According to the initial report, "the false aneurysm was observed on the central posterior wall, so the repairment procedure was performed on (b)(6) 2019.On (b)(6) 2019, the patient underwent surgery for ascending aorta repairment and aortic valve repairment.For both repairments, bioglue was used on anastomotic part of artificial vessel for supporting hemostasis.There was false aneurysm but the relationship between bioglue and developing of false aneurysm is unclear.".
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The manufacturing records for lots 18mjx008, 18ejx001 and 18ejx002 were reviewed and it was confirmed that all records were controlled, available for review, and met all specifications per the device master record.All lots passed functional testing and met release specifications.The following information is unknown: the condition of the native tissue before surgery, how much bioglue was used in each procedure, or if the syringe was primed and de-aired.Per kitamura et al, pseudoaneurysm formation ¿is not a rare late complication late after repair of acute aortic dissection (mohammadi, s et al).The underlying mechanism of pseudoaneurysm formation is considered to be associated with tissue cutting due to the fragility of the dissected aortic wall at the anastomosis and from the chemical reaction to the aldehyde contained in the glue material (bingley, ja et al).¿ perhaps the native tissue was too damaged to be repaired and an aortic replacement with a synthetic graft should have been considered.Furthermore, while surgical glue is helpful in surgery for acute type a aortic dissection, it may also cause late pseudoaneurysm formation or valve deterioration when not used properly (kitamura et al).Dr.Fehrenbacher et al.Performed a retrospective review of 92 consecutive patients who underwent complex operation in which bioglue was used.Postoperative pseudoaneurysm formation occurred in 3.3% of the patients (fehrenbacher 2006).Weiner et al.Presented at 15th world congress of heart disease in vancouver, canada in july 2010 they identified 97consecutive patients in whom bioglue was used to reinforce thoracic aortic suture lines.During follow-up 2 patients were identified as having a pseudoaneurysm, the control group, without bioglue use, had similar incidences of pseudoaneurysm formation (weiner 2010).Ma et al.Reviewed 233 patients with a mean follow-up time of 2.4 years post-operation; a pseudoaneurysm was detected in only 1 patient (0.6%).The authors concluded, ¿the use of bioglue in thoracic aortic surgery was not associated with excess incidence of anastomotic pseudoaneurysm formation following surgical repair of thoracic aortic disease.¿ (ma 2017) there is insufficient information to determine if there is an association between the use of bioglue and the pseudoaneurysm formed.Pseudoaneurysm formation is a known complication in standard surgical repair of aortic dissections.The condition of the native aortic tissue at the time of initial surgery is unknown in this case.Pre-existing conditions such as aortic medial necrosis or other intrinsic aortic disease may have contributed to further complications.This report is being submitted as required by federal regulations and does not constitute an admission that the device caused or contributed to the reported event.Furthermore, this report reflects the event as alleged by the complainant and does not imply that the information reported to cryolife is accurate or has been confirmed by cryolife.
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