Natural History and Management of Blunt Traumatic Pseudoaneurysms of the Internal Carotid Artery: The Harborview Algorithm Based Off a 10-Year Experience

作者：Morton Ryan P^*; Levitt Michael R; Emerson Samuel; Ghodke Basavaraj V; Hallam Danial K; Sekhar Laligam N; Kim Louis J; Chesnut Randall M

来源：Annals of Surgery, 2016, 263(4): 821-826.

DOI：10.1097/SLA.0000000000001158

• blunt cerebrovascular injury
• carotid cavernous fistula
• pseudoaneurysm
• stroke
• transcranial Doppler ultrasonography

Objective:To define the natural history of, and treatment strategy for, blunt traumatic internal carotid artery (ICA) pseudoaneurysms.Background:The natural history and management of traumatic ICA pseudoaneurysms is controversial.Methods:We retrospectively identified all traumatic ICA pseudoaneurysms diagnosed on head/neck computed tomographic angiography at a high-volume trauma center over a 10-year period. Radiographic and clinical data were recorded, and a treatment algorithm was derived.Results:Forty-three pseudoaneurysms were diagnosed in 39 patients. All patients were treated with daily aspirin unless contraindicated, and 82% underwent daily transcranial Doppler ultrasonography with embolic monitoring. A rate of 8 or more emboli per hour was predictive of embolic stroke (P = 0.0076). Acute ischemic or embolic stroke was seen in 7 patients (16%) with an overall mortality in this subpopulation of 42% (n = 3). Four patients (9%) underwent acute surgical treatment (parent vessel sacrifice and/or arterial bypass) for ongoing ischemia. Long-term radiographic and clinical follow-up was obtained for 36 surviving patients (mean = 8 months; range: 1 week-5 years), all of whom were maintained on daily aspirin. No delayed ischemic or embolic events were reported. For ICA pseudoaneurysms treated with aspirin and observation alone, 9 (28%) increased in size, 17 (53%) decreased or stabilized, and 6 (19%) resolved. Enlargement of 5mm or more in maximal diameter underwent delayed endovascular treatment with a 100% obliteration rate and no complications.Conclusions:Traumatic ICA pseudoaneurysms are safely treated with daily aspirin, embolic monitoring, and radiographic surveillance. Acute stroke or hemorrhage, or delayed radiographic progression, are indications for endovascular or surgical treatment.

• 出版日期2016-4