2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

2007年北京大学第一医院研究生论文发表情况调查报告

Objective To investigate the quality of postgraduate education from the publication state.Method To analysis the publication states from different postgraduate students in 2007 in Peking University First Hospital. The papers from 69 students who acquired the qualification were analyzed.Ph.D.,M.D.and Master were selected.Results The number of publication were 3.17、1.93 and 1.58 in Ph D,M.D.and Master,respectively.The number of publication with science citation index were 1.50、0.18 and 0.08,respectively.The average impact factor(IF)were 4.72、0.57 and 0.15,respectively.The number of publication and IF were more in Ph. D.than that in other postgraduate students.Conclusions Postgraduate students with different academic degree received appropriated training.Ph.D.candidate acquired the ability of engage scientific research and writing thesis in high quality.     

Reducing the radiation dose with the adaptive statistical iterative reconstruction technique for chest CT in adults: a parameter study

Background Currently there is a trend towards reducing radiation dose while maintaining image quality during computer tomography （CT） examination.This results from the concerns about radiation exposure from CT and the potential increase in the incidence of radiation induced carcinogenesis.This study aimed to investigate the lowest radiation dose for maintaining good image quality in adult chest scanning using GE CT equipment.Methods Seventy-two adult patients were examined by Gemstone Spectral CT.They were randomly divided into six groups.We set up a different value of noise index （NI） when evaluating each group every other number from 13.0 to 23.0.The original images were acquired with a slice of 5 mm thickness.For each group,several image series were reconstructed using different levels of adaptive statistical iterative reconstruction （ASIR） （30％,50％,and 70％）.We got a total of 18 image sequences of different combinations of NI and ASIR percentage.On one hand,quantitative indicators,such as CT value and standard deviation （SD）,were assessed at the region of interest.The signal-to-noise ratio （SNR） and contrast-to-noise ratio （CNR） were calculated.The volume CT dose index （CTDI） and dose length product （DLP） were recorded.On the other hand,two radiologists with ＞5 years of experience blindly reviewed the subjective image quality using the standards we had previously set.Results The different combinations of noise index and ASIR were assessed.There was no significant difference in CT values among the 18 image sequences.The SD value was reduced with the noise index＇s reduction or ASIR＇s increase.There was a trend towards gradually lower SNR and CNR with an NI increase.The CTDI and DLP were diminishing as the NI increased.The scores from subjective image quality evaluation were reduced in all groups as the ASIR increased.Conclusions Increasing NI can reduce radiation dose.With the premise of maintaining the same image quality,using a suitable percentage of ASIR can increase the value of NI.To assure image quality,we concluded that when the NI was set at 17.0 and ASlR was 50％,the image quality could be optimal for not only satisfying the requirements of clinical diagnosis,but also achieving the purpose of low-dose scanning.     

Changes of G cells and D cells in the antral mucosa in rat experimental gastric ulcer

Objective: To investigate the association of changes in G and D cells in the antral mucosa with the production of gastrin and somatostatin during gastric ulcer and the healing process. Methods: Experimental gastric ulcer was induced with acetic acid in 42 Wistar rats and another 7 normal rats served as control. Changes in the production of gastrin and somatostatin in the plasma, gastric fluid and the antral tissues of the rats were measured by radio immunoassay, and the number and distribution of G and D cells were respectively determined by immunochemistry and Quantimet500 image analysis system. Results: In rats with gastric ulcer, the gastrin levels in the plasma, gastric fluid and the antral tissues increased while somatostatin levels were reduced, which were corrected in the healing process. Immunochemistry demonstrated the increase in the number of G cells in the antral tissues with decrease in D cell number, and the area covered by both cells shrank. The G cell to D cell number and area ratios were     

麻疹的双相移位研究进展

近年新生儿、婴儿、成人麻疹患者逐年增加,临床表现一般仍较典型,成年人麻疹患者全身中毒症状较重。麻疹抗体检测结果阳性是主要的诊断依据。麻疹发病的双相移位的机理可能是,免疫保护力不足,婴儿出生时麻疹抗体力低。孕期母传胎的麻疹抗体减弱,母经乳汁传给婴儿的抗体减弱,成人麻疹抗体水平逐年下降。预防措施是怀孕前给予育龄妇女麻疹疫苗接种,鼓励母乳喂养,麻疹疫苗计划免疫适当提前,在成人追加麻疹疫苗的免疫,加强病毒变异的研究等。     

妊娠晚期重度妊高征的监测

重度妊高征表现为高血压、蛋白尿、浮肿等症状 ,严重可以导致母婴死亡。对妊娠足月的重度妊高征 ,可以根据其临产与否及宫颈条件 ,立即决定其为阴道分娩或是剖宫产术。对于妊娠晚期的重度妊高征 ,因其胎龄不足月 ,胎儿生长发育及胎肺成熟度情况需通过一定时间的治疗 ,根据其病情变化来决定其治疗方案或终止妊娠的时机[1,2 ] 。这就需要我们对这一阶段的治疗进行监测 ,防止母儿并发症的发生。现将 2 0 0 0年至今我院收治妊娠晚期重度妊高征 30例的监测结果回顾分析如下。1　资料和方法1.1　研究对象　选择孕 31～ 36周重度妊高征 30例 ,其中 …     

80例局限性银屑病误诊原因分析

本文报告80例局限于小腿或手或足的银屑病。均经皮肤组织病理检查确诊。因部位比较特殊。受多种理化因素影响,使皮疹形态发生轻重程度不同的变化,常看不到典型损害,因而误诊为神经性皮炎,湿疹,慢性皮炎及癣等。作者对误诊原因进行了分析后,提出了鉴别诊断方法。     

腰椎间盘突出症再次手术的原因分析

目的解决腰椎间盘突出症手术中神经压迫。方法对1980～1998年再手术资料进行统计分析,讨论分析再手术原因,再次手术前影像学检查,观察病理变化以确定再手术方法。结果对11例随访6个月～1年,优7例(68．4％),良3例(36．8％),差1例(2．8％)。结论初次手术前详细查体和分析X线片,术中用导尿管和神经剥离探查,尽量避免髓核遗留,手术范围不宜太大,尽量减少对软组织和脊柱结构的破坏,避免形成硬膜囊与神经根粘连而致单纯形疤痕。     

降钙素原变化率的测定对细菌性肺炎的评估价值

目的 探讨降钙素原变化率的测定对细菌性肺炎的评估价值.方法 选取住院治疗的细菌性肺炎患者72例,根据治疗效果分为治疗有效组(有效组)47例和治疗无效组(无效组)25例,对治疗有效组和无效组中的降钙素酶原变化及影响肺炎治疗效果的危险因素进行分析.结果 有效组治疗后3天及治疗后7天的降钙素酶原显著低于无效组的患者(P＜0.05);年龄＞65岁、心功能≥3级、COPD、糖尿病、肺部双侧受累(X线示)、菌血症、感染性休克和3天内降钙素酶原变化率＜30％是影响细菌性肺炎治疗效果的危险因素;感染性休克、肺部双侧受累、3天内降钙素酶原变化率＜30％及心功能≥3级是影响细菌性肺炎治疗效果的独立危险因素.结论 测定降钙素原变化率对细菌性肺炎的疗效评估具有重要临床意义,可在临床推广应用.     

人工全髋关节置换术的手术配合

目的：介绍人工全髋关节置换术的手术配合做法;方法：主要在手术配合的六个方面,解决防感染、防栓塞等问题。结果：30例人工全髋关节置换术均获成功,结论：手术配合是护士责任心和基本功的全面体现,对提高手术效果有至关重要的影响。     

正常增殖期子宫内膜细胞增生状态的定量观察

以＾３氢－胸腺嘧啶核苷放射自显影法及ＨＥ染色，观察并分别测定了１８例正常子宫内膜增殖中期，１５例增殖晚期的腺上皮细胞或间质细胞的标记指数、分裂指数。结果显示：子宫内膜增殖晚期腺上皮细胞或间质细胞之ＬＩ均明显高于增殖中期。同时，增殖晚间质细胞之ＭＩ也明显高于增殖中期，即此两种细胞在增殖晚期中增生明显，其增生状态初步获得了定位定量测定的正常值。