目的 研究二次剖宫产后续妊娠的分娩方式。方法 选取广州市妇女儿童医疗中心2015年8月1日—2017年12月31日的第三次及以上妊娠孕妇资料,要求前两次均为剖宫产,本次妊娠为头位单胎。分析本次妊娠相关因素及最终分娩方式、妊娠结局及围产儿情况。结果 二次剖宫产后阴道分娩与急诊、择期剖宫产相比,三组子宫破裂、新生儿窒息等的发生率差异无统计学意义。成功阴道分娩者本次均为自然临产。结论 二次剖宫产后,第三次妊娠分娩方式的选择包括顺产及剖宫产,在妊娠结局、母儿并发症方面差异无统计学意义,有阴道试产史是成功阴道分娩的有利因素。孕妇尤其是自然临产孕妇可在严密监护下选择阴道试产。

Objective To study the delivery mode after two previous cesareans. Methods We selected pregnant women, single cephalic, following two previous cesareans in Guangzhou Women and Children Medical Center, from August 1, 2015 to December 31, 2017. Analysis of this pregnancy related factors and final delivery mode, the maternal and fetal morbidities were studied. Results There wasn't statistical significance in the incidence of uterine rupture, neonatal asphyxia among vaginal birth after two previous cesareans, selected cesarean section and emergency cesarean section. And the success cases of vaginal delivery are natural labor. Conclusion The delivery modes after two previous cesareans include vaginal delivery and cesarean section. There are no statistical significance in pregnancy outcomes. Vaginal trial history are the favorable factors of successful vaginal delivery. Especially in pregnant women with natural vaginal labor we can choose vaginal delievery under intensive care.

目的 分析于剖宫产产妇围手术期实施针对性护理对其切口感染率及不良情绪的影响。方法 选取2015年6月—2016年4月于我院择期行剖宫产术的102例产妇,通过随机数表法分为观察组与对照组,各51例。给予对照组常规护理,在此基础上观察组给予针对性护理干预。对比两组术后恢复情况、护理前后疼痛评分(VAS)、抑郁评分(SDS)及焦虑评分(SAS)变化情况,并统计两组并发症发生率、护理满意度。结果 观察组肛门排气时间、切口愈合时间、24 h睡眠时间、住院时间、下床活动时间均少于对照组,差异有统计学意义(P＜0.05);护理前两组SAS评分、SDS评分、VAS评分间无明显差异(P＞0.05),经护理干预,观察组SAS评分、SDS评分、VAS评分低于对照组,差异有统计学意义(P＜0.05);两组切口感染率、并发症发生率(1.96%、7.84%)低于对照组(15.69%、31.37%),差异有统计学意义(P＜0.05);两组护理满意度对比,观察组(98.04%)高于对照组(82.35%),差异有统计学意义(P＜0.05)。结论 给予剖宫产围术期产妇针对性护理疗效确切,可缓解不良情绪,减轻疼痛感,促使机体功能及早康复,减少切口感染与并发症发生。

       肿瘤治疗仍然是生物医学研究的一个突出领域。围绕各种化学治疗（化疗）药物和其他治疗药物的不良反应和靶向疗效的研究推动了各种药物载体的发展。这些载体聚焦于提高肿瘤部位的药物浓度，最大限度地减少全身不良反应，并改善治疗效果。在已报道的递送系统中，可注射水凝胶由于其微创的药物递送特性，已成为化疗药物体内递送的重要载体形式。文章系统地总结了可注射水凝胶的类型和特征，并进一步概括了可注射水凝胶装载药物的方式，同时深入讨论可注射水凝胶在治疗肿瘤的各种药物的递送应用。文章对原位注射水凝胶在治疗肿瘤方面存在的潜在性挑战和可能的解决方案提供了动态前瞻性的参考。可注射的水凝胶作为药物传递系统用于肿瘤治疗具有良好的发展前景。

       Tumor treatment remains a prominent area of biomedical research．The  researches surrounding the adverse 

reactions and targeted efficacy of various chemotherapy drugs and other therapeutic drugs have driven the development of various drug carriers．These carriers focus on increasing drug concentration at tumor site，minimizing systemic adverse reactions，and improving treatment outcomes．In the reported delivery systems，injectable hydrogels have become an important carrier for the delivery of chemotherapeutic drugs in vivo due to their minimally invasive characteristics．This review systematically summarized the types and characteristics of injectable hydrogels，and further summarized their drug loading methods．At the same time，the application of injectable hydrogels in the delivery of various drugs for tumor treatment was discussed in depth．This  review provides dynamic and prospective reference for the potential challenges and possible solutions of the in situ injectable hydrogels for tumor therapy．Injectable hydrogels as drug delivery systems are with good prospects for tumor treatment．

       目的   探讨剖宫产后再次分娩阴道试产失败的影响因素。方法   选取2021年5月—2024年5月在枣庄市妇幼保健院分娩的138例有剖宫产手术史的足月妊娠产妇进行回顾性分析。所有产妇依照其阴道试产结果将成功阴道分娩的35例产妇分为成功组，将阴道试产失败中转剖宫产的103例产妇分为失败组。对比两组产妇的妊娠结局、孕期情况及围产期情况，最后采用多因素Logistic回归分析法分析剖宫产后再次分娩阴道试产失败的影响因素。结果   两组产妇子宫破裂、胎儿窘迫、产褥感染及产后出血等妊娠不良结局总发生率对比差异无统计学意义（11.43% vs 6.80%，χ ² =0.760，P=0.382 ＞0.05）；通过对比两组产妇孕期情况发现，失败组与成功组孕妇年龄、孕次、身高、孕前体质量、妊娠期合并症、分娩前体质量指数（BMI）比较差异无统计学意义（P＞0.05），失败组与成功组孕妇孕期体质量增长［（4.56±2.56）kg vs（12.45±3.24）kg］、分娩孕周［（39.46±1.25）周 vs（37.95±1.37）周］、阴道分娩史（8.57% vs 26.21%）、妊娠间隔时间［（2.74±0.35）年 vs（3.37±0.57）年］及瘢痕厚度［（4.51±0.56）mm vs（5.42±0.38）mm］，对比差异有统计学意义（t=3.497，P＜0.001；t=5.755，P＜0.001；χ ² =4.780，P=0.029；t=6.148，P＜0.001；t=10.764，P＜0.001）；通过对比两组产妇围产期情况发现，失败组与成功组新生儿性别、是否镇痛比例比较差异无统计学意义（P＞0.05），失败组与成功组孕妇产前新生儿估重［（3352.31±153.67）g vs（3046.25±141.68）g］、是否引产［60.00% vs 52.43%］、胎膜早破［11.43% vs 35.92%］、入院时是否临产［857% vs 27.18%］，对比差异有统计学意义（t=10.805，P＜0.001；χ ² =7.330，P=0.007；χ ² =7.500，P=0.006；χ ² =5.200，P=0.023）；以阴道试产情况作为因变量（失败=1，成功=0）纳入Logistic回归模型，结果显示，分娩孕周过晚、产前新生儿估重过高、引产及入院时未临产为剖宫产后再次分娩阴道试产失败的影响因素（P＜0.05）。结论   分娩孕周过高、产前新生儿估重过高、引产及入院时未临产为剖宫产后再次分娩阴道试产失败的独立影响因素，需针对分娩孕周、产前新生儿估重过高的剖宫产后再次分娩阴道试产产妇给予高度关注并采取相应措施进行干预，同时自然临产能够降低阴道试产失败风险，但针对具有引产指征的产妇，依然需要及时引产。

       Objective   To explore the influencing factors of vaginal trial delivery failure after cesarean section．Methods   A retrospective analysis was conducted on 138 full-term pregnant women with a history of cesarean section who gave birth in our hospital from May 2021 to May 2024．All women were divided into two groups according to the  results of their vaginal trial delivery．Based on their vaginal trial results，35 parturients who successfully delivered were divided into the successful group，and 103 parturients who failed vaginal trial delivery and transitioned to cesarean section were divided into the failed group．The pregnancy outcomes of postpartum women and the pregnancy and perinatal conditions were compared between the two groups，and multivariate Logistic  regression analysis was used to analyze the independent influencing factors of vaginal trial delivery failure after cesarean section．Results   There was no significant difference in the total incidence of adverse pregnancy outcomes such as uterine rupture，fetal distress，postpartum infection，and postpartum hemorrhage between the two groups of parturients （P＞0.05）．By comparing the pregnancy status of two groups of  pregnant women，it was found that there was no difference （P＞0.05）．The average weight gain during pregnancy of failure and successful group，gestational age，cases with vaginal delivery history，intervalbetween pregnancy and scar thickness，the contrast difference was significant （all P＜0.05） ．By comparing the perinatal situation of the two groups，there was no difference in the sex of fetus and analgesia receiving of parturients between the failed group and the successful group （P＞0.05），while there is difference in weight estimation，whether induced labour，premature  rupture of fetal membrane，whether admitted to hospital （all P＜0.05）．Vaginal trial delivery was set as the dependent variable （failure=1，success=0） and it was incorporated into the Logistic regression model．The results showed that high gestational age during delivery，high estimated weight of fetus before delivery，induction of labor，and non-labor upon admission were independent influencing factors for vaginal trial delivery failure after cesarean section （P＜0.05）．Conclusions  Excessive gestational age，high estimated weight of fetus before delivery，induced labor，and non-labor upon admission were independent influencing factors for the failure of vaginal trial delivery after cesarean section．It is necessary to pay high attention and take corresponding measures to intervene in women who have undergone vaginal trial delivery after cesarean section due to excessive gestational age and high estimated weight of fetus before delivery．At the same time，spontaneous labour can reduce the risk of vaginal trial delivery failure．However，for women with indications for induced labor，timely induction is still necessary．

       目的   探讨阴道分娩后尿失禁患者疾病应对方式的影响因素。方法   选取2022年1月—2023年1月医院收治的阴道分娩后尿失禁患者78例，评估所有患者的应对方式，根据结果分为积极应对组与消极应对组，设计基线资料调查表，详细统计两组患者的基线资料并比较，重点分析阴道分娩后尿失禁患者疾病应对方式的影响因素。结果   经评估，78例阴道分娩后尿失禁患者疾病消极应对有40例，占比51.28%；积极应对组与消极应对组患者的产次（χ ² =4.110，P=0.043）、文化水平（Z=2.094，P=0.036）、家庭关怀度（Z=2.069，P=0.040）与自我效能（Z=2.249，P=0.025）比较差异有统计学意义，组间年龄（t=0.096，P=0.924）、孕次（t=1.257，P=0.212）、体质指数（BMI）（t=0.125，P=0.901）、工作（χ ² =0.778，P=0.378）、家庭月人均收入（χ ² =0.044，P=0.834）、漏尿（χ ² =0.040，P=0.842）比较差异无统计学意义；经回归分析发现，家庭关怀度低（OR=1.799，P=0.041）、自我效能低（OR=1.942，P=0.026）、经产妇（OR=2.554，P=0.045）及文化水平低（OR=1.837，P=0.038）均是阴道分娩后尿失禁患者疾病应对方式的影响因素。结论   阴道分娩后尿失禁患者疾病消极应对风险高，可能与产次、文化水平、家庭关怀度及自我效能有关。

       Objective To explore the influencing factors of disease coping strategies in patients with urinary incontinence after vaginal delivery．Methods A total of 78 patients with urinary incontinence after vaginal delivery admitted to the hospital from January 2022 to January 2023 were selected．The coping strategies of all patients were evaluated，and they were divided into a positive coping group and a negative coping group based on the results．A baseline data questionnaire was designed，and the baseline data of the two groups of patients were compared in detail．The focus was on analyzing the factors influencing the disease coping strategies of patients with urinary incontinence after vaginal delivery．Results After evaluation，40 out of 78 patients with urinary incontinence after vaginal delivery had negative coping strategies，accounting for 51.28%．The parity of patients in the positive and negative coping groups（χ ² =4.110，P=0.043），educational level（Z=2.094，P=0.036），family care（Z=2.069，P=0.040），and self-efficacy（Z=2.249，P=0.025）among the groups were different．Age between groups（t=0.096，P=0.924），gestational age（t=1.257，P=0.212），body mass index（t=0.125，P=0.901），and work experience（χ ² =0.778，P=0.378），monthly per capita income of households（χ ² =0.044，P=0.834），urinary leakage（χ 2 =0.040，P=0.842）had no statistically significant difference in comparison．Through regression analysis，it was found that low family care（OR=1.799，P=0.041），low self-efficacy（OR=1.942，P=0.026），postpartum women（OR=2.554，P=0.045），and low educational level（OR=1.837，P=0.038）were all influencing factors on the disease coping strategies of patients with urinary incontinence after vaginal delivery．Conclusions  Patients with urinary incontinence after vaginal delivery have a higher risk of negative coping with the disease，which may be related to parity，educational level，family care and self-efficacy．