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J Thorac Cardiovasc Surg 2008;136:1382-1383
© 2008 The American Association for Thoracic Surgery
Brief Communication |
Cardiovascular Department, Ospedali Riuniti, Bergamo, Italy
Received for publication October 30, 2007; revisions received December 22, 2007; accepted for publication January 7, 2008. * Address for reprints: Paolo Ferrazzi, MD, FETCS, Cardiovascular Department, Ospedali Riuniti, Largo Barozzi 1, 24128 Bergamo, Italy. (Email: pferrazzi@ospedaliriuniti.bergamo.it).
| The first 20% of the full text of this article appears below. |
The STICH trial will elucidate the results of surgical ventricular restoration (SVR) associated with coronary artery bypass grafting in patients with ischemic dilated cardiomyopathy but, while awaiting these findings, the current literature shows that left ventricular (LV) sphericalization, continued LV remodeling, and recurrent mitral valve (MV) regurgitation may occur after SVR.1
One possible explanation for these events is the worsening or occurrence of diastolic dysfunction.2
Until March 2005, we performed SVR by an endoventricular circular patch plasty (Dor procedure),3
which consists of 2 circular purse-string sutures (Fontan stitch) and a polyester fiber patch that is much stiffer than the infarcted myocardium. In the Dor procedure, the amount of foreign material used and lateral wall involvement by the Fontan stitch may be responsible for worsening LV diastolic function, as is shown by the increased slope of the end-diastolic pressure/volume relationship (EDPVR).2
A number of authors have described modifications of the Dor technique based on the limited use
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