SHA 42. Centralized pan-Middle East survey on the undertreatment ofhypercholesterolemia (CEPHEUS)

been associated with more heart block and rhythm disturbances, strong data are not supporting. Methods: This retrospective study considered of 1441 patients who underwent mitral valve procedure exclusively or concomitant with other valve surgery or Coronary Artery Bypass Grafting (CABG) through a median sternotomy at Tehran Heart Center from March 2002 to March 2009. Of these, 1167 were performed through the standard LA approach and 274 by a minitransseptal approach comprise of right atriotomy with a 4–5-cm vertical incision through fossa ovalis. Results: Ninety three percent had mitral valve replacement, 6.5% had mitral valve repair, and 48.1% had concomitant valve procedures, Coronary Artery Bypass Grafting (CABG) simultaneously performed in 24.4% of patients. There were no significant differences between two groups in post-operative complications and 30-days mortality. The maintenance of sinus rhythm at discharge time and the incidences of post-operative atrial fibrillation (36.9% versus 33.6%, p= 0.304), newly developed atrioventricular block (3.6% versus 2.1%, p= 0.145) and need to permanent pacemaker (4.3% versus 3.8%, p= 0.105) were not significantly different between the two groups. Conclusion: The minitransseptal approach can provide excellent mitral valve exposure without any significant increase in atrial fibrillation, atrioventricular block or new pacemaker requirements. Tracks: Cardiovascular Surgery.