Per the instructions for use (ifu), permanent or transient neurological events such as transient ischemic attack (tia) and stroke are known potential adverse events associated with the transcatheter heart valve (thv) procedure and the use of the edwards thv devices.According to the literature review, and as documented in a clinical technical summary written by edwards lifesciences, stroke is recognized in the literature as a well-known complication in a small number of patients undergoing thv.Risk factors correlating with several patient co-morbidities have been identified.Although in many cases the root cause of the event is unable to be determined, strokes during thv are undoubtedly multifactorial, the dominant etiology likely being intra-procedure embolic events.A transcranial doppler study during thv demonstrated that most procedural embolic events occurred during balloon valvuloplasty, manipulation of catheters across the aortic valve, and valve implantation.An analysis in patients undergoing valve surgery revealed four baseline characteristics and two procedural events that were associated with early post-procedure stroke: female sex, ef < 30%, diabetes, age older than 70 years, bypass procedure time> 120 min, and calcification of the ascending aorta.Predictors of late stroke have included female sex, age older than 75 years, atrial fibrillation, and a history of or current smoking.There were no significant differences in the frequency of late strokes between thv and aortic valve replacement (avr) patients.After thv, there appears to be a more considerable proportion of early strokes occurring < 24 h post-procedure, but thv patients with multiple co-morbidities are probably at higher risk of both early and late strokes.In this case, there was no allegation or indication a product malfunction contributed to this adverse event.Investigation results are inconclusive as patient and procedural factors were not provided; however, the event could be related to the mechanisms described above.A review of edwards lifesciences risk management documentation was performed for this case.The reported event is an anticipated risk of the transcatheter heart valve procedure, additional assessment of this adverse event is not required at this time.Complaint histories for all reported events are reviewed against trending control limits monthly, and any excursions above the control limits are assessed and documented as part of this monthly review.No corrective or preventative actions are required.
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As reported through the japanese tavi registry, after a transfemoral aortic valve replacement (tavr) procedure with a 23mm sapien 3 valve in the aortic position, on postoperative day (pod) 5, no obvious paralysis was observed, but mini-mental state examination (mmse) score after tavr procedure dropped from 27 to 13 points.Magnetic resonance image (mri) showed a new cerebral infarction.The patient was discharged on pod 8 after continuing medication without any symptoms.Per the medical opinion, the event relationship to both the valve and the tavr procedure was unknown.
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