On (b)(6) 2018, an abbott sizer was used and a 21 mm trifecta gt valve was implanted in the patient's aortic position due to degeneration of the valve, with non-everting mattress suture technique using pledgets.The patient presented to the hospital complaining of recent chest pain during exertion.Severe aortic stenosis was confirmed in the examination, and a re-do avr was performed on (b)(6) 2020.Upon explant, pannus formation was confirmed on the inside of the valve, which was impeding mobility of the valve.Pannus formation is also suspected to be on the outflow side of the valve.The patient was implanted with a perceval sutureless aortic valve(by livanova) and is in stable condition post-operatively.
|
Additional information for: d10, g4, g7, h2, h3, h6, and h10.The reported pannus formation was confirmed.Histopathological examination found circumferential fibrous pannus ingrowth on the inflow surface, which narrowed the inflow diameter.No acute inflammation or significant calcifications were present.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed and the product met all specifications.The pannus ingrowth, and resulting narrowing of the inflow diameter, is consistent with the reported stenosis.
|