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“A prospective study was underway to evaluate the outcome of eyebrow keyhole approach for ruptured anterior circulation aneurysms on early stage.
In the past 4 years, 88 patients with ruptured anterior circulation aneurysms, Trichostatin A solubility dmso were operated on early stage by an experienced neurosurgical team through eyebrow craniotomy. The clinical data were analyzed.
Patients with Hunt and Hess Grade I-II (85.2%) or III (14.8%) were selected for eyebrow approach on early stage. All aneurysms were small (20.5%) or middle (79.5%) in size. All but seven (92.0%) aneurysms were clipped successfully. The opening of frontal
sinus occurred in 11(12.5%) cases through eyebrow approach. Of all, 78 (88.6%) patients achieved favorable outcomes.
Eyebrow keyhole approach for ruptured anterior circulation aneurysms on early stage might be in particular selected according to the Hunt and Hess Scale, the projection of aneurysm,
the length of M1 segment, the location of cerebral hematoma, the size and complexity of aneurysm, as well as the preference and experience of the neurosurgical team.”
“Background: The effectiveness of ganglionated plexi (GP) ablation in patients with atrial fibrillation (AF) is ambiguous. Some researchers had already suggested that additional identification of complex fractionated atrial electrograms (CFAE) around the areas with a positive reaction to high-frequency stimulation (HFS) might improve the accuracy of GP’s boundaries location, then enhancing the success rate of ablation. The purpose of this study was to assess the XL184 safety and efficacy of GP ablation directed by HFS and CFAE in patients with paroxysmal OSI-906 supplier AF (PAF). Methods and Results: Sixty-two patients with PAF (age 57 +/- 8 years) underwent GP ablation. Ablation targets were the sites where vagal reflexes were evoked by HFS and additional extended ablation CFAE area around the areas where vagal reflexes were evoked. At 12 months,
71% of patients were free of symptomatic AF. At 3 months after ablation the root mean square successive differences and HF were significantly lower in patients without AF recurrence (P < 0.0001 and P = 0.004). The LF/HF ratio was significantly higher in patients without AF recurrence (P = 0.02). Conclusion: Enhanced GP ablation directed by HFS and CFAE can be safely performed and enables maintenance of sinus rhythm in the majority of patients with PAF for a 12-month period. Denervation of the intrinsic cardiac autonomic nervous system may be the preferable target of catheter ablation of AF. (PACE 2012;XX:19)”
“A model for conductance in n-type non-degenerate semiconductors is proposed and applied to polycrystalline SnO2 used as a gas sensor. Particular attention is devoted to the fundamental mechanism of Schottky barrier formation due to surface states in nanostructured grains.