ABSTRACT
OBJECTIVE: To investigate the predictive value of cervical length（CL）changes in spontaneous preterm birth（SPTB）in twin pregnancies in the second and third trimesters of pregnancy.METHODS: A retrospective analysis was made of 166 cases of twin pregnant women who underwent transvaginal ultrasound to measure CL during the second trimester of pregnancy（20~25 weeks）and the third trimester of pregnancy（28~32 weeks）from January 2014 to December 2017 in the Third Hospital of Peking University and Tongzhou Maternal and Child Health Hospital of Beijing.Evaluate the predictive value of CL changes in SPTB before 32 and 34 weeks.The area under the receiver-operating characteristics（ROC）curve was compared by bootstrap method.Assessment of the value of CL in the third trimester of pregnancy and CL in the second trimester of pregnancy alone in predicting SPTB before 32 and 34 weeks.RESULTS: Of the 166 cases,90 were full-term delivery and 76 were premature delivery.The median CL of mid and late pregnancy was 34 mm and 29 mm respectively,and it was 35.5 mm and 31 mm,and in full-term delivery.32.5 mm and21 mm in premature delivery,respectively.There were significant differences among the three groups（All P25 mm and CL shortening≥ 20%,it can better predict preterm birth before 32 weeks.
ABSTRACT
OBJECTIVE: To explore the correlation between health promotion lifestyle and self-efficacy of the nurses.METHODS: By stratified random sampling method,a total of 360 nurses were selected as investigation objects and measured by the Health Promoting Lifestyle Profile-Ⅱ( HPLP-Ⅱ) and General Self-Efficacy Scale( GSES). RESULTS: The total score of HPLP-Ⅱ was 67. 0-194. 0( 110. 8 ± 19. 8). The dimension scores from high to low were as follow: interpersonal relationship scored 13. 0-33. 0( 21. 6 ± 3. 7),nutrition scored 11. 0-35. 0( 20. 4 ± 3. 9),self-realization scored 9. 0-36. 0( 20. 2 ± 4. 4),health responsibility scored 10. 0-31. 0( 18. 0 ± 3. 9),stress management scored 9. 0-32. 0( 16. 6 ± 3. 9),excise training scored 8. 0-32. 0( 14. 1 ± 4. 2). The GSES total score was 10. 0-40. 0( 22. 0 ± 5. 2),the nurses with medium and low level of self-efficacy were 92. 8%( 334 /360). The GSES total score of nurses showed a positive correlation with total HPLP-Ⅱ score,and other dimension scores of interpersonal relationship,nutrition,self-realization,health responsibility,stress management and excise training( the correlation coefficients were 0. 501,0. 420,0. 429,0. 469,0. 381,0. 429 and 0. 354,respectively,P < 0. 05). CONCLUSION: The general self-efficacy of nurses is positively correlated with their health promotion lifestyle. The health promotion lifestyle could be formed by improving the self-efficacy level.