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Endarterectomy for symptomatic non-stenotic carotids: a systematic review and descriptive analysis

Stroke & Vascular Neurology 2022年第1期7卷 6-12页

作者： anthony larson Valentina Nardi Waleed Brinjikji John Benson Giuseppe Lanzino Luis Savastano Department of Radiology Mayo ClinicRochesterMinnesotaUSA Neurosurgery Mayo ClinicRochesterMinnesotaUSA

Objective To systematically analyse prior reports of carotid endarterectomy(CEA)performed in cases of≤50%carotid stenosis in order to understand patient tolerance and potential benefit.Methods A systematic review and descriptive analysis was performed in concordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.An English-language search was performed of online databases using librarian-selected search terms.Abstracts were reviewed for relevance which included mention of carotid endarterectomy and stenosis.Prospective or retrospective observational cohort studies that reported series of patients who underwent endarterectomy for minimal(≤50%)luminal stenosis with reported outcomes were included.Results Six studies(which included our institutional series)with a total of 143 patients met the inclusion criteria.The weighted mean age at the time of CEA was 72.3 years;113(79.0%)were male.55.8%of patients with available data had recurrent ipsilateral ischaemic events despite medical therapy.Two patients out of 129 with available perioperative data(1.6%)had perioperative MRI findings of acute ischaemic stroke,both within the hemisphere contralateral to the side of CEA.Of the 138 patients with available follow-up(mean,36 months),none had recurrent ipsilateral ischaemic events.Conclusions Endarterectomy for symptomatic carotid disease causing≤50%stenosis may be a potentially beneficial strategy to prevent stroke recurrence.Studies with robust methodology are needed to draw more definitive conclusions in terms of the safety and efficacy of endarterectomy for minimal stenosis with vulnerable features relative to intensive medical therapy.

关键词： carotid stenosis analysis

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Carotid artery endarterectomy in patients with symptomatic non-stenotic carotid artery disease

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Stroke & Vascular Neurology 2022年第3期7卷 251-257页

作者： Valentina Nardi John C Benson anthony S larson Waleed Brinjikji Luca Saba Fredric B Meyer Giuseppe Lanzino Amir Lerman Luis E Savastano Department of Cardiovascular Diseases Mayo ClinicRochesterMinnesotaUSA Radiology Mayo ClinicRochesterMinnesotaUSA Radiology Azienda Ospedaliero UniversitariaCagliariItaly Neurosurgery Mayo ClinicRochesterMinnesotaUSA

Object We sought to determine the safety and efficacy in secondary stroke prevention of carotid endarterectomy(CEA)in patients with symptomatic non-stenotic carotid artery disease(SyNC).Methods This was a single-centre retrospective case series.All patients who underwent CEA for unilateral anterior circulation cerebrovascular events with ipsilateral<50%carotid stenosis from 2002 to 2020 were included.Imaging hallmarks including the degree of luminal stenosis and the presence of various vulnerable plaque characteristics(eg,intraplaque haemorrhage(IPH)on MR angiography,ulceration or low-density plaque on CT angiography)were assessed.The presence of vulnerable plaque characteristics was compared between arteries ipsilateral to the ischaemic event and contralateral arteries.The prevalence of perioperative/intraoperative complications,as well as recurrent ischaemic events at follow-up was determined.Results Thirty-two patients were included in the analysis,of which 25.0%were female.Carotid arteries ipsilateral to an ischaemic event had a significantly higher prevalence of IPH when compared with contralateral arteries(80.0%vs 0.0%;p<0.001).There were no intraoperative complications.One patient(3.1%)developed symptoms of transient ipsilateral ischaemia 1 day following CEA which resolved without treatment.In a median follow-up of 18.0 months(IQR 5.0-36.0),only one patient(3.1%)experienced a transient neurologic deficit with complete resolution(annualised rate of recurrent stroke after CEA of 1.5%for a total follow-up of 788 patient-months following CEA).All other patients(31/32,96.9%)were free of recurrent ischaemic events.Conclusion CEA appears to be safe and well-tolerated in patients with SyNC.Additional studies with larger cohorts and longer follow-up intervals are needed in order to determine the role of CEA in this patient population.

关键词： patients carotid prevention

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ULTRASHORT PULSE MULTISPECTRAL NON-LINEAR OPTICAL MICROSCOPY

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Journal of Innovative Optical Health Sciences 2009年第1期2卷 27-35页

作者： ADAM M.larson anthony LEE PO-FENG LEE KAYLA J.BAYLESS ALVIN T.YEH Department of Biomedical Engineering Texas A&M University College Station TexasUSA Department of Molecular and Cellular Medicine Texas A&M Health Science Center College Station TexasUSA

Ultrashort pulse,multispectral non-linear optical microscopy(NLOM)is developed and used to image,simultaneously,a mixed population of cells expressing different fluorescent protein mutants in a 3D tissue model of angiogenesis.Broadband,sub-10-fs pulses are used to excite multiple fluorescent proteins and generate second harmonic in collagen.A 16-channel multispectral detector is used to delineate the multiple non-linear optical signals,pixel by pixel,in NLOM.The ability to image multiple fluorescent protein mutants and collagen,enables serial measurements of cell-cell and cell-matrix interactions in our 3D tissue model and characterization of fundamental processes in angiogenic morphogenesis.

关键词： Two-photon excited fluorescence second harmonic generation multiple molecular imaging angiogenesis

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