Objective.To evaluate the role of hysterectomy for patients with gestational trophoblastic tumor.Methods.We retrospectively analyzed 68 cases of gestational trophoblastic neoplasia treated by hysterectomy from 1985～1997 at PUMC hospital. Thirty-eight cases were diagnosed of choriocarcinoma and 30 were invasive mole.Results.Twenty-three elder patients who didn't desire to preserve fertility were selected for hysterectomy after shorter courses of chemotherapy, 22 of them had a complete remission(95.6%), the total aver-age courses of chemotherapy was 4.2. Of twenty-seven chemorefractory cases who were suspected of a refractory isolated lesion in the uterus, delayed hysterectomy as an adjunct to chemotherapy was performed, 20 of them got a complete remission(74.1%), the total average courses of chemotherapy were 9.4. Emergency hysterectomy is indicated in 18 patients with uterine perforation or life-threatening hemorrhage, 17 cases had a complete remission(94.4%), the total average courses of chemotherapy were 7.6.Conclusion.Although the development of effective chemotherapy has resulted in improved survival of patients with gestational trophoblastic tumor, hysterectomy remains an important adjuncts in the treatment of a selected subset of patients; in order to operate more completely and prevent recurrence, it's better to perform extended hysterectomy for the indicated patients.

Objective:To develop a questionnaire on knowledge, attitude and practice of Helicobacter pylori (Hp) infection among physical examination population, and to verify its reliability and validity.Methods:This study was a cross-sectional survey. Based on the theory of knowledge, attitude and practice, the first draft of the questionnaire on knowledge, attitude and practice of Hp infection in physical examination population was designed by means of retrospective literature research, qualitative interview, discussion in the research group. The structure and items of the questionnaire were consulted and revised by the expert consultation method (Delphi method). Through pre investigation of 186 physical examination personnel from May to June in 2021, the final version of the "knowledge, attitude and practice questionnaire on Helicobacter pylori infection among physical examination population" was formed after adjustment and verification of the reliability and validity of the questionnaire.Results:The questionnaire of knowledge, attitude and practice of Hp infection in physical examination population included 3 dimensions and 28 items, and the cumulative variance contribution rate was 56.271%. The content validity index of each item level of the questionnaire was 0.75-1.00, and the content validity index of the total questionnaire was 0.94. The Cronbach alpha of knowledge, attitude and practice dimensions in this questionnaire were 0.862, 0.901 and 0.798 respectively. The overall Cronbach alpha of the questionnaire was 0.890, and the half reliability was 0.698. The test-retest reliability of the questionnaire was 0.919, and the test-retest reliability of each dimension was 0.924, 0.917 and 0.845.Conclusions:The questionnaire has good reliability and validity, and can be used to measure the level of knowledge, attitude and practice of Hp infection in physical examination population.