VEP联合F-ERG在眼挫伤中的临床应用

目的探讨视觉诱发电位(VEP)联合闪光视网膜电图(F-ERG)在眼挫伤的早期诊断和预后估计中的应用价值。方法对79例(79眼)钝挫伤眼及20例正常对照眼,按照国际标准分别行VEP和F-ERG检查,比较分析两组间VEP P100波潜时值和波幅值及F-ERG的a、b波幅值的平均值。结果眼挫伤组VEP P100波潜时值明显延迟,波幅值明显降低,F-GRGa、b波幅值明显降低,其异常率随视功能操作程度的加强而增加。结论VEP联合F-ERG是判断眼挫伤的视功能及早期确诊的客观检查方法。     

眼电生理检查在眼挫伤法医学鉴定中的价值

目的探讨眼电生理检查,在眼挫伤法医学鉴定中的价值。方法应用眼电生理检测系统,诊断为眼挫伤62例(68眼),分别行P-VEP或F-VEP,F-ERG,OPS检查。记录P100峰潜时和波幅,ERG,a,b波峰潜时和波幅,OPS波幅。结果凡伤后视力下降眼,P100波幅,峰潜时与对照眼比较,峰潜时明显延迟,波幅明显降低(P<0.01)。结论视觉电生理对眼挫伤后视网膜振荡、视神经损伤的诊断,具有客观性和敏感性。在估计预后、指导治疗以及法医学鉴定中,具有一定的应用价值。     

视觉电生理在眼挫伤医学鉴定中的应用

目的 分析视觉诱发电位(VEP)、视网膜电图(ERG)、振荡电位(OPS)在眼挫伤鉴定中的应用意义.方法 应用眼电生理检查仪对98例无屈光间质病变的眼挫伤患者除行常规眼科检查外,分别行闪光-ERG(F-ERG)、图形-VEP(P-VEP)、闪光-VEP(F-VEP)、OPS检查.结果 记录VEP的P100峰潜时和振幅,EBG的a、b波峰时和振幅,以及OPS峰时和振幅.其中22例(22.45%)VEP100波峰值及峰潜时无明显异常,F-ERG a、b波峰值无明显降低,OPS振幅值无明显下降,与对照组比较差异均无统计学意义(P均>0.05),后经证实为伪盲.76例(77.55%)F-VEP或P-VEP P100波峰潜时延长,波峰值明显降低,F-EBG a、b波明显下降,OPS振幅值下降,与对照组比较差异均有统计学意义(P均<0.01).其中43例(56.58%)经治疗后视力均有所提高,其余33例(43.42%)合并不同程度的视网膜病变或视神经萎缩.结论 眼电生理检查为医学鉴定提供了具有参考价值的客观依据.但在视力鉴定及伪盲鉴定中应谨慎.     

应用视觉诱发电位检测早期视神经挫伤

目的探讨视觉诱发电位(VEP)在外伤性视神经挫伤中的诊断价值.方法对169例临床诊断为外伤性视神经挫伤的患者行VEP检测,并与自体健侧眼和正常对照组对比.结果169例患者(单眼155例,双眼14例)共183只眼,VEP检查结果均有不同程度异常.其中5例7眼VEP波幅明显降低(4%),125例133眼单纯波幅降低(73%),潜伏期延长者49例54眼(28%).受伤眼均与自体健侧眼和正常对照组比较,P100波幅差异有显著意义(P＜0.01),49例P100峰潜伏期略延长,与正常值对比无明显差异(P＞0.05).结论VEP对外伤后视神经挫伤的检出敏感性较高,因此对外伤性视神经挫伤的早期诊断、预后评估有重要价值.     

眼前节针样穿通伤眼视觉电生理改变

目的：评价因针类物所造成的角膜穿孔伤的视觉电生理检查结果。方法：对15视觉电生理检查结果进行分析。包括受伤眼与对侧眼的ERG、F－VEP及OPs波。结果：多数伤眼ERGa、b波振幅降低64．3％－71．4％（P＜0．01），峰潜时延长42．7％－78．6％（P＜0．01）；F－VER振幅降低64．3％（P＜0．01），峰潜时延长57．4％（P＜0．01）；4眼OPs波消失。结论：眼前段的针刺伤可引起视觉电生理检查结果的明显异常，故应考虑其累及眼后段的问题。     

糖尿病视网膜病变中医证型与视觉电生理的关系

目的：探讨糖尿病视网膜病变中医证型与视觉电生理的关系。方法：将39例78眼确诊为糖尿病视网膜病变患者按照中医辨证分型，进行图形视觉诱发电位和闪光视网膜电图检测。结果：图形视觉诱发电位无糖尿病视网膜病变组、糖尿病视网膜病变中医各证型组的P100潜时延长，与正常人组的比较有显著性差异（P＜0.05）。OPs波的改变基本随单纯期→增殖期的发展而减弱，增殖期趋向于熄灭，其中以血瘀气滞证偏多。结论：DR中医证型对P－VEP的潜时、波幅有不同程度的影响；糖尿病视网膜病变对F－ERG的b波波幅有一定影响，面中医证型各组间的b波无明显差异，血瘀气滞证对OPS波波幅影响较明显。     

光谱视网膜电图对单纯型糖尿病性视网膜病变的分析

目的观察单纯型糖尿病性视网膜病变(DR)的光谱视网膜电图(ERG)改变特点。方法采用自然瞳孔和相同刺激光强度,在暗适应和明适应两种条件下,DR 组和对照组分别依次给予蓝光、绿光和红光刺激。皮肤电极记录,t 检验分析。结果 DR 组红光 ERG 暗适应 a 波振幅P=0.05,b 波振幅暗适应和明适应 P<0.01;绿光 ERG 暗适应 a 波振幅 P<0.01,b 波振幅暗适应和明适应 P<0.01,明适应 b 波峰潜时 P<0.01,暗适应 b 波峰潜时 P<0.05;蓝光 ERG 暗适应 a 波振幅 P<0.05,b 波振幅 P<0.05,结论光谱 ERG 可以作为不同时期 DR 的不同波长锥细胞损害情况的评价指标。     

糖尿病视网膜病变的视觉电生理观察

目的:我们观察了60例(共120只眼)糖尿病人的ERG和VEP的改变。方法:采用AVES-2000视觉电生理仪(重庆康华公司)记录ERG和VEP。ERG的a波和b波测量按标准方法。VEP记录、测量按标准方法。视力采用国际标准视力表。统计学处理:表中数据用均数±标准差(X±s)表示,与对照组比较采用t检验,个组治疗前后的自身比较用配对t检验。结果:显示糖尿病人的ERG中a.b波的潜伏期延长、波幅降低,VEP的潜伏期延长、波幅降低。结论:ERG和VEP可作为观察糖尿病视网膜病变的一个重要指标。     

应用视觉诱发电位检测早期视神经挫伤

目的：探讨视觉诱发电位（VEP）在外伤性视神经挫伤中的诊断价值。方法：对169例临床诊断为外伤性视神经挫伤的患者行VEP检测，并与自体健侧眼和正常对照组对比。结果：169例患者（单眼155例，双眼14例）共183只眼，VEP检查结果均有不同程度异常。其中5例7眼VEP波幅明显降低（4％），125例133眼单纯波幅降低（73%），潜伏期延长者49例54眼（28％）。受伤眼均与自体健侧眼和正常对照组比较，P100波幅差异有显著意义（P〈0．01），49例P100峰潜伏期略延长，与正常值对比无明显差异（P〉0．05）。结论：VEP对外伤后视神经挫伤的检出敏感性较高，因此对外伤性视神经挫伤的早期诊断、预后评估有重要价值。     

视觉诱发电位在视神经挫伤诊断及预后中的应用

目的探讨视觉诱发电位（VEP）的异常率对视神经挫伤诊断及预后估计。方法对69例（69眼）单倒眼挫伤组进行视力检查及VEP检查,以自体健侧眼为对照组。分析两组间VEPP100波幅值及P100峰潜时值,记录单侧眼挫伤患者的伤眼、对侧眼及治疗后伤眼的VEP。结果挫伤眼VEPP100波幅明显降低,P100峰潜时明显延长,挫伤眼各视力组VEP异常率明显高于对照组,挫伤眼矫正视力〈0．1者VEP异常更明显且预后差。结论VEP是一种客观、定量、定位评定视神经功能的方法,是目前视神经病变最敏感、早期诊断、判断预后的客观检查方法,对视觉功能评价有重要的临床价值。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.