Annals of vascular surgery
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Review Case Reports
Endovascular stent graft repair of a thoracic aortic gunshot injury.
Endovascular treatment approaches offer minimally invasive alternative strategies for the management of vascular injuries. While endovascular stent graft repair of blunt injury to the thoracic aorta is well described, there are few reports of its application for treatment of penetrating injuries of the thoracic aorta. We report the successful treatment of a through-and-through gunshot injury of the thoracic aorta and review how this technology may be applied for the treatment of penetrating thoracic aortic injury.
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The National Kidney Foundation Dialysis Outcomes and Quality Initiative (DOQI) recommends autogenous fistulae as the preferred access for new dialysis procedures. Unfortunately, despite superior patency rates compared to prosthetic grafts, even autogenous access durability is often undermined by venous stenosis due to intimal hyperplasia at the outflow vein or by central venous stenosis due to long-standing central venous catheters. Salvage interventions, in the form of endovascular treatments such as percutaneous transluminal angioplasty (PTA) and/or stenting, are increasingly utilized for access salvage and maintenance. ⋯ Central venous and venous outflow interventions extended overall access patency by 38.5 and 33 months, respectively (p < 0.0001). Endovascular interventions are the mainstay of treatment for the malfunctioning dialysis access. Despite the need for multiple reinterventions and close surveillance, catheter-based interventions positively contribute to dialysis access durability in accordance with DOQI guidelines.
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Case Reports
Endovascular treatment of traumatic carotid pseudoaneurysm with stenting and coil embolization.
Posttraumatic internal carotid pseudoaneurysm is an infrequent but potentially life-threatening condition that complicates approximately one-third of blunt carotid injuries. Other types of injuries include dissection, thrombosis, and complete disruption. Historically, carotid pseudoaneurysms have been managed operatively with repair, ligation, and anticoagulation, with percutaneous angioplasty and stenting emerging over the past decade. We present the case of a 19-year-old patient with a posttraumatic internal carotid pseudoaneurysm that increased in size with conservative management and was treated with coil embolization and stenting.
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We examined subclinical alterations of cerebral function during carotid endarterectomy (CEA) and predictability of minor cerebral damage by perioperative levels of biochemical markers of brain damage (S100B and neuron-specific enolase [NSE]). Twenty consecutive patients with > or =70% asymptomatic carotid stenosis undergoing elective CEA were enrolled. Pre- and postoperative testing included magnetic resonance imaging (MRI) of the head, a standardized neurological exam, a battery of neuropsychological tests, and measurement of serum levels of S100B and NSE. ⋯ In one patient, a significant decline of cognitive function was observed. This was the only individual to obtain a consistently high S100B and NSE increase. Neuropsychological testing combined with measurements of S100B and NSE may improve sensitivity when assessing subtle cerebral damage following CEA.
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Outcome analysis is increasingly being used to develop health-care policy and direct patient referral. For example, the Leapfrog Group health-care quality initiative has proposed "evidence-based hospital" referral criteria for specific procedures including elective abdominal aortic aneurysm repair (AAA-R). These criteria include an annual hospital AAA operative volume exceeding 50 cases and provision of intensive care unit (ICU) care by board-certified intensivists. ⋯ There are increasing societal and economic pressures to direct patient referrals to "centers of excellence" for specific surgical procedures. Although our institution meets neither of the Leapfrog Group's proposed criteria, our mortality and LOS for both intact and ruptured infrarenal AAA-R are equivalent or superior to published benchmarks for high-volume hospitals. Individual institutional outcome results such as these suggest that patient referral and care should be based upon actual, carefully verified outcome data rather than utilization of surrogate markers such as case volume and subspecialist involvement in postoperative care.