高血压病左室肥厚与QT离散度分析

目的：探讨高血压病左室肥厚（ＬＶＨ）与ＱＴ离散度（ＱＴｄ）的关系。方法：测量６４例高血压病非ＬＶＨ患者（组Ⅰ）、５８例高血压病ＬＶＨ患者（组Ⅱ）和７６例健康人（组Ⅲ）的ＱＴｄ与较正的ＱＴｄ（ＱＴｃｄ）,并对各组进行比较分析。结果：组ⅡＱＴｄ、ＱＴｃｄ较组Ⅰ、组Ⅱ显著延长（Ｐ均〈０．０１）。结论：高血压病ＬＶＨ的发生及其易出现各种并发症的原因可能与其ＱＴｄ、ＱＴｃｄ的延长有关。     

高血压病患者左室肥厚与QT离散度的关系

目的：探讨高血压病患者左室肥厚与ＱＴ离散度的关系。方法：７０例高血压病患者,分为左室肥厚组（ｎ＝ ３１）及无左室肥厚组（ｎ＝ ３９）,用超声心动图测量左室重量（ＬＶＭ）及左室重量指数（ＬＶＭＩ）。从１２ 导联心电图同步测量ＱＴ离散度（ＱＴｄ）、ＱＴｃｄ 并分析两者间相互关系。结果：高血压伴左室肥厚者ＱＴｄ 及ＱＴｃｄ 较无左室肥厚者明显增大（Ｐ均＜ ０．０１）;高血压Ⅰ期、Ⅱ期、Ⅲ期之间比较,显示：Ⅱ、Ⅲ期与Ⅰ期相比,Ｐ 均＜ ０．０１;Ⅱ期与Ⅰ期相比,Ｐ＞ ０．０５。左室肥厚伴室性心律失常者ＱＴｄ 及ＱＴｃｄ 与无心律失常者两组相比,Ｐ均＜ ０．０１。结论：高血压病患者伴左室肥厚组ＱＴｄ 及ＱＴｃｄ 比无左室肥厚组明显增大。左室肥厚组伴室性心律失常比无室性心律失常组明显增大。高血压Ⅲ期与Ⅰ、Ⅱ期患者ＱＴｄ 及ＱＴｃｄ 相比,差别有显著性,Ｐ均＜ ０．０１;ＱＴｄ 与ＬＶＭＩ两者呈正相关（ｒ＝ ０．４,Ｐ＜ ０．０５）     

原发性高血压左室重量与Q简期离散度的关系

观察７９例原发性高血现人的血压、左重量指数（ＬＶＭＩ）和ＱＴ间期离散度（ＱＴｃｄ）及ＱＴｃｄ％的变化,以探讨ＱＴｃｄ与ＬＶＭＩ及左室肥厚（ＬＶＨ）４ 关系。结果显示,高血压伴ＬＶＨ组的ＱＴｃｄ及ＱＴｃｄ％均明显高于无ＬＶＨ组;ＱＴｃｄ及ＱＴｃｄＴ随ＬＶＭＩ增高而增高（ｒ＝０．７７２０,ｒ＝０．６７９８）,与血压均无明显相关,提示ＱＴｃｄ的增加不是血压变化所引起,而系左室肥厚所致。     

左心室肥厚对高血压病患者QT离散度的影响

目的：观察左心室肥厚（ＬＶＨ）对高血压病（ＥＨ）患者ＱＴ离散度（ＱＴｄ）的影响。方法：对７０例高血压病患者和３０例正常人行常规１２导联心电图和心脏超声检查。用心脏超声检测法求得左心室重量。从心电图上测得ＱＴｄ与较正后ＱＴｄ（ＱＴｃｄ）。对３３例ＬＶＨ患者行２４ｈ动态心电图检查,将Ｌｏｗｎ氏分级三级以上定为有室性心律失常者。结果：ＥＨ合并ＬＶＨ组（ＥＨ＋ＬＶＨ组）患者ＱＴ与ＱＴｃｄ明显大于ＥＨ无合并     

不同病因致左室肥厚的QT离散度

目的 对比观察各种病因引起的左室肥厚的ＱＴ离散度。方法 二维超声心动图同高血压左室最组（ＥＨ）３０例,肥厚型心肌病组（ＨＣＭ）１５例,主动脉瓣狭窄组（ＡＳ）１５例,正常组３０例。比较４组体表心电图ＱＴ离散度（ＱＴｃ）和校正的ＱＴ度苴度（ＱＴｃｄ）。结果 病理性左室肥厚三组的ＱＴｄ和ＱＴｃｄ均明显大于对照组（Ｐ〈０．０１）;ＨＣＭ组和ＡＳ组且明显增大（Ｐ〈０．９５,Ｐ〈０．０１和Ｐ〈０．０５,Ｐ〈０     

高血压性左心室肥厚与QTc间期关系

研究了４１例高血压性左心室肥厚患者超声心动图左心室舒张末期内径（ＬＶＤｄ）和心电图ＱＴｃ间期的关系。结果显示：①左心室肥厚者ＱＴｃ间期延长（ｘ２＝１１．７０１，Ｐ＜０．０１），②左心室肥厚程度与ＱＴｃ间期延长呈直线性相关关系（ｒ＝０．４０，Ｐ＜０．０１）。     

高血压病人Q-Td对左室肥大的诊断价值

目的通过观察４８例高血压病人心电图ＱＴ离散度，了解高血压病合并ＬＶＨ时ＱＴ离散度的变化。方法４８例高血压病人，按超声心动图检查结果分为左心室肥厚（ＬＶＨ）组与非ＬＶＨ组，测量比较两组校正ＱＴ离散度，并试以校正ＱＴ离散度≥５０ｍｓ作为ＬＶＨ诊断指标，考察其特异性和敏感性。结果ＬＶＨ组校正ＱＴｄ较非ＬＶＨ组增大（Ｐ＜０．０００１）。以校正ＱＴｄ≥５０ｍｓ作为ＬＶＨ诊断高血压并发ＬＶＨ的特异性达８０％，敏感性为８７％。结论高血压并ＬＶＨ，心电图ＱＴｄ增大，以校正ＱＴｄ≥５０ｍｓ作为ＬＶＨ诊断指标是实用可靠的。     

运动试验诱发老年人心肌缺血时的QT离散度

为探讨运动试验诱发老年人心肌缺血时ＱＴ离散度（ＱＴｄ）及ＱＴｃ离散度（ＱＴｃｄ）变化的机制及临床意义,观察４０例老年人运动前后ＱＴｄ及ＱＴｃｄ,结果显示：阳性组２２例,阴性组１８例。运动前两组间无显著性差异（Ｐ〉０．０５）。运动后与运动前比较,阴性组差异仍无显著性（Ｐ〉０．０５）,而阳性组ＱＴｄ及ＱＴｃｄ增大,差异有显著性（Ｐ〈０．０１）。运行后两组间差异亦有显著性（Ｐ〈０．０１）。认为运动试验诱     

急性心肌梗塞QT离散度的变化及临床意义

对急性心肌梗塞（ＡＭＩ）患者８０例发病４８小时内首次心电图（ＥＣＧ）和发病三周以后ＥＣＧ的ＱＴｃ离散度（ＱＴｃｄ）分别进行了测定，并以４０例正常人作对照。结果：ＡＭＩ组ＱＴｃｄ显著高于对照组（Ｐ＜０．０１），ＡＭＩ早期发生室性心律失常组ＱＴｃｄ显著高于非心律失常组（Ｐ＜０．０１），提示ＱＴｃｄ愈大，室性心律失常发生的可能性愈大。发病三周以后患者ＱＴｃｄ显著小于ＡＭＩ组（Ｐ＜０．０５），并提示ＱＴｃｄ持续显著增大者，可能发生心源性猝死。不同部位ＡＭＩ患者之间ＱＴｃｄ无显著性差异（Ｐ＞０．０５）。认为，ＡＭＩ可致ＱＴｃｄ增大，而且ＱＴｃｄ可作评估ＡＭＩ早期以及远期预后的重要参考指标     

高血压病左心室肥厚QTd检测

目的 探讨高血压病患者左室肥厚和舒张功能受损时的ＱＴ离散度（ＱＴｄ）变化。方法 ７４例高血压病患者，用多导联同步心电图测量并计算出ＱＴｄ，超声心动图测量Ｅ／Ａ比值和等容舒张时间（ＩＲＴｍｓ），计算左室重量（ＬＶＭ）和左室重量指数（ＬＶＭＩ），作相关分析。结果 左室肥厚（ＬＶＨ）组４６例的ＱＴｄ显著高于非ＬＶＨ组，Ｐ〈０．００１。ＬＶＨ组均有不同程度的Ｅ峰下降、Ａ峰增大、Ｅ／Ａ比值减少及ＩＲＴ延长。     

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.