BOSTON SCIENTIFIC CORPORATION WALLFLEX COLONIC SOFT STENT SYSTEM WITH ANCHOR LOCK DELIVERY SYSTEM; STENT, COLONIC, METALIC, EXPANDABLE
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Device Problem
Device Stenosis (4066)
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Patient Problems
Erosion (1750); Hemorrhage/Bleeding (1888); Low Blood Pressure/ Hypotension (1914); Shock (2072); Vomiting (2144); Thrombosis/Thrombus (4440); Insufficient Information (4580); Appropriate Clinical Signs, Symptoms, Conditions Term / Code Not Available (4581)
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Event Date 08/01/2022 |
Event Type
Death
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Manufacturer Narrative
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Block b3: the exact date of the event is unknown.Approximated based on the month and year the article was published.Block d4, h4: the complainant was unable to provide the suspect device lot number.Therefore, the manufacture and expiration dates are unknown.Block g2 literature source: bacopanos, et al."aortoduodenal fistula from duodenal stenting for malignant gastric obstruction" department of vascular and endovascular surgery; doi https://doi.Org/10.1016/j.Ejvsvf.2022.08.002.Block h6: imdrf device code a0106 captures the reportable event of stent obstruction within device.Imdrf patient code e2321 captures the reportable event of hypotension.Imdrf patient code e2401 captures the reportable event of collapse.Imdrf patient code e0506 captures the reportable event of minor hemorrhage.Imdrf patient code e0514 captures the reportable event of thrombosis.Imdrf patient code e2336 captures the reportable event of shock.Imdrf patient code e1032 captures the reportable event of vomiting.Imdrf patient code e2402 captures the reportable event of distention.Imdrf impact code f2302 captures the reportable event of received three units of packed red blood cells (prbc).Imdrf impact code f2303 captures the reportable event of received intravenous (iv) fluid resuscitation with prophylactic antibiotics was administered.Imdrf impact code f22 captures the reportable event of triphasic computed tomography angiogram (cta) identified locules of gas.Imdrf impact code f2203 captures the reportable event of angiography identified aortic narrowing.Imdrf impact code f19 captures the reportable event of patient was transferred to the interventional endovascular suite for emergency (evar).Imdrf impact code f2301 captures the reportable event of an occlusion balloon was placed within the thoracic aorta and gore bifurcate stent graft with an iliac artery limb extension on the left was implanted.Imdrf impact code f02 captures the reportable event of patient died at an external facility.
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Event Description
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Boston scientific became aware of events involving a wallflex duodenal stent through the article, "aortoduodenal fistula from duodenal stenting for malignant gastric obstruction," by eleni bacopanos, et al.Per the article, wallflex duodenal stents were implanted to treat gastric outflow obstruction secondary to metastatic adenocarcinoma.Indication was aortoduodenal fistula (adf) in all three patients.All patients presented with upper gastrointestinal (gi) bleeding and underwent endovascular aortic stent graft repair (evar), with temporary aortic balloon occlusion in one case.All cases were successful in achieving hemostasis.The first case, although initially complicated by acute stent thrombosis of the right iliac limb, was discharged to a rehabilitation facility and survived for two years.7 months post stent placement, the patient for the first case report, presented with hematemesis and collapse.Patient was in shock with distended abdomen and decreased hemoglobin count despite having received three units of packed red blood cells (prbc).Intravenous (iv) fluid resuscitation with prophylactic antibiotics was administered.Triphasic computed tomography angiogram was performed and results identified locules of gas within the retroperitoneal para-aortic soft tissue, in keeping with a fistulous communication with the duodenum.The patient was then transferred to the interventional endovascular suite for emergency evar.Bilateral percutaneous femoral access was obtained.Angiography was done and results identified aortic narrowing with thrombus at the level of the duodenal stent without pseudoaneurysm.An occlusion balloon was placed within the thoracic aorta for 10 minutes to reduce hypotension and gore bifurcate stent graft with an iliac artery limb extension on the left was implanted.The patient was discharged after five weeks to rehabilitation with lifelong oral moxifloxacin and died at an external facility.Patient's cause of death in unknown.
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Manufacturer Narrative
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Block b3: the exact date of the event is unknown.Approximated based on the month and year the article was published.Block d4, h4: the complainant was unable to provide the suspect device lot number.Therefore, the manufacture and expiration dates are unknown.Block g2 literature source: bacopanos, et al."aortoduodenal fistula from duodenal stenting for malignant gastric obstruction" department of vascular and endovascular surgery; doi https://doi.Org/10.1016/j.Ejvsvf.2022.08.002.Block h6: imdrf device code a0106 captures the reportable event of stent obstruction within device.Imdrf patient code e2321 captures the reportable event of hypotension.Imdrf patient code e2401 captures the reportable event of collapse.Imdrf patient code e0506 captures the reportable event of minor hemorrhage.Imdrf patient code e0514 captures the reportable event of thrombosis.Imdrf patient code e2336 captures the reportable event of shock.Imdrf patient code e1032 captures the reportable event of vomiting.Imdrf patient code e2402 captures the reportable event of distention.Imdrf impact code f2302 captures the reportable event of received three units of packed red blood cells (prbc).Imdrf impact code f2303 captures the reportable event of received intravenous (iv) fluid resuscitation with prophylactic antibiotics was administered.Imdrf impact code f22 captures the reportable event of triphasic computed tomography angiogram (cta) identified locules of gas.Imdrf impact code f2203 captures the reportable event of angiography identified aortic narrowing.Imdrf impact code f19 captures the reportable event of patient was transferred to the interventional endovascular suite for emergency (evar).Imdrf impact code f2301 captures the reportable event of an occlusion balloon was placed within the thoracic aorta and gore bifurcate stent graft with an iliac artery limb extension on the left was implanted.Imdrf impact code f02 captures the reportable event of patient died at an external facility.Block h11: correction to the initial mdr in blocks d1 (brand name), d2a (common device name), d2b (product code), d4 (model number and unique identifier udi).
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Event Description
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Boston scientific became aware of events involving a wallflex duodenal stent through the article, "aortoduodenal fistula from duodenal stenting for malignant gastric obstruction," by eleni bacopanos, et al.Per the article, wallflex duodenal stents were implanted to treat gastric outflow obstruction secondary to metastatic adenocarcinoma.Indication was aortoduodenal fistula (adf) in all three patients.All patients presented with upper gastrointestinal (gi) bleeding and underwent endovascular aortic stent graft repair (evar), with temporary aortic balloon occlusion in one case.All cases were successful in achieving hemostasis.The first case, although initially complicated by acute stent thrombosis of the right iliac limb, was discharged to a rehabilitation facility and survived for two years.7 months post stent placement, the patient for the first case report, presented with hematemesis and collapse.Patient was in shock with distended abdomen and decreased hemoglobin count despite having received three units of packed red blood cells (prbc).Intravenous (iv) fluid resuscitation with prophylactic antibiotics was administered.Triphasic computed tomography angiogram was performed and results identified locules of gas within the retroperitoneal para-aortic soft tissue, in keeping with a fistulous communication with the duodenum.The patient was then transferred to the interventional endovascular suite for emergency evar.Bilateral percutaneous femoral access was obtained.Angiography was done and results identified aortic narrowing with thrombus at the level of the duodenal stent without pseudoaneurysm.An occlusion balloon was placed within the thoracic aorta for 10 minutes to reduce hypotension and gore bifurcate stent graft with an iliac artery limb extension on the left was implanted.The patient was discharged after five weeks to rehabilitation with lifelong oral moxifloxacin and died at an external facility.Patient's cause of death in unknown.
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