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Objective@#This study aims to investigate the menarcheal age of female junior middle school students in Tianjin and associated factors, providing suggestions for further development of adolescence education on physiological and mental health.@*Methods@#A total of 4 127 junior middle school girls in Tianjin area were selected by stratified random sampling method, and investigated by the method of physical examination and questionnaire survey, results were analyzed.@*Results@#There were 1 383 girls reported menarche. Mean age at menarche was(12.68±1.19) years old; One-way ANOVA showed that girls with higher family income, higher parental education had earlier menarcheal age(F=4.97, 9.52, 10.64, P<0.05). It showed that the tendency that obesity group and over-weight group was higher in the rate of menarche than that of normal group and marasmus group(F=4.20, P<0.05). However, different time on watching TV, computer or celephone and sleeping was found to be unrelated with age at menarche(P>0.05). Kruskal Wallis H test showed that girls whose mothers’ AAM was earlier had earlier menarcheal age(H=82.94, P<0.05). According to age, girls were divided into groups of 10-11, 11-12, 12-13 and 13-14 years old. Girls in each age group were divided into the menstruation menarche group and the non-menstruation menarche group. The results showed that the levels of height, weight, BMI, waist circumference, hip circumference, and the skin fold thickness in menstruation group were higher than those in non-menstruation group(t=2.18-10.93, P<0.05). After that, girls of each group were divided into four group：marasmus group, the normal group, the over-weight group and the obesity group according to BMI(χ2=34.66，13.37，11.09，12.60,P<0.05).@*Conclusion@#Female junior middle school students’ menarcheal age in Tianjin is related to family income, parents’education, mother’s age at menarche, obesity and physical exercise frequency.
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Objective To investigate the relationship of relative telomere length in cumulus cells(CCs) with oocytes at different mature stages and the outcome of intracytoplasmic sperm injection and embryo transfer (ICSI-ET). Methods Oocyte-cumulus complex samples were collected from 92 patients undergoing ICSI-ET and patients were divided into group A including 55 women≤35 years and group B 37 women>35 years. The embryonic development ability and the result of clinical pregnancy were recorded in different groups. DNA was extracted from CCs and assessed for telomere length by real-time quantitative PCR. Results In ICSI-ET,the relative telomere length of CCs gradually shortened with the age.There was a significantly longer telomere length of CCs in the preg-nant subgroup than that in the non-pregnant subgroup in the two groups(P < 0.05). Conclusion The telomere length of CCs may be associated with the pregnancy outcome in ICSI-ET.
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Objective To systematically evaluate the effects of respiratory muscle training by using respiratory muscle training device on rehabilitation of people undergoing cardiothoracic and abdominal surgery. Methods The relevant randomized controlled trials were searched in the databases of the CINAHL, Medline, PubMed, EBSCO, China National Knowledge Infrastructure (CNKI), Wanfang Data, VIP. The quality of studies was critically appraised and data were extracted by two reviewers independently, a meta-analysis was conducted for the included studies. Results Finally 12 randomized controlled trial involving 1060 patients were included. Meta-analysis showed that respiratory muscle training device could improve respiratory muscle strength [SMD =0.70, 95%CI (0.15-1.24)]; improved lung function [forced vital capacity:SMD=0.48, 95%CI (0.10-0.87);inspiratory capacity:SMD=0.55, 95%CI (0.07-1.04)]; improve; effectively reduced postoperative pulmonary complications [OR=0.21, 95%CI:(0.15-0.31)]; shorten the length of hospital stays [SMD=-0.52, 95%CI (-0.87--0.16)], all P< 0.05. Conclusions The application of respiratory muscle training with respiratory muscle device could promote the rehabilitation of patients undergoing cardiothoracic and abdominal surgery.
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Objective To analyze the effects of fertilization methods and sperm sources in intra‐cytoplasmic sperm injection (ICSI) on the developmental capacity of surplus embryos .Methods A retrospective study was carried out to compare the blasto‐cyst rate of the surplus embryos from 2 697 patients .According to the fertilization methods ,the embryos were divided into IVF group and ICSI group .According to sperm sources ,the ICSI group was divided into ejaculated group and testicular sperm group . The rates of blastocyst formation and good quality blastocysts were compared between different fertilization methods and sperm sources .Results There were 8 426 embryo developed in 2 697 patients .The blastocyst formation rate of surplus embryos was high‐er in the IVF group(n=1 048 ,53 .18% ) than that in the ICSI group(n=1 378 ,49 .27% ) ,but with no statistically significant differ‐ent(P> 0 .05) .The rates of blastocyst were not statistically significant different between the IVF group and in the rescue ICSI group(P>0 .05) .The rates of blastocyst were not statistically significant different between the ejaculated group and the testicular sperm group(P>0 .05) .Conclusion There were not statistically significant different of the rate of blastocyst between different fer‐tilization methods and sperm sources in ICSI .
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ObjectiveTo observe the treatment effects and importance of dinoprostone suppository in promoting cervical ripening during induction of labor for full-term pregnancy and nursing points. Methods92 cases of pregnancies in the obstetrics and gynecology department of our hospital from December 2009 to January 2011 were selected and randomly divided into the observation group and the control group with 46 cases in each group.The observation group was given dinoprostone suppository for induction of labor,while the control group was given induction of labor by pitocin.The curative effects of these two drugs in cervical ripening in labor induction were compared. ResultsThe curative effects of the observation group were obvious,the cervical score of the observation group 12 h after medication was obviously higher.than that before the treatment,and compared with the control group,there were significant differences.The labor time,the total production process and delivery time of the observation group were all obviously lower than those of the control group.The successful induction rate was 91.3％ in the observation group,which was obviously higher than 80.4％ of the control group. ConclusionsThe dinoprostone suppository is suitable for cervical mature during induction of labor for full-term pregnancy,and it is safe,controllable and has good effects.
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ObjectiveToinvestigateifthereisTh1/Th2imbalanceofperipheralThcellsinpatientswithrecurrentgenitalherpes(RGH),andtheroleofTh1/Th2inthepathogenesisofRGH.MethodsFlowcytometricanalysiswasemployedtostudyintracellularcytokines(IFN-?,IL-4)andsurfaceantigen(CD4)ofTcellsintheperipheralbloodof33patientswithRGHand15healthyvolunteers.ResultsThemeanTh1/Th2ratioofRGHpatientsdecreasedsignificantlythanthatofhealthycontrols(P