目的 制备以牛血清白蛋白为模型药物的壳聚糖纳米制剂(BAS/CS NPs)及其体内外性质的研究,并通过加入羧化壳聚糖(WCS)来改善聚阳离子制备的纳米粒(CS NPs)的安全性。方法 利用油包水乳化-冻干法制备而得的CS NPs,通过激光粒度分析仪测定纳米粒粒径和电荷,用BCA法测定纳米粒包封率和载药量,并用Caco-2 cells单层膜模型评价BAS/CS NPs的细胞摄取情况和跨膜转运,以Franz扩散池法考察吸收考察BAS/CS NPs的离体各个小肠段黏膜的渗透性能,采用荧光分光光度计测定累积渗透量。结果 所制备的BAS/CS NPs平均粒径 在100～500 nm之间,电荷(-42.32±2.56)mV,包封率为88.37±6.82(%),载药量7.48±0.50(%),细胞毒性和细胞摄取实验表明羧化壳聚糖的BAS/CS NPs能降低细胞的毒性,并发现在十二指肠纳米粒具有促进BSA吸收作用(P<0.05)。结论 BAS/CS NPs是通过打开细胞紧密连接的方式增加BSA在小肠内的吸收。WCS降低BAS/CS NPs的细胞毒性,增强了兔小肠的BSA运输。作用要优于广泛研究的聚阳离子纳米粒体系,为口服蛋白类药物的传递提供了新的渠道。

目的 调查广州市市级(三级)妇幼医院与广州市农村地区区级(二级)妇幼医院护士离职意愿与工作满意度情况。方法 以广州市某三级甲等妇幼医院和4所(花都、南沙、从化、增城)地区二级妇幼医院的3 026名护士为研究对象。应用护士工作满意度量表(MMSS)及离职意愿量表(TIQ)进行问卷调查,并比较分析不同级别妇幼医院护士的离职意愿和工作满意度的差异。结果 相比二级妇幼医院,三级妇幼医院护士的平均年龄较大、学历、职称和奖金均较高、有编制人数所占比例较大,差异有统计学意义(P<0.05)。二、三级妇幼医院护士离职意愿平均得分依次为(2.38±0.682)分、(2.87±0.570)分,工作满意度平均得分依次为(3.34±0.702)分、(3.00±0.482)分。差异均有统计学意义(P<0.05)。结论 相比二级妇幼医院,三级妇幼医院护士离职意愿更强,工作满意度更低,护理管理者可采取有效措施提高护士工作满意度。

Objectives To investigate the current status of nurses' turnover intention and job satisfaction in secondary and tertiary women and children's hospitals in Guangzhou. Methods 3 026 nurses were enrolled in this study, which were from a tertiary hospital in Guangzhou urban area and another 4 secondary hospitals located in rural districts, namely Huadu, Nansha, Conghua, Zengcheng. Systematic sampling was adopted. The Mueller/McCloskey Nurse Job Satisfaction Scale (MMSS) and Turnover IntentionQuestionaire(TIQ)were applied to carry out this investigation. Differences of nurses' turnover intention and job satisfaction between different levels' hospitals were compared and analyzed. Results Compared with those in the secondary hospitals, nurses in the tertiary maternity hospital were at higher average age, had better academic backgrounds with higher professional titles, more bonus and more positions of establishment. The differences all were statistically significant (P<0.05). The average scores of turnover intention for nurses from the secondary and tertiary hospitals were2.38±0.682 and 2.87 ±0.570 respectively. All the differences were statistically significant (P<0.05). Conclusion Compared with those in the secondary maternal and child health hospitals, nurses in the tertiary hospitals were more willing to leave and had lower job satisfaction. Nurse's managers may take effective measurses to increase nurse's satisfaction.

目的 探讨广州地区老年人维生素D水平及其与骨密度、甲状旁腺激素的相关性。方法 收集2016年6月—12月在广州市第一人民医院老年病科就诊的患者。检测25-羟维生素D、甲状旁腺激素、Ⅰ型前胶原氨基端前肽、β-Ⅰ型胶原C端肽、腰椎和髋部骨密度。将患者分为维生素D缺乏组(≤20 ng/mL)、维生素D不足组(20～30 ng/mL)、维生素D充足组(≥30 ng/mL)。结果 ①426例研究对象的平均年龄是(79.77±7.69)岁,25羟维生素D平均值是(20.38±8.20)ng/mL。维生素D缺乏、不足、充足者比例分别是53%(226/426)、34.3%(146/426)、12.7%(54/426)。②25羟维生素D水平随年龄增加而降低。25羟维生素D与股骨颈和全髋骨密度呈正相关(r=0.18,P＜0.001),与甲状旁腺激素呈负相关(r=-2.05,P＜0.001)。结论 广州地区老年人维生素D不足及缺乏十分普遍。维生素D与股骨颈、髋部骨密度呈正相关,与甲状旁腺激素呈负相关。

Objective To investigate the vitamin D level of elder people in Guangzhou and the relationship in vitamin D, bone mineral density and parathyroid hormone. Methods To screening elderly patients in the geriatric department of Guangzhou First peoples Hospital from June to December 2016.Serum 25-hydroxy vitamin D,parathyroid hormone,procollagen typeⅠN-terminal propeptide,β-crosslaps of C-telopeptide of typeⅠcollagen,bone mineral density were measured.Three groups were divided according to the serum 25(OH)D level,including deficiency group(≤20 ng/mL),insufficiency group(20-30 ng/mL) and sufficiency group(≥30 ng/mL). Results The mean age of the 426 subjects was 79.77±7.69 years old. The average level of 25(OH)D was 20.38±8.20 ng/mL. The proportion of vitamin D deficiency, insufficient and sufficient persons were 53% (226/426), 34.3% (146/426), and 12.7% (54/426). The level of 25 hydroxy vitamin D was decreased with age.Correlation analysis showed that 25 hydroxy vitamin D level was positive correlated with the femoral neck and total hip bone density(r=0.18,P＜0.001),was negatively correlated with parathyroid hormone(r=-2.05,P＜0.001). Conclusion Vitamin D deficiency or insufficiency is highly prevalent in elderly men in Guangzhou.25 hydroxy vitamin D level was positive correlated with the femoral neck and total hip bone density, negatively correlated with parathyroid hormone.

目的 本研究旨在探讨血浆chemerin水平与原发性高血压合并心房颤动的相关性。方法 选择2016年2月—2017年12月期间在广州市第一人民医院心内科及老年心内科住院的高血压患者160例,根据是否合并心房纤颤分为心房纤颤组(AF组,n=72)及非心房纤颤组(NAF组,n=88),另选取140例我院体检中心体检结果正常的正常健康人作为对照组(CON组,n=140)。采用全自动生化检测仪测定甘油三脂、总胆固醇、低密度脂蛋白、C反应蛋白等生化学指标;使用ELISA法检测血浆chemerin水平。结果 AF组患者的血浆chemerin水平较NAF组患者升高[(180.45±15.23)ng/mL vs(162.36±13.44)ng/mL,P<0.05],且均较CON组升高[(142.36±11.83)ng/mL,P<0.05)],多元Logistic回归分析显示血浆chemerin水平与高血压病合并心房纤颤呈独立相关性(OR 1.112, 95% CI 1.023～1.302;P<0.001)。结论 高血浆chemerin水平可能是预测高血压合并心房纤颤的独立危险因素,血清chemerin可能成为一种预测高血压发生心房纤颤的重要生物学标记物。

Objective To explore the relationship between chemerin levels and permanent atrial fibrillation in patients with hypertension. Methods A total of 160 patients with hypertension were enrolled in this study. All the patients were classified as AF(n=72) or NAF(n=88) based on the permanent atrial fibrillation or not. And 140 healthy people were collected as a control group(CON). Triglycerides, total cholesterol, low density lipoprotein cholesterol and C-reactive protein were measured by automatic biochemical detector. Serum chemerin levels were determined by enzyme-linked immunosorbent assay(ELISA). Results Serum chemerin levels were higher in AF patients than those in NAF patients(180.45±15.23 ng/mL vs 162.36±13.44 ng/mL,P<0.05). They were both higher than that of the CON patients(142.36±11.83 ng/mL,P<0.05). Multivariate logistic regression demonstrated that chemerin level was independently associated with the permanent atrial fibrillation in patients with hypertension(OR 1.112, 95% CI 1.023～1.302;P<0.001). Conclusion Serum chemerin is an independent risk factor for permanent atrial fibrillation with hypertension. The results suggest that chemerin might be a useful biomarker for predicting the permanent atrial fibrillation with hypertension.

目的 探讨粪菌移植(FMT)在两种肠镜下盲肠置管术的临床应用。方法 将2016年1月—2017年6月在我院通过肠镜下盲肠置管术进行粪菌移植的200例患者,随机分为A组和B组,各100例。A组采用直接肠镜置管法完成置管,B组采用二次肠镜置管法完成置管,对两组操作的置管成功率、置管时间、平均疼痛评分、并发症等情况进行对比。结果 与A组相比较,B组到达盲肠时间略长但无统计学意义(14.95min vs 15.26min,P=0.68)、疼痛评分低(5.7 vs 4.8,P<0.05)、更低的并发症发生率(6 % vs 23 %,P<0.05)。结论 在粪菌移植内镜下盲肠置管术患者中,采用通过采用二次肠镜置管法与直接肠镜法相比较完成置管手术时间无统计学差异,但置管成功率高、患者的痛苦小、风险低,值得临床推广。

Objective To investigate the clinical application of fecal microbiota transplantation (FMT) in two kinds of colonoscopic cecal catheterization. Methods From January 2016 to June 2017, 200 patients who took colonoscopic cecal catheterization for fecal microbiota transplantation in our hospital were randomly divided into group A and group B, with 100 patients in each group.Group A used direct colonoscopy catheterization to complete catheterization, group B was treated by the second colonoscopy catheterization. The success rate of catheterization, catheterization time, average pain score and complication were compared between the two groups. Results Compared with group A, the time to reach the cecum in group B was slightly longer but not statistically significant (14.95min vs 15.26min,P=0.68). It had lower pain score (5.7 vs 4.8, P<0.05), lower complication rate. Conclusion Among the patients with colonoscopic cecal catheterization for fecal microbiota transplantation, there was no significant difference in the time of catheterization between the second colonoscopy and the direct colonoscopy, but it has the high success rate of catheterization and low pain, low risk, worthy of clinical promotion.

目的 对临床护士实施预防住院患者误吸教育干预,评价干预措施对护士预防误吸知识及护理行为的影响。方法 选取我院神经系统相关科室的110名护士为研究对象,通过一系列教育干预,对比干预前后护士在预防误吸知识及护理行为等方面的改变,评估干预措施的效果。结果 110名护士均对培训满意;培训前护士预防误吸知识的平均得分为(65.6±9.6)分,培训后平均得分为(92.5±6.5)分,培训前后得分的差异有统计学意义(P<0.05)。培训后89份(89%)跟踪调查卷明确表示护士在工作中运用了培训所学的知识。结论 对护士进行有组织、有计划的教育干预能提高护士预防与处理患者误吸的知识水平,并能对护士预防和处理患者误吸的行为产生积极影响。

Objective To evaluate the effect of educating nurses on how to prevent and reduce aspiration rate of patients. Methods 110 nurses were recruited from neurological department in our hospital and were trained systematically about the prevention and nursing of aspiration. We compared the scores they had before and after training. Results 110 nurses were all satisfied with the training. The pre-education test score about the aspiration knowledge was 65.6±9.6 while the post-education test score was 92.5±6.5. The difference of the score before and after training was statistically significant difference (P<0.05). The follow-up study indicated that 89% nurses are applying the knowledge gained from the training to their clinical work. Conclusion It's suggested that well-organized educational training may improve nurses' performance of preventing patients from aspiration and treating patients when they had aspiration, which left a positive effect on nurses' behavior.

目的 探讨肺结核合并肺癌患者的CT影像特征,为临床疾病诊断提供参考依据。方法 选取2015年—2018年我院收治的肺结核合并肺癌患者50例作为观察组,另选取同期于我院治疗的单纯肺结核患者50例为对照组。观察两组患者临床症状及CT影像表现并作出对比分析。结果 两组患者临床症状及体征相比,差异无统计学意义(P>0.05);观察组患者分叶征、毛刺状结节比例高于对照组患者,差异有统计学意义(P<0.01),观察组患者实质内空洞比例低于对照组患者,差异有统计学意义(P＜0.01),两组患者肿物及条索影发生比例相比差异无统计学意义(P>0.05)。结论 肺结核合并肺癌患者的CT影像学特征主要在分叶征、毛刺状结节和空洞症,临床应根据这些特征并结合其他检查进行定性诊断。

Objective To investigate the CT images of patients with pulmonary tuberculosis complicated with lung cancer and provide reference for the diagnose. Methods 50 cases of pulmonary tuberculosis and lung cancer treated in our hospital in 2015~2018 in January were selected as observation group, and 50 cases of simple pulmonary tuberculosis treated in our hospital for the same period were selected as control group. The clinical symptoms and CT imaging findings of the two groups were observed and compared. Results There was no significant difference in clinical symptoms and signs between the two groups (P>0.05), and the proportion of lobular sign and burr nodular nodules in the observation group was higher than that of the control group (P<0.01), and the proportion of parenchymal cavities in the observation group was lower than that of the control group (P<0.01). There was no significant difference between the two groups in the incidence of tumor and streak shadow (P>0.05). Conclusion The CT imaging features of patients with pulmonary tuberculosis and lung cancer are mainly lobular sign, burr like nodules and cavities, which should be qualitatively diagnosed according to these features combined with other tests.

目的 了解先兆早产孕妇的抑郁和唾液皮质醇浓度,探讨两者间的相关性。方法 共纳入138例先兆早产孕妇作为研究对象。采用爱丁堡产后抑郁量表(Edinburgh Postpartum Depression Scale,EPDS)测量其抑郁状况,同时收集8am、16pm、23pm的唾液进行皮质醇浓度检测。以EPDS≥9.5分为界值,将研究对象分为抑郁组和非抑郁组。采用独立样本t检验比较两组唾液皮质醇浓度,采用Pearson相关分析抑郁和唾液皮质醇浓度的相关性。结果 先兆早产孕妇的抑郁平均得分为(8.8±4.97)分。抑郁(EPDS≥9.5分)检出率为46.4%。8am、16pm、23pm的唾液皮质醇浓度分别为(14.07±7.36)ng/mL、(9.27±5.03)ng/mL、(5.71±3.92)ng/mL。总研究对象的EPDS与8amSC(r=0.257,P=0.002)、16pmSC(r=0.303,P＜0.001)存在相关;非抑郁组孕妇的EPDS与8amSC(r=0.306,P=0.008)、16pmSC(r=0.203,P=0.048)存在相关。结论 先兆早产孕妇抑郁者比例较高。抑郁与唾液皮质醇存在中低度相关性。产科医护人员应关注先兆早产孕妇的心理健康状况,即使是抑郁相对较轻者,也要帮助其改善抑郁状况以获得良好的妊娠结局。

Objectives To discover the depression status and salivary cortisol(SC)level among women with threatened preterm labor, and find their associations. Methods 138 pregnant women with threatened preterm labor were recruited in this study. Edinburgh Postpartum Depression Scale (EPDS) was applied to assess women's depression, and their saliva were collected at 8am, 16pm,23pm to test the cortisol level. EPDS≥9.5 was set as the cut-off value to assign the participants to depressive group(EPDS≥9.5) and non-depressive group (EPDS＜9.5). Independent samples t-test was used to compare the difference of salivary cortisol of the two groups, and Pearson correlation analysis was also applied to calculated the associations between depression and salivary cortisol. Results The average scores of EPDS in total women were (8.8±4.97). The incidence of depression (EPDS≥9.5) was as high as 46.4%.The average level of salivary cortisol at 8am,16pm and 23pm were(14.07±7.36) ng/mL, (9.27±5.03)ng/mL and (5.71±3.92)ng/mL respectively. EPDS in total women was associated with 8amSC(r=0.257, P=0.002) and 16pmSC(r=0.303, P＜0.001). EPDS in non-depressive group were also associated with 8amSC (r=0.306,P=0.008) and 16pmSC(r=0.203, P=0.048). Conclusion Women with threatened preterm labor have a high incidence of depression. There was a low-moderate level of association between maternal depression and salivary cortisol. Obstetrical doctors and nurses should focus on maternal psychological health level in women with threatened preterm labor. Even those individuals comparatively with a less severe depression, we need help them to minimize the severity of depression to achieve satisfying pregnant outcomes.

目的 探讨急性心肌梗死患者入院首次中心粒细胞/淋巴细胞比值(neutrophil/lymphocyte ratio,NLR)与院内主要不良心血管事件(MACE)发生的相关性。方法 回顾分析2016年1月—2016年12月入住我院的急性心肌梗死患者179例,分为发生院内不良事件组(n=46)和未发生组(n=133)。采用单因素及多因素Logistics回归分析评估NLR与MACE风险的相关性。结果 179例患者中,46例患者发生院内MACE。发生院内MACE组患者的淋巴细胞计数低于未发生组(P<0.05),NLR高于未发生组(P<0.05),发生院内MACE组患者入院时的心、肾功能较未发生组差(P<0.05)。单因素回归分析显示,NLR水平与院内MACE发病率相关(OR=1.079,95%CI:1.014～1.147, P＜0.05)。多因素logistic回归分析校正性别、年龄、高血压病史、糖尿病史、Killip II级以上、收缩压、入院首次白细胞、eGFR、超敏C反应蛋白、左室射血分数及多支病变后显示,NLR是院内MACE的独立危险因素(OR=1.182,95%CI:1.034～1.352,P＜0.05);此外,超敏C反应蛋白及LVEF<50也是院内MACE的独立危险因素(P＜0.05)。结论 入院首次高NLR与急性心肌梗死患者发生院内MACE相关,是患者发生院内MACE的独立危险因素。

Objective To explore the correlation between first neutrophil/lymphocyte ratio(NLR) and in-hospital major adverse cardiac events (MACE) in patients with in patients with acute myocardial infarction. Methods Total of 179 patients with acute myocardial infarction in Guangzhou First People's Hospital from Jan 2016 to Dec 2016 were enrolled. MACE was defined as malignant arrhythmia, recurrence of myocardial infarction, target vascular reconstruction, acute left heart failure, stroke, cardiac shock and death.Baseline data and in-hospital clinical adverse events were compared among two groups. All patients were divided into two groups:MACE(+) group and MACE(-) group. Univariate and multivariate logistic regression was used to assess the correlation between NLR and in-hospital MACE. Results In-hospital MACE occurred in 46(25.7%)patients. Univariate logistic analysis showed that NLR was strongly related with MACE incidence(OR=1.079,95%CI:1.014～1.147, P＜0.05). Multivariate logistic regression analysis found that after adjusting other traditional risk factors including female gender, age, hypertension,diabetes, overKillip II grade, systolic blood pressure,first white blood cells after admitted,basic renal dysfunction,Hs-CRP,LVEF and multivessel lesions. NLR was still a significant independent predictor of in-hospital MACE in patients with acute myocardial infarction. Additionally, hs-CRP and LVEF<50% were also associated with in-hospital MACE(P＜0.05). Conclusion NLR is the independent risk factor for in-hospital MACE occurrence in acute myocardial infarction at the early admission.

目的 研究新辅助化疗联合保肢手术治疗骨肉瘤的临床效果。方法 根据既往治疗骨肉瘤方法的不同,将56例患者分为对传统保肢组（A组）和现代保肢组（B组）,各28例。A组用采用传统保肢方案,即保肢手术+术后化疗方案进行;B组采用现代保肢方案,即新辅助化疗+保肢手术+术后化疗方案进行。化疗方案均采用CTX + VCR +MTX+ ADM方案,比较两组转移/复发率、术后1 年、2年及 3 年生存率、肢体功能、临床疗效情况。结果 比较两组的转移/复发率及3年后的死亡率,B组低于A组(P<0.05);肢体功能优良率及临床疗效,B组高于A组(P<0.05)。结论 新辅助化疗联合保肢手术能够降低骨肉瘤患者转移/复发率、死亡率,改善肢体功能,提高临床疗效。

Objective To study the clinical effect of neoadjuvant chemotherapy combined with limb salvage surgery for osteosarcoma. Methods Based on the previous methods of treating osteosarcoma, 56 patients were divided into the traditional limb salvage group (A group) and the modern limb salvage group (B group), 28 cases for each. The traditional limb salvage surgery + postoperative chemotherapy regimen were used in group A, and modern limb salvage regimen was performed in group B, ie neoadjuvant chemotherapy + limb salvage surgery + postoperative chemotherapy. The CTX + VCR +MTX+ ADM protocol was used in the chemotherapy regimens. The metastasis/recurrence rate, the 1-year, 2-year and 3-year survival rates, limb function, and clinical efficacy were compared between the two groups. Results The metastasis/recurrence rate and the mortality rate after 3 years in the two groups were compared. The B group was lower than that of the group A (P<0.05). The excellent rate of limb function and clinical efficacy were higher in the B group than that of in the group A (P<0.05). Conclusion Neoadjuvant chemotherapy combined with limb salvage surgery may reduce the metastasis/recurrence rate and mortality of osteosarcoma patients, improve limb function and increase clinical efficacy.