高血压左室重构与室性心律失常的关系

应用超声心动图观察１２０例高血压患者的左室构型,探讨左室重构与室性心律失常的关系及意义。结果发现左室重构与年龄,病程有关。正常构型,向心型重构,向心性肥厚,离心性肥厚复杂室性心律失常发生率依次为３．６％,２０％,２５％,３５．９％。提示高血压患者复杂室性心律失常的发生与左室的构型有关,伴有左室肥厚者,可能有室性心律失常易发性的病理基础。     

高血压左室重构与心律失常(附108例分析)

目的：探讨高血压左室重构与心律失常的关系。方法：用超声心劝图和动态心电图对１０８例高血压患者进行检查,结果：检出左室重构病人３５例,占３２．４％,其中向心性心室重构５例,离心性肥厚１０例,向心性肥厚２０例,房性心律失常,室性心律的占离心性肥厚、向心性肥厚与正常构型,正常对照组相比,Ｐ〈０．０５。结论：高血压时房性心律失常,室性心律失常的发生和高血压时左室构型有关,其中离心性肥厚、向心性肥厚心律失常     

364例原发性高血压左室肥厚的心律失常分析

目的:探讨原发性高血压左室肥厚与心律失常的关系。方法:收集364例原发性高血压患者的资料,对其超声心动图左室重量指标的测定,与其静息同步12导联心电图、动态心电图心律失常发生情况进行比较,寻找有无相关性。结果:左心室肥厚组平均左室重量指标水平为(152.6±15.8)g/m2,和左心室正常者相比差异有显著性(P<0.01)。左心室肥厚组室性心律失常及复杂性室性心律失常的检出率为87.18%和44.87%,明显高于左心室正常组(29.80%和8.65%),差异有显著性(P<0.01)。结论:原发性高血压左心室肥厚相关性心律失常与左室肥厚的程度有明显的关系。     

老年高血压患者不同左室构型对心功能和颈动脉结构的影响

目的 观察不同左室构型的老年高血压患者心功能和颈动脉结构的变化. 方法 78例老年高血压患者根据超声左室构型分为四组:正常构型组(n=34)、向心性重构组(n=18)、向心性肥厚组(n=11)和离心性肥厚组(n=15).测定与比较各组24 h动态血压、左室功能、颈动脉内径、血流参数和斑块发生率.结果 向心性肥厚组24 h平均收缩压高于正常构型及向心性重构组(P＜0.01).离心性肥厚组左室射血分数低于正常构型组(P＜0.05),Tei指数高于正常构型组(P＜0.05).向心性肥厚和离心性肥厚组颈总动脉内-中膜厚度(IMT)均高于正常构型组(P＜0.05),且向心性肥厚组颈动脉分叉处IMT高于其他三组(P＜0.01).向心性肥厚组斑块检出率(54.55%)较高,但组间比较无显著差异.结论 在老年高血压人群中,不同左室构型左心功能和颈动脉结构变化不同,离心性肥厚者心功能受损最明显,心室肥厚者颈动脉重构发生率较高.     

高血压患者左室构型与QT离散度的关系

目的;探讨高血压患者左室构型与QT离散度（QTd）的关系。方法：应用超声心动图和体表心电图对100例高血压患者进行分析。根据超声心动图所测指标对高血压左室肥厚进行分型、分级,同时利用体表心电图计算出QTd和QTcd。结果：左室构型为向心性重构型、向心性肥厚型及离心性肥厚型组与正常组及正常构型组间有显著性差异（P＜0．05）,左室中、重度肥厚组与正常及轻度肥厚组间有显著性差异（P＜0．05）。结论：左室构型的变化引起QTd的增加,且随构型改变的加重,心肌肥厚程度加重,QTd和QTcd增加更显著,发生室性心律失常、心原性猝死的机率增大,临床治疗高血压应注重逆转左室肥厚。     

原发性高血压左室肥厚与心律失常的相关性研究

目的 探讨原发性高血压左心室肥厚与心律失常的关系.方法 收集182例原发性高血压患者的资料,对其超声心动图左室重量指标的测定,与其静息同步12导联心电图、动态心电图心律失常发生情况进行比较,寻找有无相关性.结果 左心室肥厚组平均左室重量指标水平为(152.6±15.8)g/m2,和左心室正常者相比差异有显著性(p＜0.01).左心室肥厚组室性心律失常及复杂性室性心律失常的检出率为87.18%和44.87%,明显高于左心室正常组(59.80%和8.65%),差异有显著性(p＜0.01).结论 原发性高血压左心室肥厚相关性心律失常与左室肥厚的程度有明显的关系.     

原发性高血压左室肥厚与心律失常的相关性研究

目的 探讨原发性高血压左心室肥厚与心律失常的关系.方法 收集182例原发性高血压患者的资料,对其超声心动图左室重量指标的测定,与其静息同步12导联心电图、动态心电图心律失常发生情况进行比较,寻找有无相关性.结果 左心室肥厚组平均左室重量指标水平为(152.6±15.8)g/m2,和左心室正常者相比差异有显著性(p＜0.01).左心室肥厚组室性心律失常及复杂性室性心律失常的检出率为87.18%和44.87%,明显高于左心室正常组(59.80%和8.65%),差异有显著性(p＜0.01).结论 原发性高血压左心室肥厚相关性心律失常与左室肥厚的程度有明显的关系.     

原发性高血压左室肥厚与心律失常的相关性研究

目的 探讨原发性高血压左心室肥厚与心律失常的关系.方法 收集182例原发性高血压患者的资料,对其超声心动图左室重量指标的测定,与其静息同步12导联心电图、动态心电图心律失常发生情况进行比较有无相关性.结果 左心室肥厚组平均左室重量指标水平为(152.6±15.8)g/m2,和左心室正常者相比差异有显著性(P＜0.01).左心室肥厚组室性心律失常及复杂性室性心律失常的检出率为87.18%和44.87%,明显高于左心室正常组(29.80%和8.65%),差异有显著性(P＜0.01).结论 原发性高血压左心室肥厚相关性心律失常与左室肥厚的程度有明显的关系.     

老年高血压患者不同左室构型对心功能和颈动脉结构的影响

目的观察不同左室构型的老年高血压患者心功能和颈动脉结构的变化。方法78例老年高血压患者根据超声左室构型分为四组:正常构型组(n=34)、向心性重构组(n=18)、向心性肥厚组(n=11)和离心性肥厚组(n=15)。测定与比较各组24 h动态血压、左室功能、颈动脉内径、血流参数和斑块发生率。结果向心性肥厚组24 h平均收缩压高于正常构型及向心性重构组(P<0.01)。离心性肥厚组左室射血分数低于正常构型组(P<0.05),Tei指数高于正常构型组(P<0.05)。向心性肥厚和离心性肥厚组颈总动脉内-中膜厚度(IMT)均高于正常构型组(P<0.05),且向心性肥厚组颈动脉分叉处IMT高于其他三组(P<0.01)。向心性肥厚组斑块检出率(54.55%)较高,但组间比较无显著差异。结论在老年高血压人群中,不同左室构型左心功能和颈动脉结构变化不同,离心性肥厚者心功能受损最明显,心室肥厚者颈动脉重构发生率较高。     

老年高血压左室肥厚与室性心律失常和心肌缺血的关系

目的 :了解老年原发性高血压左室肥厚与室性心律失常和心肌缺血的关系。方法 :1 2 0例老年 (≥ 6 0岁 )高血压患者经超声心动图测定左室质量指数 (L VMI) ,分为左室肥厚组 (A组 )和非左室肥厚组 (B组 )。经 2 4 h动态心电图测定 2 4 h室性早搏总数 (VPCs)、L own's分级 ,心肌缺血发作例数。结果 :与 B组比较 ,A组室性心律失常的发生率明显增加 (P <0 .0 1 ) ,无症状心肌缺血发生率亦明显高于 B组 (P <0 .0 1 )。结论 :老年原发性高血压左室肥厚引起室性心律失常和心肌缺血的发生率增加     

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.