It was reported that on (b)(6) 2019, the patient presented with a thoracoabdominal aortic aneurysm (taaa) class iv that was successfully treated with a gore® excluder® thoracoabdominal branch endoprosthesis (tambe) and gore viabahn® vbx balloon expandable endoprostheses that were used as side branch components.A pre-ct, dated (b)(6) 2019, showed that the celiac artery was somewhat stenotic (diameter ostium 5.5 mm, diameter 15 mm distal 7.5 mm).Intraoperatively, the superior mesenteric artery (sma) branch was deployed prior to the celiac branch.When introducing the sheath and celiac branch component, initial resistance was felt which was believed to be due to stenosis at the celiac ostium.However, celiac branch components were successfully delivered and deployed.On (b)(6) 2019, it was identified that the sma branch was partially compressed/stenotic between the outlet of its portal on the tambe aortic component and the ostium of the sma.The causality cannot be confirmed, but it is suspected that this stenosis may have occurred when introducing and deploying the celiac branch components.Intravascular ultrasound (ivus) was utilized to determine the morphology of the sma stent stenosis.On (b)(6) 2019, two pta balloons were advanced into the celiac and sma branches.These balloons were inflated at the same time in a kissing fashion.No additional components were deployed.Repeat angiography and ivus of the sma stent revealed that the stenosis has greatly improved.The patient tolerated the procedure.
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