[Surgery of high-grade asymptomatic stenosis of the internal carotid artery]. 2012

S Stötzel, and F Krause, and H Bergert
Klinik für Gefäß- und endovaskuläre Chirurgie, HELIOS Klinikum Erfurt. sarah.stoetzel@helios-kliniken.de

OBJECTIVE Surgery of carotid artery stenosis is an evidence-based procedure. In Germany approximately 25 percent of the strokes are caused by arteriosclerotic processes in the extracranial internal carotid artery and are consequently potentially avoidable by an appropriate treatment. The symptoms, the stenosis degree as well as the perioperative risk represent the basis for the indication. The perioperative complication rate should be under 3 percent for those cases with asymptomatic stenoses and under 6 percent for those with symptomatic stenoses. METHODS The most frequently applied operation procedures comprise carotid thrombo-endarterectomy (TEA) including patch graft and the eversion endarterectomy. In the following video we present both methods in a 76-year-old female patient with an asymptomatic 95 percent stenosis as well as in an 84-year-old female patient with an asymptomatic 85 percent stenosis operated under regional anaesthesia. METHODS Regional anaesthesia is performed through installation of a high cervical block under reclination of the head to the contralateral side. Then incision of the skin and the platysma along the front of the sternocleidomastoid muscle. Preparation of the carotid bifurcation with minimal manipulation as well as protection of the surrounding neural structures. Afterwards clamping of the vessels under permanent neurological monitoring and controlled hypertonia. Open thrombo-endarterectomy after longitudinal arterial incision with plaque removal en bloc and closure by using a bovine patch graft in four-point seam technique. This method should be preferred in cases with long-segment stenosis as well as in cases with a small lumen internal carotid artery. In the framework of eversion endarterectomy, we perform a tangential resection of the ACI on the bifurcation. The plaque cylinder is mobilised afterwards and is removed through eversion of the whole vessel. Then the reinsertion of the ACI in the bifurcation can be performed with an additional shortening of the artery in cases of kinking. In this way short- segment stenosis lend themselves to fast and safe treatment. In all cases digital subtraction angiography is recommended by the authors for intraoperative quality monitoring. CONCLUSIONS In the hands of experienced vascular surgeons, the open carotid TEA including patch graft and the eversion endarterectomy under regional anaesthesia represent highly effective procedures for symptomatic/asymptomatic carotid stenosis. The S3-guidelines for the therapy of carotid artery stenosis will be published this year and should be consulted for the interdisciplinary therapy decision.

UI MeSH Term Description Entries
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D002343 Carotid Artery, Internal Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose. Arteries, Internal Carotid,Artery, Internal Carotid,Carotid Arteries, Internal,Internal Carotid Arteries,Internal Carotid Artery
D003299 Cooperative Behavior The interaction of two or more persons or organizations directed toward a common goal which is mutually beneficial. An act or instance of working or acting together for a common purpose or benefit, i.e., joint action. (From Random House Dictionary Unabridged, 2d ed) Compliant Behavior,Behavior, Compliant,Behavior, Cooperative,Compliant Behaviors,Cooperative Behaviors
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D000765 Anesthesia, Conduction Injection of an anesthetic to inhibit nerve transmission in a specific part of the body. Anesthesia, Regional,Conduction Anesthesia,Regional Anesthesia
D001705 Bioprosthesis Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers. Glutaraldehyde-Stabilized Grafts,Heterograft Bioprosthesis,Porcine Xenograft Bioprosthesis,Xenograft Bioprosthesis,Bioprostheses,Bioprostheses, Heterograft,Bioprostheses, Porcine Xenograft,Bioprostheses, Xenograft,Bioprosthesis, Heterograft,Bioprosthesis, Porcine Xenograft,Bioprosthesis, Xenograft,Glutaraldehyde Stabilized Grafts,Glutaraldehyde-Stabilized Graft,Graft, Glutaraldehyde-Stabilized,Grafts, Glutaraldehyde-Stabilized,Heterograft Bioprostheses,Porcine Xenograft Bioprostheses,Xenograft Bioprostheses,Xenograft Bioprostheses, Porcine,Xenograft Bioprosthesis, Porcine
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor

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