Correlation Between Total Atrial Conduction Time Estimated via Tissue Doppler Imaging (PA‐TDI Interval), Structural Atrial Remodeling and New‐Onset of Atrial Fibrillation After Cardiac Surgery

• DOI: 10.1111/jce.12084
• Publication Date: 2013-01-01T17:59:15Z
• Authors: PATRICK MÜLLER; CHRISTINE HARS; FABIAN SCHIEDAT; LEIF I. BÖSCHE; MICHAEL GOTZMANN; JUSTUS STRAUCH; J.W. DIETRICH; MARKUS VOGT; ANDREA TANNAPFEL; THOMAS DENEKE; ANDREAS MÜGGE; AYDAN EWERS
• Keywords: Doppler imaging

Atrial Conduction Time Background Recent studies identified total atrial conduction time (TACT) as an independent and powerful predictor of new‐onset fibrillation (AF). The purpose this study was to assess the association between degree fibrosis, TACT, frequency postoperative (POAF) among patients undergoing cardiac surgery. Methods Results Sixty in sinus rhythm (mean ± SD age 66 10 years; 22% women) without a history AF surgery were prospectively enrolled. TACT measured preoperatively left atrium by tissue‐Doppler Imaging (PA‐TDI interval). Holter‐ECG/telemetry used screen for POAF throughout days after Right appendages (RAA) obtained 33 during surgery; fibrosis assessed visual quantification (% area positive van Gieson elastic staining). occurred 23 (38%). Fibrosis extent RAA higher with compared those (27.5 1.93 vs 15.8 0.81% area; mean SEM; P < 0.001). PA‐TDI interval longer versus who maintained (152.1 3.0 120.8 1.8 milliseconds; 0.001) correlated (r = 0.73; 0.01). At cut‐off value 133 milliseconds, sensitivity specificity related 100% 86%, respectively. Conclusion is useful identify at risk correlates fibrosis.