Key result
Pannus overgrowth was the primary cause of aortic St. Jude Medical valve obstruction, accounting for 7 of 9 redo valve replacement events in patients on adequate oral anticoagulation.
Observational (n=8)
Pannus overgrowth appears to be the primary mechanism for obstruction of aortic St. Jude Medical valves, even in patients on adequate oral anticoagulation.
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Consider pannus in obstructed aortic mechanical valves despite anticoagulation; case report data leave mechanism and management questions open.
S Aoyagi (2002) conducted an observational in Prosthetic valve obstruction (n=8). St. Jude Medical valves in the aortic position was evaluated on Cause of prosthetic valve obstruction. Pannus overgrowth was the primary cause of aortic St. Jude Medical valve obstruction, accounting for 7 of 9 redo valve replacement events in patients on adequate oral anticoagulation.
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