardia mechanisms.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>The purpose of this study was to determine whether the number of beats with reset in the TZ predicts accessory pathway (AP) location in ORT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We retrospectively reviewed 57 patients with ORT (21 left\u2010sided AP, 20 septal AP, and 16 right\u2010sided AP) and 20 patients with AVNRT (19 typical AVNRT and one atypical AVNRT) who underwent VOP from the right ventricular apex. We analyzed the number of beats with reset during or after the TZ, demonstrated by fixed ventricular stimulus\u2010atrial (SA) interval during VOP.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The overall mean tachycardia cycle length [CL] minus VOP CL was 22.6\u00a0\u00b1\u00a07.5 ms with no statistical difference between the groups (P = 0.480). The mean number of beats in the TZ with fixed SA interval was 2.5\u00a0\u00b1\u00a01.4 for the whole ORT group, 1.1\u00a0\u00b1\u00a00.4 for left\u2010sided AP (range 1\u20132), 2.8\u00a0\u00a0\u00b1\u00a0\u00a00.9 for septal AP (range 1\u20135), and 4.0\u00a0\u00b1\u00a00.9 for right\u2010sided AP (range 3\u20136) (P &lt; 0.001). Using a cutoff &gt;2 beats distinguished right\u2010 versus left\u2010sided AP in all cases.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Assessing the number of beats in the TZ with fixed SA interval during VOP helps to determine AP location in ORT and adds valuable information to an established simple diagnostic pacing maneuver, especially when a two\u2010catheter simplified approach is employed.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pace.12691","type":"journal-article","created":{"date-parts":[[2015,7,14]],"date-time":"2015-07-14T15:01:47Z","timestamp":1436886107000},"page":"21-27","source":"Crossref","is-referenced-by-count":4,"title":["Number of Beats in the Transition Zone With Fixed SA Interval during Right Ventricular Overdrive Pacing Determines Accessory Pathway Location in Orthodromic Reentrant Tachycardia"],"prefix":"10.1111","volume":"39","author":[{"given":"FINN","family":"AKERSTR\u00d6M","sequence":"first","affiliation":[{"name":"Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology Hospital Virgen de la Salud  Toledo Spain"},{"name":"Karolinska University Hospital Karolinska Institutet at Department of Cardiology  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MARTA","family":"PACH\u00d3N","sequence":"additional","affiliation":[{"name":"Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology Hospital Virgen de la Salud  Toledo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"FRANCISCO JAVIER","family":"GARC\u00cdA\u2010FERN\u00c1NDEZ","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Complejo Asistencial Universitario de Burgos  Burgos Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u00d3SCAR","family":"SALVADOR\u2010MONTA\u00d1\u00c9S","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MATS","family":"JENSEN\u2010URSTAD","sequence":"additional","affiliation":[{"name":"Karolinska University Hospital Karolinska Institutet at Department of Cardiology  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ALBERTO","family":"PUCHOL","sequence":"additional","affiliation":[{"name":"Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology Hospital Virgen de la Salud  Toledo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RAFAEL","family":"PEINADO","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Hospital Universitario La Paz  Madrid Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"RICARDO","family":"SALGADO","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology Complejo Asistencial Universitario de Burgos  Burgos Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"PER","family":"INSULANDER","sequence":"additional","affiliation":[{"name":"Karolinska University Hospital Karolinska Institutet at Department of Cardiology  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"LUIS","family":"RODR\u00cdGUEZ\u2010PADIAL","sequence":"additional","affiliation":[{"name":"Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology Hospital Virgen de la Salud  Toledo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MIGUEL A.","family":"ARIAS","sequence":"additional","affiliation":[{"name":"Cardiac Arrhythmia and Electrophysiology Unit, Department of Cardiology Hospital Virgen de la Salud  Toledo Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,8,18]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.66.1.196"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(91)90492-4"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.88.6.2623"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(00)00770-1"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-8167.2006.00373.x"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.recesp.2014.07.010"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCEP.109.931311"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2010.05.033"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2010.09.089"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2011.01.001"},{"key":"e_1_2_6_12_1","unstructured":"JosephsonME.Supraventricular tachycardias. In:Josephson ME (ed.): Clinical Cardiac Electrophysiology. Techniques and Interpretations.Philadelphia PA Lippincott Williams & Wilkins 2008 pp.175\u2013284."},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.74.3.493"}],"container-title":["Pacing and Clinical Electrophysiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1111%2Fpace.12691","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/pace.12691","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,26]],"date-time":"2023-09-26T15:17:30Z","timestamp":1695741450000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/pace.12691"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,8,18]]},"references-count":12,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2016,1]]}},"alternative-id":["10.1111\/pace.12691"],"URL":"https:\/\/doi.org\/10.1111\/pace.12691","archive":["Portico"],"relation":{},"ISSN":["0147-8389","1540-8159"],"issn-type":[{"value":"0147-8389","type":"print"},{"value":"1540-8159","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,8,18]]}}}