Basal cerebral computed tomography as diagnostic tool to improve patient selection in asymptomatic carotid artery stenosis

One-hundred patients were included to evaluate the role of cerebral computed tomography (CT) to improve patient selection in asymptomatic internal carotid stenosis. Symptomatic patients were assigned to group A, asymptomatic patients to group B. A cerebral CT pattern A was observed in groups A and B in 60% and 20%, respectively (P < .0001). Between A and B groups, type 6 plaques were found, respectively, in 26.7% and 7.5% of patients (P = .01); a type 5 in 51.7% and 45% (P = .32) of patients; and a type 4 in 21.7% and 47.5% of patients, respectively (P = .006). Within B group, the association of CT pattern A and histological plaque level 4, 5, and 6 was, respectively, 25% (P = .15), 50% (P = .53), and 25% (P = .16). In group B, a 7-fold risk increase in CT pattern A was found in patients with level 6 plaque. In asymptomatic patients with high-risk plaque, a basal cerebral CT scan can be used as diagnostic tool to improve patient selection for intervention.     

Safety in the Use of Dexmedetomidine (Precedex) for Deep Brain Stimulation Surgery: Our Experience in 23 Randomized Patients

Objective: Evaluation of safety and efficacy of dexmedetomidine in deep brain stimulation (DBS) surgery. Materials and Methods: A cohort of 23 patients, candidates for DBS for Parkinson's disease, Tourette syndrome, or obsessive‐compulsive disorder, was randomized in two groups: dexmedetomidine group and control group. Standard anesthesiologic parameters were recorded and analyzed, together with the need for other medications. A ten‐degree scale (visual analog scale) assessing patient discomfort during DBS also was recorded at the end of surgery. Results: The results demonstrated good stability of intraoperative monitoring: no respiratory depression and good overall cooperation with the neurologist, while no side‐effects were recorded. Conclusions: Our conclusion is that dexmedetomidine should be considered as a valuable option for sedation in poorly collaborating patients undergoing DBS surgery.