目的：探讨孕期心理弹性支持与产后患者应对方式的关系，并检验心理弹性在其中的中介效应。方法：采用便利抽样法，于2025年3月-2026年3月选取350例产后1～6个月的患者为研究对象。采用一般资料调查表、孕期心理弹性支持量表、心理弹性量表及简易应对方式量表进行回顾性调查。采用Pearson相关分析变量间关系，分层回归检验总效应，PROCESS宏Model 4结合Bootstrap法检验中介效应。结果：孕期心理弹性支持与积极应对呈显著正相关（r=0.30，P<0.01），与消极应对呈显著负相关（r=-0.21，P<0.01）。孕期心理弹性支持对积极应对的正向预测作用显著（β=0.28，P<0.001），对消极应对的负向预测作用显著（β=-0.19，P<0.001）。心理弹性在孕期心理弹性支持与积极应对间的间接效应为0.12（95%CI：0.08～0.17），在消极应对间的间接效应为-0.07（95%CI：-0.11～-0.04）。结论：孕期心理弹性支持对产后应对方式的影响完全通过心理弹性的中介作用实现，提示围产期心理保健应将外部支持内化为产妇心理资源，增强心理弹性，以促进产后积极应对。

Objective: To explore the relationship between prenatal psychological resilience support and coping styles of postpartum patients, and to examine the mediating effect of psychological resilience. Methods: Convenience sampling was used to recruit 350 patients at 1-6 months postpartum from March 2025 to March 2026. A retrospective survey was conducted using a general information questionnaire, the Prenatal Psychological Resilience Support Scale, the Connor-Davidson Resilience Scale (CD-RISC), and the Simplified Coping Style Questionnaire (SCSQ). Pearson correlation analysis was performed to examine relationships among variables, hierarchical regression analysis was conducted to test the total effect, and the PROCESS macro Model 4 with bootstrapping was employed to test the mediating effect. Results: Prenatal psychological resilience support was significantly positively correlated with positive coping (r = 0.30, P<0.01) and significantly negatively correlated with negative coping (r=?0.21, P<0.01). Prenatal psychological resilience support significantly and positively predicted positive coping (β = 0.28, P<0.001) and significantly and negatively predicted negative coping (β=?0.19, P<0.001). The indirect effect of psychological resilience between prenatal psychological resilience support and positive coping was 0.12 (95% CI: 0.08-0.17), and the indirect effect between prenatal psychological resilience support and negative coping was ?0.07 (95% CI: ?0.11 to ?0.04); the direct effects were not significant, indicating a full mediating role of psychological resilience. Conclusion: The impact of prenatal psychological resilience support on postpartum coping styles is fully mediated by psychological resilience, suggesting that perinatal mental health care should focus on internalizing external support into maternal psychological resources and enhancing psychological resilience to promote positive postpartum coping.

目的：探讨小儿腹部术后患儿父母压力感知、心理弹性与创伤后成长的关系，并检验心理弹性在压力感知与创伤后成长间的中介效应。方法：采用回顾性研究设计，选取2024年3月至2025年12月在河南省儿童医院小儿外科行腹部手术的286名患儿父母。采用一般资料调查表、压力感知量表（PSS-10）、心理弹性量表（CD-RISC）和创伤后成长量表（PTGI）进行问卷调查。运用Pearson相关分析变量间相关性，采用Hayes PROCESS宏程序模型4检验中介效应，Bootstrap法抽样5 000次计算间接效应95%置信区间。结果：患儿父母压力感知得分为（22.84±5.61）分，心理弹性得分为（63.57±12.42）分，创伤后成长得分为（58.92±15.33）分。母亲压力感知得分高于父亲，心理弹性得分低于父亲（均P<0.001）。压力感知与心理弹性呈显著负相关（r=-0.46，P<0.01），与创伤后成长呈显著负相关（r=-0.39，P<0.01）；心理弹性与创伤后成长呈显著正相关（r=0.51，P<0.01）。控制术后时间与疾病类型后，心理弹性在压力感知与创伤后成长间起部分中介作用，间接效应值为-0.58（95%CI：-0.74～-0.43），占总效应的54.7%。结论：小儿腹部术后患儿父母的压力感知可直接影响创伤后成长，亦可通过心理弹性的中介作用间接影响创伤后成长。临床护理中应重视评估父母心理弹性水平，通过心理干预增强其应对资源，从而促进创伤后成长。

目的：探讨闭合复位弹性髓内钉固定术（CR-ESIN）对股骨骨折患儿康复进程及关节功能的影响。方法：回顾性选取2024年4月~2025年6月至我院行内固定术治疗的102例股骨骨折患儿为研究对象，依据手术方案不同，将行CR-ESIN治疗的51例患儿列为CR-ESIN组，将剩余51例行传统切开复位接骨板内固定术（ORIF）治疗的患儿列为ORIF组，比较两组患儿的治疗情况、康复进程，手术并发症发生情况，关节功能恢复情况及内固定物取出阶段负担。结果：在不同手术方案下，CR-ESIN组的手术耗时、术中出血量、术后住院时间、支具使用时间、完全负重时间分别为（60.29±5.44）min、（50.52±5.49）mL、（6.22±1.34）d、（4.15±1.33）周、（6.81±1.34）周，均低于ORIF组[（76.33±8.29）min、（190.48±20.51）mL、（8.17±1.65）d、（6.32±1.48）周、（7.82±2.17）周]（t=11.552，47.076，6.552，8.322，2.828；P＜0.05）。CR-ESIN组的手术并发症发生率5.88%（3/51）低于ORIF组19.61%（10/51）（x2=4.320；P＜0.05）。CR-ESIN组的髋关节前屈活动度、后伸活动度、儿童下肢功能量表（PODCI）评分分别为（132.44±22.52）°、（20.39±4.47）°、（75.14±6.29）分，均高于ORIF组[（120.28±20.37）°、（17.55±3.12）°、（70.31±5.36）分]，术后双侧股骨长度差（1.52±0.39）cm低于ORIF组（3.08±0.44）cm（t=2.860，3.721，4.174，18.948；P＜0.05）。CR-ESIN组的取出手术切口长度、取出手术耗时、取出手术出血量、再骨折率均低于ORIF组（t/x2=31.706，8.298，38.448，4.883；P＜0.05）。结论：CR-ESIN能提高股骨骨折患儿手术效率并降低出血风险，与传统ORIF相比，此术式有利于加快患儿康复进程、降低术后并发症发生率、促进关节功能恢复并减轻内固定物取出阶段负担。

Objective:To explore the effects of closed reduction elastic intramedullary nail fixation (CR-ESIN) on the rehabilitation process and joint function of children with femoral fractures.Methods:A retrospective study was conducted on 102 children with femoral fractures who underwent internal fixation surgery in our hospital from April 2024 to June 2025. Based on different surgical plans, 51 children who underwent CR-ESIN treatment were included in the CR-ESIN group, and the remaining 51 children who underwent traditional open reduction plate internal fixation (ORIF) treatment were included in the ORIF group. The treatment status, rehabilitation process, incidence of surgical complications, joint function recovery, and burden during the removal of internal fixation materials were compared between the two groups of children.Results:Under different surgical plans, the surgical time, intraoperative blood loss, postoperative hospitalization time, brace use time, and complete weight-bearing time of the CR-ESIN group were (60.29 ± 5.44) min, (50.52 ± 5.49) mL, (6.22 ± 1.34) d, (4.15 ± 1.33) weeks, and (6.81 ± 1.34) weeks, lower than the ORIF group [(76.33 ± 8.29) min, (190.48 ± 20.51) mL, (8.17 ± 1.65) d, (6.32 ± 1.48) weeks, and (7.82 ± 2.17) weeks] (t=11.552，47.076，6.552，8.322，2.828; P<0.05). The incidence of surgical complications in the CR-ESIN group was 5.88% (3/51) lower than the ORIF group 19.61% (10/51) (x2=4.320; P<0.05). The hip flexion range of motion, extension range of motion, and PODCI scores of the CR-ESIN group were (132.44 ± 22.52) °, (20.39 ± 4.47) °, and (75.14 ± 6.29) points, higher than the ORIF group [(120.28 ± 20.37) °, (17.55 ± 3.12) °, and (70.31 ± 5.36) points]. The length difference between the bilateral femurs was (1.52 ± 0.39) cm, which was lower than the ORIF group (3.08 ± 0.44) cm (t=2.860，3.721，4.174，18.948; P<0.05). The length of the surgical incision, the duration of the extraction surgery, the amount of bleeding during the extraction surgery, and the rate of re fracture in the CR-ESIN group were all lower than the ORIF group (t/x2=31.706，8.298，38.448，4.883; P<0.05).Conclusion:CR-ESIN can improve the surgical efficiency and reduce the risk of bleeding in children with femoral fractures. Compared with traditional ORIF, this procedure is beneficial for accelerating the recovery process of children, reducing the incidence of postoperative complications, promoting joint function recovery, and reducing the burden of internal fixation removal stage.

目的 探讨超声弹性成像联合高频超声在甲状腺乳头状癌诊断中的应用价值。方法 2022年1月—2023年6月选择在中国人民解放军联勤保障部队第九九〇医院诊治的疑似甲状腺乳头状癌患者82例,所有患者均给予超声弹性成像联合高频超声检查,记录超声特征。所有患者均行病理检查,并以病理检查作为判断的金标准。结果 在82例患者中,病理诊断为甲状腺乳头状癌48例（癌性组）,占比58.54%;甲状腺良性结节34例（良性组）,占比41.46%。癌性组的形态异常、后方回声衰减、钙化、晕环征、边界不清晰、内部低回声等超声征象占比为81.25%、83.33%、83.33%、83.33%、81.25%、81.25%,高于良性组的52.94%、47.06%、47.06%、41.18%、47.06%、52.94%（P<0.05）。癌性组的收缩期最高流速低于良性组（P<0.05）,阻力指数、搏动指数与良性组相比有提高（P<0.05）。癌性组的弹性成像评分多为3~4分,良性组多为2分,两组比较差异有统计学意义（P<0.05）。超声弹性成像联合高频超声判断为甲状腺乳头状癌47例,诊断中的灵敏度与特异度分别为97.92%（47/48）和100.00%（34/34）。结论 甲状腺乳头状癌在超声上多表现为血流信号异常、钙化、后方回声衰减、晕环征等特征,超声弹性成像评分多为3~4分,超声弹性成像联合高频超声在其诊断中具有较高的应用价值。

Objective To explore the application value of ultrasound elastography combined with high-frequency ultrasound in the diagnosis of papillary thyroid cancer（PTC）．Methods From January 2022 to June 2023,82 patients with suspected PTC were treated at Chinese People’s Liberation Army Joint Logistics Force 990 Hospital．All patients were given ultrasound elastography combined with high-frequency ultrasound examination to record ultrasound features．All cases were given pathological examination,and the pathological examination were used as the gold standard for diagnosis．Results Among the 82 patients,48 were PTC（cancerous group）,accounting for 58.54%;and the other 34 were benign thyroid nodules（benign group）,accounting for 41.46%．The proportion of morphological abnormalities,posterior echo attenuation,calcification,halo ring signs,unclear boundary and internal hypoechoics in cancerous group were 81.25%,83.33%,83.33%,83.33%,81.25% and 81.25%,which were significantly higher than 52.94%,47.06%,47.06%,41.18%,47.06% and 52.94% in the benign group（P<0.05）．The highest systolic flow velocity in the cancerous group was significantly less than that in the benign group（P<0.05）,and the resistance index and pulse index were also significantly higher compared with the benign group（P<0.05）．The elastography score were mostly 3~4 in the cancerous group and 2 in the benign group,with a significant difference between the two groups（P<0.05）．Forty-seven cases of PTC were diagnosed by ultrasound elastography combined with high frequency ultrasonography,and the sensitivity and specificity in diagnosis were 97.92%（47/48）and 100.00%（34/34）,respectively．Conclusions PTC is often characterized by abnormal blood flow signals,calcification,posterior echo attenuation,halo sign and so on．The ultrasound elastography score is usually 3~4 points．Ultrasonic elastography combined with high frequency ultrasound has high value in diagnosis of PTC．

目的 探讨大一护理系学生（护生）心理健康素养、心理健康与心理弹性的现状以及三者之间的关系。方法 采用方便抽样法选取大一护生202人作为研究对象,采用一般资料问卷、青少年心理健康素养评定量表（AMHLAQ）、心理健康量表（K10）,心理弹性量表（CD-RISC）进行调查。结果 （1）城市大一护生心理健康素养（t=-2.832,P<0.01）、心理健康水平（t=3.052,P<0.001）和心理弹性水平（t=-2.521,P<0.05）高于农村大一护生;独生子女的心理健康素养（t=2.098,P<0.05）和心理健康水平（t=-2.684,P<0.01）高于非独生;父亲学历为高中及以上的心理健康素养（t=-2.543,P<0.05）和心理健康水平（t=3.082,P<0.01）高于父亲学历为初中及以下;母亲学历为高中及以上的心理健康素养（t=-2.052,P<0.05）和心理健康水平（t=2.595,P<0.01）高于父亲学历为初中及以下;（2）心理健康得分越高,心理问题越严重,心理健康素养与心理弹性呈正相关（r=0.340,P<0.01）,心理健康得分与心理健康素养、心理弹性呈负相关（r=-0.651,-0.384,P<0.01）。（3）心理弹性在心理健康素养与心理健康中存在部分中介效应,中介效应值为-0.190,中介效应占比15.68%。结论 山西医科大学汾阳学院大一护生心理健康存在一定问题,要多注重农村地区、非独生子女以及父母学历较低的人群心理健康和心理健康素养的培养,大一护生心理健康素养越高,心理弹性水平越高,心理健康得分越低,心理健康水平越高。心理弹性在心理健康素养与心理健康中起中介作用,可以提升大一护生的心理弹性水平,培养其坚韧性、自强性和乐观性,从而降低心理健康得分,提高心理健康水平。

Objective To explore the current status of mental health literacy,mental health,and psychological resilience among first-year nursing students,as well as the relationship among the three．Methods A total of 202 freshmen were selected as the research subjects using convenience sampling method．The survey was conducted using a general information questionnaire,the Adolescent Mental Health Literacy Assessment Scale（AMHLAQ）,the Mental Health Scale（K10）,and the Psychological Resilience Scale（CD-RISC）．Results （1）The mental health literacy（t=-2.832,P<0.01）,mental health level（t=3.052,P<0.001）,and psychological resilience level（t=-2.521,P<0.05）of urban freshmen were significantly higher than those of rural freshmen．The mental health literacy（t=2.098,P<0.05）and mental health level（t=-2.684,P<0.01）of only-child were higher than those of non-only-child．The mental health literacy（t=-2.543,P<0.05）and mental health level（t=3.082,P<0.01）of the father with a high school education or above were higher than those of the father with a middle school education or below．The mental health literacy（t=-2.052,P<0.05）and mental health level（t=2.595,P<0.01）of the mother with a high school education or above were higher than those of the father with a middle school education or below．（2）The higher the mental health score,the more serious the psychological problem．There was a significant positive correlation between mental health literacy and psychological resilience（r=0.340,P<0.01）,while there was a significant negative correlation among mental health score and mental health literacy and psychological resilience（r=-0.651,-0.384,P<0.01）．（3）Psychological resilience had a partial mediating effect between mental health literacy and mental health,with a mediating effect value of -0.190,accounting for 15.68% of the total．Conclusions There are certain problems with the mental health of freshmen nursing students in Shanxi Medical University．It is necessary to pay more attention to the cultivation of mental health and mental health literacy in rural areas,non-only-child,and those whose parents with lower educational level．The higher the mental health literacy and resilience level of freshmen nursing students,the lower their mental health scores,and the higher their mental health level．Psychological resilience plays a mediating role in the relationship between mental health literacy and mental health．It can cultivate the level of psychological resilience,resilience,self-improvement and optimism of first-year nursing students,thereby reducing their mental health scores and improving their mental health level．

目的 探讨院外延续性护理联合院内心理指导对重症烧伤患者创伤应激的影响。方法 选取2020年6月—2022年6月南开大学附属医院（天津市第四医院）重症烧伤科收治的86例重度烧伤患者为研究对象,应用随机数字表法将患者分为观察组与对照组,每组各43例。对照组采取常规护理,观察组在常规护理基础上增加院外延续性护理联合院内心理指导,评估患者的创伤应激指标[血清肿瘤坏死因子α（TNF-α）、白细胞介素6（IL-6）、β-内啡肽（β-ep）]、心理韧性程度、应对行为、创伤后成长水平,并分析患者创伤应激与心理韧性的相关性。结果 干预前,两组的TNF-α、IL-6、β-ep水平比较差异无统计学意义（P>0.05）;干预后,两组创伤应激相关指标水平均下降,且观察组降低幅度更大（P<0.05）。干预后,两组患者乐观性、力量性、坚韧性相关中文版创伤后成长评定量表（C-PTGI）评分均升高,且观察组更高（P<0.05）;Pearson相关性分析显示,TNF-α、IL-6、β-ep等创伤应激指标水平与心理韧性水平呈负相关（P<0.05）;干预后,两组患者积极应对特质应对方式问卷（TCSQ）评分均升高,观察组高于对照组,人消极应对评分均降低,观察组低于对照组（P<0.05）;干预后,两组患者人际关系、精神变化、生活欣赏、个人力量、新的可能相关C-PTGI评分分量表得分均升高,观察组高于对照组（P<0.05）。结论 对重度烧伤患者采取院外延续性护理联合院内心理指导能够降低患者的创伤后应激水平、消极应对评分,提升患者心理韧性程度、创伤后成长水平以及积极应对评分,且创伤后应激水平与心理韧性水平呈负相关。

Objective To explore the effect of out-hospital continuous nursing combined with in-hospital psychological guidance on traumatic stress in severe burn patients．Methods A total of 86 patients with severe burn treated in the Affiliated Hospital of Nankai University（Tianjin Fourth Hospital）from June 2020 to June 2022 were selected as the research objects．The patients were divided into observation group and control group by random number table method,with 43 cases in each group．The control group received routine care,and the observation group was supplemented with out-hospital continuous nursing and in-hospital psychological guidance on the basis of routine care．The traumatic stress indexes [serum tumor necrosis factor-α（TNF-α）,interleukin-6（IL-6）,β-endorphin（β-ep）],psychological toughness,coping behavior and post-traumatic growth level of the patients were evaluated．The correlation between traumatic stress and mental toughness was analyzed．Results Before intervention,the levels of TNF-α,IL-6 and β-ep were not significantly different between the two groups（P>0.05）．After intervention,the levels of traumatic stress-related indicators were decreased between the two groups,and the reduction was greater in the observation group（P<0.05）．After intervention,C-PTGI scores related to optimism,strength and fortitude were increased in both groups,which were higher in observation group（P<0.05）．Pearson correlation analysis showed that the levels of TNF-α,IL-6,β-ep and other traumatic stress indexes were significantly negatively correlated with the levels of mental toughness（P<0.05）．After intervention,the positive coping TCSQ scores of both groups were increased,the observation group was higher,and the negative coping scores were decreased,while the observation group was lower（P<0.05）．After the intervention,the scores of interpersonal relationships,mental changes,life appreciation,personal strength,and new possibly relevant C-PTGI score subscale were increased in both groups,and higher in the observation group（P<0.05）．Conclusions The combination of out-hospital continuous nursing and in-hospital psychological guidance for severe burn patients can reduce the level of post-traumatic stress and negative response score of patients,and improve the level of mental toughness,post-traumatic growth and positive score of patients,and the level of post-traumatic stress is significantly negatively correlated with the level of mental toughness．

目的 分析宫颈弹性成像(UE)参数在宫颈机能不全(CIC)孕妇妊娠结局中的预测价值。方法 选取我院收治的119例(2019年10月—2021年8月)CIC孕妇,根据妊娠结局分为早产组(孕周＜37周)56例、正常组(孕周≥37周)63例,均于孕20～24周接受阴道超声、宫颈UE检查,获取宫颈长度(CL)、宫颈UE参数[超声弹性对比指数(ECI)、宫颈外口弹性应变率(EOS)、宫颈内口弹性应变率(IOS)]并进行比较,以了解宫颈UE参数在CIC孕妇妊娠结局中的应用价值。结果 早产组CL水平较正常组低,ECI、IOS、EOS水平较正常组高(P＜0.05);单因素分析发现,CL、ECI、IOS、EOS均可对CIC孕妇妊娠结局产生影响(P＜0.05);受试者工作特征(ROC)曲线结果显示,CL、ECI、EOS、IOS预测CIC孕妇早产的AUC分别为0.616、0.765、0.728、0.814,敏感度分别为64.29%、75.00%、73.21%、82.14%,特异度分别为42.86%、52.38%、57.14%、42.86%。结论 宫颈UE参数能有效反映宫颈组织情况,对CIC孕妇妊娠结局具有一定的预测价值。

目的 探讨子宫瘢痕的超声弹性成像结合厚度分析对剖宫产后再妊娠产妇子宫破裂的预测应用。方法 选择2020年1月—2021年12月在中山市中医院分娩的剖宫产术后再次妊娠经阴道分娩（VBAC）产妇作为研究对象。根据纳入和排除标准,共纳入子宫破裂的VBAC产妇32例、非子宫破裂的VBAC产妇90例。通过住院病历信息系统查询研究对象的基本信息及其在妊娠晚期（≥37周）用B超对研究对象行子宫瘢痕厚度和弹性的测量结果,采用受试者工作特征曲线（ROC）曲线分析子宫瘢痕厚度和弹性SI值对子宫破裂的预测作用。结果 子宫破裂组中年龄>35岁、妊娠>2次、与上次剖宫产间隔<2年、新生儿体质量≥3 kg、单层缝合者的比例高于非子宫破裂组（P<0.05）。122例产妇子宫瘢痕厚度的均值为（3.42±0.49）mm,SI的均值为（2.57±0.45）。ROC曲线分析结果显示：子宫瘢痕厚度单独预测子宫破裂的曲线下面积（AUC）为0.805（95%CI：0.730~0.880,P<0.05）,cut off值为3.05 mm,灵敏度为0.726,特异度为0.910,约登指数为0.636;子宫瘢痕SI单独预测子宫破裂的AUC为0.730（95%CI：0.635~0.824,P<0.05）,cut off值为2.11,灵敏度为0.767,特异度为0.781,约登指数为0.548;子宫瘢痕厚度联合预测子宫破裂的AUC为0.874（95%CI：0.812~0.937,P<0.01）,灵敏度为0.875,特异度为0.811,约登指数为0.686。子宫瘢痕厚度结合子宫瘢痕SI值预测子宫破裂的AUC高于单独使用子宫瘢痕厚度（Z=7.611,P=0.041）和子宫瘢痕SI值（Z=25.864,P=0.025）。结论 子宫瘢痕的超声弹性成像SI值联合子宫厚度可有效提高超声对于VBAC产妇子宫破裂的预测效能,具有一定的应用意义。

Objective To study the application of ultrasound elasticity imaging combined thickness analysis of uterine scar in predicting uterine rupture in women pregnant after cesarean section．Methods Pregnant women with vaginal birth after cesarean（VBAC）from January 2020 to December 2021 in Zhongshan Hospital of Traditional Chinese Medicine were selected as the research subjects．A total of 32 VBAC parturients with uterine rupture and 90 VBAC parturients without uterine rupture were included according to the inclusion and exclusion criteria．The basic information of the subjects was queried through the medical record information system of the hospital．In the third trimester（≥37 weeks）,the thickness and elasticity of uterine scar were measured by ultrasound,and the predictive effect of uterine scar thickness and elastic SI value on uterine rupture was analyzed by ROC curve．Results Chi-square test showed that the incidence of uterine rupture was higher in patients with age>35 years,pregnancy>2 times,interval from last cesarean section<2 years,newborn weight≥3kg,and the proportion of uterine rupture in single suture was higher than that in double suture（P<0.05）．The mean uterine scar thickness of 122 subjects was（3.42±0.49）mm,and the mean SI was（2.57±0.45）．The area under curve（AUC）of uterine scar thickness alone for predicting uterine rupture was 0.805（95%CI：0.730-0.880,P<0.05）,the cut off value was 3.05 mm,the sensitivity was 0.726,the specificity was 0.910,and the Youden coefficient was 0.636 by ROC curve analysis．The AUC of uterine scar SI alone for predicting uterine rupture was 0.730（95%CI：0.635-0.824,P<0.05）,the cut off value was 2.11,the sensitivity was 0.767,the specificity was 0.781,and the Youden coefficient was 0.548 by ROC curve analysis．The AUC of uterine scar thickness combination for predicting uterine rupture was 0.874（95%CI：0.812-0.937,P<0.01）,the sensitivity was 0.875,the specificity was 0.811,and the Youden coefficient was 0.686 by ROC curve analysis．The AUC predicted by uterine scar thickness combined with uterine scar SI value was higher than that predicted by uterine scar thickness alone（Z=7.611,P=0.041）and uterine scar SI value（Z=25.864,P=0.025）．Conclusions Elastic SI value of ultrasound imaging of uterine scar combined with uterine thickness can effectively improve the prediction efficiency of ultrasound for VBAC maternal uterine rupture,which has certain application significance,but further demonstration is still needed．

目的 观察佩戴软弹性咬合板对磨牙症患者牙周组织应力的影响。方法 创建颌骨和牙列的三维有限元模型,对模型右侧上、下颌的每颗牙加载与牙体长轴呈0°、45°、90°的成人最大咬合力,分析使用不同厚度软弹性咬合板(1 mm、2 mm)后,牙槽骨及牙周膜所受应力的大小及分布,设不使用软弹性咬合板组做阴性对照。结果 在各咬合力加载角度下,与对照组相比,1 mm软弹性咬合板对牙周膜应力的缓冲效率平均为16%,对牙槽骨应力的缓冲效率平均为15%。2 mm软弹性咬合板对牙周膜及牙槽骨应力缓冲效率平均为26%及25%。在所有组别中,牙周组织的最大应力均集中于颊、舌侧牙槽嵴顶附近,但使用软弹性咬合板后应力集中范围减少,应力分布更均匀。结论 软弹性咬合板可以作为咬合应力的缓解装置,它有助于消减磨牙症产生的额外应力对牙周组织造成的破坏。

Objective To observe the effect of wearing an elastic soft occlusal splint on the stress of periodontal tissue in patient with bruxism. Methods A three-dimensional finite element model of jaw and dentition was created. Each tooth in the test area was loaded with the maximum adult occlusal force at 0°, 45°, and 90° with respect to the long axis of the tooth. 1 mm and 2 mm elastic soft occlusal splint were used, and the stress of the alveolar bone and periodontal ligament with and without elastic soft occlusal splint were analyzed and compared. Results Compared with the control group, 1 mm splint reduced the periodontal ligament stress of patient by an average of 16% and the alveolar bone stress by an average of 15%. After wearing a 2 mm splint, the patient's periodontal ligament and alveolar bone stress were reduced by 26% and 25% respectively. In all groups, the maximum stress of the periodontal tissue was on the buccal and lingual alveolar ridge crest, but the stress distribution was more uniform after using the soft occlusal splint. Conclusion The soft occlusal splint can be used to relieve occlusal stress and help eliminate the damage to periodontal tissue caused by the extra stress in bruxism.

目的 探讨实时超声弹性成像技术联合常规超声检查在评估脑卒中患者颈动脉粥样硬化斑块稳定性中的临床应用价值。方法 收集我院收治的临床确诊脑卒中患者(卒中组)34例作为研究对象,另抽取同期存在颈动脉斑块但未发生过脑卒中的人群(对照组)56例作为对照研究对象,进行超声弹性成像检测,并对检查结果进行统计分析。结果 34例脑卒中患者发现颈动脉粥样硬化斑块57个,其中低回声斑块29个,混合回声斑块21个,强回声斑块7个;56例对照组患者发现颈动脉粥样硬化斑块75个,其中低回声斑块22个,混合回声斑块25个,强回声斑块28个;两组间比较斑块数量之间、斑块大小之间差异有统计学意义(P<0.05)。颈动脉粥样硬化低回声、混合回声及强回声斑块弹性评分依次升高,其斑块硬度值依次升高;两组间斑块的评分数量分布差异有统计学意义(P<0.05);对于同一类型斑块的硬度值两组间差异无统计学意义(P>0.05);脑卒中组不同类型斑块间的硬度值差异有统计学意义(P<0.05)。结论 超声弹性成像技术可对脑卒中患者颈动脉粥样硬化斑块的稳定性进行半定量评估,不同类型斑块因所含组织成分的不同其弹性应变率表现也不同,能有效补充常规超声检查的信息的不足,进而评估斑块的稳定性。

Objective To explore the clinical value of real-time ultrasound elastography combined with conventional ultrasound in assessing the stability of carotid atherosclerotic plaques in stroke patients. Methods Thirty-four patients with clinically confirmed stroke (stroke group) in our hospital were collected as the research object. Another 56 patients with carotid plaque but without stroke (control group) in the same period were selected as the control object for ultrasonic elastography detection, and the results were analyzed statistically. Results Thirty-four stroke patients were found 57 carotid atherosclerotic plaques, including 29 hypoechoic plaques, 21 mixed echoic plaques and 7 hyperechoic plaques; 56 control patients were found 75 carotid atherosclerotic plaques, including 22 hypoechoic plaques, 25 mixed echoic plaques and 28 hyperechoic plaques. There were significant differences between the number of plaques and the size of plaques (P<0.05). Carotid atherosclerosis low echo, mixed echo and strong echo plaque elasticity score increased in turn, the plaque hardness value increased in turn; the number of plaque scores between the two groups had statistical significance (P<0.05); for the same type of plaque hardness value between the two groups had no significant difference (P>0.05); There were significant differences in hardness values between the same types of plaques (P<0.05). Conclusion Ultrasound elastography may semi-quantitatively evaluate the stability of carotid atherosclerotic plaques in stroke patients. Different types of plaques have different elastic strain rates because of different tissue components. It may effectively complement the information deficiency of conventional ultrasound examination, and then evaluate the stability of plaques.