Cardiac Valve. Repair: Current Methods Mitral valve
Repair vs. Replacement �>%80 of MR are repairable �Produces more physiological flow states �It better preserves LV function �Less thrombolic events �Betters survival �Long durability �Lower risk of endocarditis
Meta-analysis repair versus replacement for ischemic mitral regurgitation . � 2011 � 9 study � mitral valve repair for IMR is associated with better short-term and long-term survival compared to mitral valve replacement
Sizing Of Ring Degenerative normal leaflet: normal ring size Long Leaflet : Larger ring size Rheumatic & Endocarditis: normal ring size IMR : smaller ring size complete Rigid
Acute IMR �Revascularizasion the same time �Central jet and normal mitral aparatus-- Ring �If not- MVR with Chordal preserving and bio prothesis
chronic IMR(CAD) � 3+ and 4+( repair) � 2+ if lv dysfunction or incomplete revascularization(Repair) � 1+ if fluctuant MR or intra op TEE : need to repair
mitral dilated cardiomyopaty(IIIb)
Techniques �If central jet repair �If eccentric or complex lesion replace �If post leaflet angle>45 replace � 2 size undersize ring �Very low SAM risk �Sadle shape ring better than flat ring
Geoeform annuloplasty reduced AP distance elevated P 2 segment
Technique of the papillary muscle elevation. Ueno T et al. Interact Cardio. Vasc Thorac Surg 2007; 6: 9 -11 Published by European Association for Cardio-Thoracic Surgery. All rights reserved.
Vein Harvesting
Annuloplasty Rings and MRI relatively minor magnetic field interactions no report of a patient incident or injury MRI at 3 -Tesla Since the magnetic field deemed minimal compared with the force exerted by the beating heart (ie, approximately 7. 2 N