OBJECTIVE To investigate the value of narrow band imaging endoscopy without magnification in the diagnosis of malignant laryngeal lesions. METHODS A total of 425 patients diagnosed as laryngeal tumor from February 2013 to November 2014 were included in this study. All the cases were examined with electronic nasopharyngolaryngoscope equipped with NBI mode. The characteristics of mucosal morphology and superficial vessels of each lesion under NBI mode were evaluated for diagnosis and assessed by reference to histopathology. RESULTS The sensitivity, specificity, positive, predictive value and negative predictive value of NBI in diagnosis of malignant laryngeal lesions were 80.43%, 97.10%, 77.08% and 97.61%respectively. And NBI endoscopy is helpful to the detection of early cancer and precancerous lesions. CONCLUSION NBI endoscopy without magnification is a promising tool for improving the diagnosis of malignant laryngeal lesions.

miR-224 is a small noncoding RNA that usually binds to response element of target mRNA through the seed sequences,leading to the suppression of translation or mRNA degradation. Recent researches indicate that miR-224 not on?ly aberrantly expresses in multiple tumors(hepatocellular carcinoma,gastric carcinoma, diffuse large B-cell lymphoma, prostatecancer,colorectal cancer, etc),playing an important role in tumor suppressor or oncognen,but also has an effect on the chemosensitivity of tumor.In this article,we review recent studies about the mechanism of miR-224 in the tumor develop?ment ,progression and chemosensitivity.

The computerization of medical consumable warehouse-in&out has become a general trend of modern medical consumable management.The medical consumable management software in No.1 Military HIS is modified and improved so as to be integrated with practice for better management of medical consumable.

The bidding method based on network platform is introduced. Combining internet resource with invite tender, a set of perfect system on hospital internet bidding is built to expand the number and scope of suppliers. To meet the requirement of hospitals, the corresponding suppliers are selected and the work efficiency of invite tender is improved. The whole level of material centralized purchasing is advanced and purchasing cost can be reduced by developing system of internet bidding.

Objective To introduce the necessity of newly added examination and approval system. Methods The expatiation content of examination and approval system, process and the attention-getting problems of implementation were expounded. Results The new system is established, on the one hand it can be made evidence-based in the purchasing process and on the other hand it can be limited to same species and wash out inadaptable manufacture. Conclusion The newly added examination and approval system was built to meet the clinic need and conform to the standard of using equipment in hospital.

This paper aims to discuss how to reasonably make use of the procurement resources,measurement resources,maintenance resources,management resources,financial resources,environment resources and other auxiliary resources.The integration of medical equipment and various resources can raise medical equipment index and improve hospital efficiency and benefit.

By comparing the current methods of public bidding,a new method for inviting public bidding is introduced including its basic process,organization methods and concrete implementation steps.What's more,a series of related things are discussed in detail such as the name lists of invitees,the requirement and technical parameters in inviting public bidding,time and place,specialists in judge group,confirmation of successful bidder,publicizing advice note for successful bidder,etc.The main purpose is to save the medical cost in hospital and make full use of the existing resources.It is proved to be feasible in practice.

The purpose of inviting public bidding is to enhance the management of medical consumables and reduce the cost of medical treatment. The project contains three aspects: fixing of the bid products and bid methods, compilation of the bid documents, evaluation of the bid and results collection. The bid project should follow some principles such as publicity, equity and honesty.

Several common methods of remittance for foreign trade are introduced in the course of purchasing imported medical equipment.The advantages and disadvantages of every remittance method are also elaborated.The best method should be chosen by hospitals according to the actual situations so as to lower or avoid unnecessary risks and raise economic benefits.

Problems in metrology work in special hospital are elaborated,such as poor law awareness,repeated break-down of metrology equipment,etc.Improvement suggestions are put forward including emphasis on well-constituted metrology staff and adequate equipment purchase,cooperation in clinical departments,strengthening the management of metrology equipment at all levels,reinforcing the work function of the leading group in metrology management.This study is significant in supporting medical treatment and enhancing the hospital medical quality.