The operation for isolated, stenotic, and symptomatic kinking of the internal carotid artery is safe and effective in preventing stroke and relieving the symptoms of cerebral ischemia. Design: A consecutive sample clinical study with a mean follow-up of 44 months. Setting: The surgical department of an academic tertiary care center and an affiliated secondary care center. Patients: Fifty-four patients with a mean age of 67 years underwent 55 revascularizations of the internal carotid artery. The surgical procedures consisted of the following: shortening and reimplantation in the common carotid artery in 36 cases, bypass grafting in 15 cases, and transposition into the external carotid artery in 4 cases. Main Outcome Measures: Cumulative survival, primary patency, and stroke-free and neurologic symptomfree rates expressed by standard life-table analysis. Results: No patients died in the postoperative period. The postoperative stroke rate was 1.8%. The cumulative rates (SEs) at 5 years were as follows: survival, 70% (10.2%); primary patency, 89% (7.8%); overall stroke free, 92% (6.8%); ipsilateral stroke free, 96% (5.3%); neurologic symptom free, 90% (7.5%); and ipsilateral symptom free, 93% (6.5%). Conclusion: Revascularization of the internal carotid artery for the treatment of isolated, stenotic, and symptomatic kinking is safe and effective in preventing stroke and relieving symptoms of cerebrovascular insufficiency.
Current ultrasound-guided biopsy procedures used in videoassisted surgery suffer from limitations due to difficult triangulation and manual positioning of the biopsy needle. We present a prototype computer-assisted robotic system for needle positioning that operates in a synergistic way with the clinician. The performance of the system in terms of positioning accuracy and execution time is assessed. Results suggest suitability for clinical use.
A pancreatectomy combined with a resection of the portal or superior mesenteric vein for cancer with venous involvement not exceeding 2 cm is indicated in order to extend the potential benefits of a curative resection.
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