I would like to add, that the possibility of cognative memory loss, depends greatly on how long you were on the heart lung bypass equipment. Each person that has has surgery, also has different overall health issues, as well as how they react to different situations, drugs etc. The surgeons all know that there is a "safe" zone for the amount of time that a person can be on some of the equipment, and/or other procedures used during open heart surgery.
3/23/00 Ascending Aortic Dissection-St. Judes mech valve+graft, Vanderbilt, Nashville, TN
9/16/10 ON-X Aortic Valve/Root Replacment, Cleveland Clinic,OH, Dr Pettersson
9/16/10 Aortic Stent and Frozen Elephant Trunk Procedure, Cleveland Clinic,OH, Dr. Roselli