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• W2100641821 abstract "BACKGROUND: Early recurrent carotid stenosis, defined as greater than 50% stenosis within 2 years of a carotid endarterectomy (CEA), occurs in 4% to 19% of patients. These lesions are secondary to myointimal hyperplasia (MH). The natural history of these lesions has been examined prospectively, but the appropriate management of these lesions has not been clearly defined. The vascular surgery service at Madigan Army Medical Center (MAMC) has prospectively collected a cohort of patients with recurrent high-grade carotid stenoses following CEA to determine their natural history and define the ideal therapeutic approach for those lesions. METHODS: Patients undergoing CEA between January 1, 1993, and January 1, 1997, at a single tertiary care institution were followed prospectively with postoperative carotid duplexes at 3-month intervals for the first year and then every 6 months for a year and then annually thereafter. Data were collected regarding patient demographics, type of carotid closure, neurologic morbidity, and death. These results were compared with accepted rates in the literature. Discrete variables were tested for significance by chi-square analysis and Fisher’s exact test. A P value less than or equal to 0.05 was considered significant. RESULTS: One hundred and seventy-four (174) patients with 181 operative sites were evaluated. Fourteen patients with 17 sites (9%) had recurrent stenosis. Twelve patients with 14 sites (7%) had stenoses of 50% to 79%. All were asymptomatic. Two patients with 3 sites (2%) had stenoses greater than 80%. Two sites were managed operatively because of neurologic symptoms or preocclusive nature and one remains asymptomatic and stable on serial duplex imaging. All lesions were present at 6 months and those in the 50% to 79% category did not progress in follow-up. Recurrent carotid stenosis occurred to a significantly higher degree in women (women 11 of 60 18.3% versus men 6 of 114 5.3%; P = 0.25), primary closure versus patch angioplasty (primary 6 of 22 27.3% versus patch 11 of 159 6.9%; P= 0.01), and dacron versus polytetrafluoroethylene (PTFE) patch angioplasty (dacron 7 of 36 19.4% versus PTFE 2 of 100 2.0%; P = 0.02). CONCLUSION: Early recurrent stenosis (50% to 79%) is a benign lesion. Patch angioplasty is preferred over primary closure. Dacron patches had a significantly higher rate of recurrent stenosis when compared with PTFE patches. Women undergoing CEA are more prone to recurrent stenosis. Postoperative duplex at 3 and 6 months will identify recurrent carotid stenosis (given a normal duplex prior to discharge following CEA). Moderate high-grade (50% to 79%) stenoses are benign. High-grade (80% to 99%) stenoses require individual management." @default.
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• W2100641821 title "The natural history of early recurrent carotid artery stenosis" @default.
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• W2100641821 doi "https://doi.org/10.1016/s0002-9610(99)00076-8" @default.
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