目的:编制适用于农村地区孕产妇的母婴健康素养(maternal and infant health literacy,MIHL)问卷,并在广西灵山县进行应用,为广西壮族自治区农村乃至更广泛的我国农村地区开展有指向性的妇幼健康保健工作提供测评工具和科学依据。方法:...目的:编制适用于农村地区孕产妇的母婴健康素养(maternal and infant health literacy,MIHL)问卷,并在广西灵山县进行应用,为广西壮族自治区农村乃至更广泛的我国农村地区开展有指向性的妇幼健康保健工作提供测评工具和科学依据。方法:通过文献检索和专家讨论,建立MIHL框架体系,并初步确定条目清单,采用德尔菲法确定问卷核心条目。于2022年10月—2023年9月将该问卷应用于灵山县妇幼保健院就诊的1743名孕产妇,同时收集孕产妇的基本信息;采用Cron⁃bach’s α系数和验证性因子分析进行问卷的信效度检验,采用χ^(2)检验对不同组别间MIHL水平进行单因素分析,采用多元logistic回归分析MIHL的影响因素。结果:问卷共包含24个条目,总问卷Cronbach’s α系数为0.719;验证性因子分析结果提示模型拟合良好。应用结果显示,灵山县孕产妇MIHL得分为46分,MIHL具备率为27.25%。多因素分析显示,孕产阶段、产次、文化程度、与配偶关系、与父母关系是MIHL的影响因素。结论:该研究编制的MIHL问卷在农村孕产妇中具备良好的信度和效度,使用该问卷测评得到的灵山县孕产妇MIHL水平较低,需加强健康教育的精准度和实效性,应重点关注孕期阶段、初产、文化程度低、与父母及配偶关系一般的群体。展开更多
目的探讨红细胞体积分布宽度(red cell volume distribution width,RDW)对心脏停搏(cardiac arrest,CA)患者预后的评估价值。方法回顾性分析2018年1月至2022年10月湖州市中心医院重症监护室(intensive care unit,ICU)收治的146例CA患者...目的探讨红细胞体积分布宽度(red cell volume distribution width,RDW)对心脏停搏(cardiac arrest,CA)患者预后的评估价值。方法回顾性分析2018年1月至2022年10月湖州市中心医院重症监护室(intensive care unit,ICU)收治的146例CA患者的临床资料,根据ICU住院期间预后将患者分为存活组和死亡组,比较两组患者的临床资料,采用多因素Logistic回归分析影响CA患者预后的危险因素。采用受试者操作特征曲线(receiver operating characteristic curve,ROC曲线)评估RDW对CA患者预后的预测效能。Kaplan-Meier法绘制患者生存曲线。结果共纳入146例CA患者,其中存活49例,死亡97例,死亡率66.44%。死亡组患者的急性生理学和慢性健康状况评价Ⅱ评分、RDW、血钠、丙氨酸转氨酶均显著高于存活组,心肺复苏时间显著长于存活组,ICU住院时间显著短于存活组(P<0.05)。多因素Logistic回归分析结果显示,RDW、心肺复苏时间均是CA患者ICU住院期间死亡的独立危险因素(P<0.05)。ROC曲线结果显示RDW预测CA患者死亡的曲线下面积为0.742,最佳截断值为13.95%,敏感度59.8%,特异性85.7%。低RDW患者的1年累积生存率显著高于高RDW患者(χ^(2)=18.757,P<0.001)。结论RDW是预测CA患者ICU住院期间死亡的独立危险因素。展开更多
The dynamic viscoelastic behavior of polysiloxanes filled with ultrafine SiO 2 has become ever-lasting important due to its unique properties. In present article, the influence of SiO 2 treated with silane coupling ag...The dynamic viscoelastic behavior of polysiloxanes filled with ultrafine SiO 2 has become ever-lasting important due to its unique properties. In present article, the influence of SiO 2 treated with silane coupling agent bis(3-triethoxysilyl)tetrasulfane(TESPT) on dynamic viscoelastic properties of uncured polymethylvinylsiloxane(PMVS)/ultra fine-silica(SiO 2) composites was investigated by using an advanced rheometric expansion system(ARES) under the conditions of temperature 25 ℃, strain(γ) from 0.01% to 100% and frequency(ω) from 0.01 to 100 rad/s. The results reveal that the treated SiO 2 particles leads to the frequency-dependent storage modulus(G′) which approaches linear viscoelastic behavior in the lower frequency region. Based on an examination of the dynamic viscoelastic behavior and TEM observation, we owe these characteristics to improved dispersion of SiO 2 particles in the polymer matrix due to their surface-treatment as compared with the untreated case. On the other hand, dynamic viscoelastic behavior sensitively reflects the dispersion of SiO 2 particles with diameters from 100 to 500 nm, which further evidence the promotion of filler dispersion induced by the incorporation of TESPT.展开更多
文摘目的:编制适用于农村地区孕产妇的母婴健康素养(maternal and infant health literacy,MIHL)问卷,并在广西灵山县进行应用,为广西壮族自治区农村乃至更广泛的我国农村地区开展有指向性的妇幼健康保健工作提供测评工具和科学依据。方法:通过文献检索和专家讨论,建立MIHL框架体系,并初步确定条目清单,采用德尔菲法确定问卷核心条目。于2022年10月—2023年9月将该问卷应用于灵山县妇幼保健院就诊的1743名孕产妇,同时收集孕产妇的基本信息;采用Cron⁃bach’s α系数和验证性因子分析进行问卷的信效度检验,采用χ^(2)检验对不同组别间MIHL水平进行单因素分析,采用多元logistic回归分析MIHL的影响因素。结果:问卷共包含24个条目,总问卷Cronbach’s α系数为0.719;验证性因子分析结果提示模型拟合良好。应用结果显示,灵山县孕产妇MIHL得分为46分,MIHL具备率为27.25%。多因素分析显示,孕产阶段、产次、文化程度、与配偶关系、与父母关系是MIHL的影响因素。结论:该研究编制的MIHL问卷在农村孕产妇中具备良好的信度和效度,使用该问卷测评得到的灵山县孕产妇MIHL水平较低,需加强健康教育的精准度和实效性,应重点关注孕期阶段、初产、文化程度低、与父母及配偶关系一般的群体。
文摘The dynamic viscoelastic behavior of polysiloxanes filled with ultrafine SiO 2 has become ever-lasting important due to its unique properties. In present article, the influence of SiO 2 treated with silane coupling agent bis(3-triethoxysilyl)tetrasulfane(TESPT) on dynamic viscoelastic properties of uncured polymethylvinylsiloxane(PMVS)/ultra fine-silica(SiO 2) composites was investigated by using an advanced rheometric expansion system(ARES) under the conditions of temperature 25 ℃, strain(γ) from 0.01% to 100% and frequency(ω) from 0.01 to 100 rad/s. The results reveal that the treated SiO 2 particles leads to the frequency-dependent storage modulus(G′) which approaches linear viscoelastic behavior in the lower frequency region. Based on an examination of the dynamic viscoelastic behavior and TEM observation, we owe these characteristics to improved dispersion of SiO 2 particles in the polymer matrix due to their surface-treatment as compared with the untreated case. On the other hand, dynamic viscoelastic behavior sensitively reflects the dispersion of SiO 2 particles with diameters from 100 to 500 nm, which further evidence the promotion of filler dispersion induced by the incorporation of TESPT.
