{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T17:43:44Z","timestamp":1773164624297,"version":"3.50.1"},"reference-count":27,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2012,12,17]],"date-time":"2012-12-17T00:00:00Z","timestamp":1355702400000},"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":[[2013,4]]},"abstract":"<jats:p><jats:bold>Left Septal Atrial Tachycardias.<\/jats:bold>\u2002<jats:italic>Objective:<\/jats:italic> The objective was to characterize the electrocardiographic and electrophysiological features of focal atrial tachycardia (FAT) originating from the left septum (LS).<\/jats:p><jats:p><jats:italic>Background:<\/jats:italic> FAT is recognized to occur at predefined anatomic locations rather than randomly throughout the atria. We describe the ECG and EP features of ATs originating from the LS as an important site for apparent perinodal tachycardias.<\/jats:p><jats:p><jats:italic>Methods:<\/jats:italic> Nine patients presenting with LS FAT from a consecutive series of 384 underwent EP\/RFA for symptomatic FAT.<\/jats:p><jats:p><jats:italic>Results:<\/jats:italic> The mean age was 56 \u00b1 12 years; 7 female with symptoms for 36 \u00b1 28 months. P wave morphology (PWM) was negative\/positive in lead V1 and across the precordial leads and negative or negative\/positive in inferior leads in all patients. Tachycardia was incessant in 6 out of 9 patients with a mean tachycardia cycle length 421 \u00b1 56 milliseconds. His A was ahead of P wave in all patients (mean \u221215 \u00b1 5 milliseconds) and earlier than CS proximal (mean 4 \u00b1 9 milliseconds). Successful acute focal ablation achieved at a mean of 31 \u00b1 12 milliseconds ahead of P wave with no recurrences at a mean follow\u2010up of 30 \u00b1 28 months.<\/jats:p><jats:p><jats:italic>Conclusion:<\/jats:italic> Although the left septum is an uncommon site for focal AT an awareness of this location for harboring foci is particularly important when mapping apparently right\u2010sided septal tachycardias. <jats:italic>(J Cardiovasc Electrophysiol, Vol. 24, pp. 413\u2010418, April 2013)<\/jats:italic><\/jats:p>","DOI":"10.1111\/jce.12049","type":"journal-article","created":{"date-parts":[[2012,11,8]],"date-time":"2012-11-08T17:26:13Z","timestamp":1352395573000},"page":"413-418","source":"Crossref","is-referenced-by-count":21,"title":["Left Septal Atrial Tachycardias: Electrocardiographic and Electrophysiologic Characterization of a Paraseptal Focus"],"prefix":"10.1111","volume":"24","author":[{"given":"MICHAEL 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