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PubMed · 14042788

MESENTERIC ARTERY INSUFFICIENCY.

J C COLES·J B WALKER·N F GERGELY·J BUTTIGLIERO
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Abstract

The syndromes of superior mesenteric artery insufficiency are briefly reviewed. Three cases associated with infarction of bowel which were treated with restoration of arterial flow and resection of residual irretrievable bowel are reported. In two patients an embolectomy and in one patient a bypass graft were used to restore arterial continuity. The importance of the recognition and removal of irretrievable bowel at the time of vascular reconstruction is emphasized. Success is not necessarily predicated by the time factor alone, although the importance of early diagnosis and surgical intervention cannot be denied.

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EmbolectomyEmbolismGeriatricsHumansInfarctionIntestinal DiseasesIntestinesMesenteric ArteriesMesenteric Artery, SuperiorMesenteric Vascular OcclusionSurgical Procedures, OperativeSyndromeTime FactorsVascular Surgical ProceduresEMBOLISMGERIATRICSINTESTINAL DISEASESMESENTERIC VASCULAR OCCLUSIONSURGERY, OPERATIVEVASCULAR SURGERYJournal Article

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J C COLES, J B WALKER, N F GERGELY, J BUTTIGLIERO. 1963-08-31. MESENTERIC ARTERY INSUFFICIENCY.. https://pubmed.ncbi.nlm.nih.gov/14042788/

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Preclinical testing of a new clot-retrieving wire device using polyvinyl alcohol hydrogel vascular models.

INTRODUCTION: Cerebral embolism is the principal cause of cerebral infarction. Recently, mechanical embolectomy has been proposed as an effective method. We performed a preclinical evaluation of a new mechanical clot-retrieving wire. METHODS: This clot-retrieving wire consisted of three nitinol loops at the tip of a microguidewire. These three loops could be collapsed into a 0.018-inch wire compatible microcatheter. Each loop was 8 mm long and 3.5 mm wide. For simulation, polyvinyl alcohol (PVA) vascular anatomical models of the human carotid (eight models) and vertebrobasilar (three models) circulation were constructed. A pulsatile flow circulation system was used. Embolic clots were produced using pig blood plasma. The microcatheter and the microguidewire were advanced beyond the clot. The wire was then exchanged for the retrieving wire. The microcatheter was then pulled slightly back to open the loops. The clot was then caught by withdrawal of the system. Once caught, the clot was retrieved to the guiding catheter tip. We investigated the following points: ease of device deployment, clot capture ability, clot removal against blood flow and removal of the clot out of the introducer system. RESULTS: A total of 104 procedures were performed in 11 PVA models and evaluated. The drop rate was 19%. We succeeded in partial and total recanalization in 51.0% of the procedures (53/104) within 30 minutes. CONCLUSION: This new clot-retrieving wire could be useful for mechanical clot extraction in stroke.

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