{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T16:33:22Z","timestamp":1794069202197,"version":"4.8.0"},"reference-count":14,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"8","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[2001,2,27]]},"abstract":"<jats:p>\n            <jats:italic>Background<\/jats:italic>\n            \u2014Diagnosis of bundle-branch reentry ventricular tachycardia (BBR-VT) by the standard approach is challenging, and this may lead to nonrecognition of this tachycardia mechanism. Because the postpacing interval (PPI) after entrainment has been correlated with the distance from the pacing site to the reentrant circuit, BBR-VT entrainment by pacing from the right ventricular apex (RVA) should result in a PPI similar to the tachycardia cycle length (TCL). This factor may differentiate BBR-VT from other mechanisms of wide-QRS-complex tachycardia with AV dissociation, such as myocardial reentrant VT (MR-VT) or AV nodal reentrant tachycardia (AVNRT), in which the circuit is usually located away from the RVA.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Methods and Results<\/jats:italic>\n            \u2014Transient entrainment by RVA pacing was attempted in 18 consecutive BBR-VTs and finally achieved in 13. Results were compared with those found in 59 consecutive MR-VTs and 50 consecutive AVNRTs. The mean PPI\u2212TCL difference was significantly (\n            <jats:italic>P<\/jats:italic>\n            &lt;0.0001) shorter in the BBR-VT group (9\u00b111 ms) than in the MR-VT (109\u00b148 ms) and the AVNRT (150\u00b129 ms) groups. No BBR-VT showed a PPI\u2212TCL &gt;30 ms (range \u221212 to 24 ms). Except for 2 MR-VTs, no MR-VT (range 21 to 211 ms) or AVNRT (range 100 to 215 ms) showed a PPI\u2212TCL &lt;30 ms.\n          <\/jats:p>\n          <jats:p>\n            <jats:italic>Conclusions<\/jats:italic>\n            \u2014A PPI\u2212TCL &gt;30 ms, after entrainment by RVA stimulation, makes BBR-VT unlikely. Conversely, a PPI\u2212TCL &lt;30 ms is suggestive of BBR-VT but should lead to further investigation by use of conventional criteria.\n          <\/jats:p>","DOI":"10.1161\/01.cir.103.8.1102","type":"journal-article","created":{"date-parts":[[2012,6,12]],"date-time":"2012-06-12T00:09:32Z","timestamp":1339459772000},"page":"1102-1108","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":81,"title":["Bundle-Branch Reentry and the Postpacing Interval After Entrainment by Right Ventricular Apex Stimulation"],"prefix":"10.1161","volume":"103","author":[{"given":"Jose L.","family":"Merino","sequence":"first","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael","family":"Peinado","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ignacio","family":"Fernandez-Lozano","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria","family":"Lopez-Gil","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fernando","family":"Arribas","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonardo J.","family":"Ramirez","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ignacio J.","family":"Echeverria","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose A.","family":"Sobrino","sequence":"additional","affiliation":[{"name":"From the Arrhythmia and Electrophysiology Unit, UMQ de Cardiologi\u0301a, Hospital La Paz, Universidad Auto\u0301noma, Madrid, Spain."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"e_1_3_2_1_2","doi-asserted-by":"publisher","DOI":"10.1161\/circ.78.2.3396163"},{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/0735-1097(91)90519-F"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1161\/circ.79.2.2914345"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540-8167.1993.tb01228.x"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1161\/circ.98.6.541"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1161\/circ.100.17.1784"},{"key":"e_1_3_2_7_2","unstructured":"Josephson ME. 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