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Objective To study the comparison of the therapeutic effect of Ultrasound guided and freehand botulinum toxin type of the treatment in children with cerebral palsy.Methods From March 2014 to September 2016,98 cases of children with cerebral palsy in our hospital by injection of botulinum toxin were treated.According to the way of injection,the children were divided into ultrasound group and free group(n =49).They were respectively gave botulinum toxin injection by guided Ultrasound guided and freehand ultrasound injection of hotulinum toxin injection.The amount of two groups of children was 3U/kg.Children muscle spasm degree of before and after treatment was assessed by modified Ashworth spasm scale.And exercise capacity of children before and after treatment was assessed by the gross motor function rating scale.The follow-up time was 3 months,the clinical curative effect of two groups of children was observed.Results The total efficiency of ultrasound guided group (98.0％) was significantly higher than the free group (79.6％),with statistically significant (P ＜ 0.05).Both groups before and after treatment in children with Ashworth score and GMFM score were significantly improved,with statistical significance (P ＜ 0.05).Ashworth score and GMFM scores of ultrasound guided group were significantly better than the free group,with statistically significant (P ＜ 0.05).Conclusion Botulinum toxin injection in the treatment of cerebral palsy children can effectively solve the spastic problem.Treatment of children with cerebral palsy by injecting botulinum toxin with ultrasound guided injection of botulinurn toxin is better than manual injection of botulinum toxin.
RESUMEN
qualitative and quantitative analysis of solid depolymerization products for supercritical methanolysis of ploy(ethylene terephthalate) polyester (PET) were studied by means of reversedphase high performance liquid chromatogr aphy on ZorbaxC8(4.6mm×250mm) with 70%(V/V) methanol as mobile phase. The results showed that the solid depolymerization products were mainly composed of dimethyl terephthalate (DMT), methyl(2hydroxyethyl)terephthalate (MHET), bis(hydroxyethyl)tere phthalate (BHET), dimers and oligomers, which could be separated effectively under the above chromatographic conditions. The calibration curves of DMT and BHET were linear in the range of 1.0～45 mg/L (n=8),r=0.9998～1.0000 and RSD＜2.8%. The determination limits of DMT and BHET were 4.0×10-4μg and 6.0×10-4μg respectively.