Objective To observe the effect and safety of the treatment of urethral stricture with guide wires leading a balloon dilatation catheter.Methods The clinical date of 25 cases of male patients suffering traumatic posterior urethral stricture were analyzed retrospectively,was treated with a balloon dilation catheter led by guide wires.Results All our patients were cured successfully with a guide-wire-leading balloon dilatation catheter expanding only once and there were no complications such as urethral perforation,rectal injury etc.Although 2 cases had not been ohviously improved risht after dilatation,but improved furtherly six months later.The follow-up was six to twelve months.23 cases were cured.2 osses were improved.The recovery rate was 92%.The effective rate was 100%.Conclusion It was safe and effective to treat urethral stricture with balloon dilation catheter led by guide wires.

Objective To develop a scale suitable for evaluating the scientific research ability of medical workers in Liaoning Province,analyze its reliability and validity to provide a scientific and objective measurement method for the evaluation of scientific research ability of medical workers in Liaoning Province.Methods A survey of 6 577 medical workers in 2 grade and up medical institutions of Liaoning province was carried out by completing a self-assessment scale form of research capacity,5 812 effective questionnaires were collected,335 out of which were used for exploratory factor analysis,5 477 were used for confirmatory factor analysis and reliability and validity analysis.Results The scale of Cronbach's a coefficient is 0.982,the retest reliability is 0.967,the cumulative contribution rate of the four factors extracted by exploratory factor analysis was 80.195％.The validation factor analysis showed that the model fit well (GFI=0.907,AGFI=0.881,CFI=0.962,RMESA=0.076,NFI=0.960,IFI=0.962).Conclusions The research capability scale for Liaoning medical workers has good reliability and validity,which can be used in the evaluation of the research capability of the medical workers in Liaoning province.