Exemption number e2019001.
The device was not returned for analysis.
A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.
Additionally, a review of the complaint history identified no similar incidents from this lot.
The reported patient effect of myocardial infarction is listed in the xience sierra everolimus eluting coronary stent systems instructions for use as a known patient effect of coronary stenting procedures.
The investigation was unable to determine a conclusive cause for the reported patient-device incompatibility (wall apposition); however, factors that may contribute to patient-device incompatibility (wall apposition) include, but are not limited to, incorrect device size for lesion, patient anatomical morphology, and patient disease state, and insufficient post-dilation.
The reported patient effects and treatment appear to be related to operational context of the procedure as it is likely the under deployed stent caused the reported myocardial infarction, dyspnea, dyskinesia, clamminess, additional therapy/non-surgical treatment and hospitalization.
There is no indication of a product quality issue with respect to manufacture, design or labeling.
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Study patient (b)(6).
It was reported that the procedure was performed on (b)(6) 2019, treating a target lesion in the mid left anterior descending (lad) artery.
The 3.
0 x 15 mm xience sierra stent was implanted without issue.
On (b)(6) 2019, the patient was working at home and developed difficulty breathing and shivering, with clamminess.
Emergency medical services was called and administered aspirin.
The patient was transported to the emergency department and hospitalized.
The patient was hemodynamically stable.
Troponin levels were elevated and non-st elevation myocardial infarction was diagnosed.
The patient was taken to the cath lab and coronary angiography noted that the stent was underdeployed.
Balloon angioplasty was performed.
Antiplatelet medications were administered.
The patient was observed for two days.
The event resolved on 11/16/2019 and the patient was discharged to home.
There was no additional information provided.
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