急性心肌梗塞后QT离散度的演变及其与室性心律失常的关系

目的　研究急性心肌梗塞 (AMI)后QT离散度 (QTd)的演变及其对快速室性心律失常的预测价值。方法　测量 34例AMI后患者不同时期和伴室性心律失常时的QTd ,并与健康对照组 (90名 )相比。结果　AMI后患者的QTd在急性期 (72± 18ms)明显大于亚急性期 (5 8± 17ms,P <0 .0 1) ,亚急性期大于陈旧期 (49± 2 1ms,P <0 .0 1) ,均明显大于对照组 (36± 10ms,P <0 .0 1)。陈旧期内心功能Ⅰ级、Ⅱ级者的QTd(36± 14ms,41± 15ms)与对照组无明显差异 (P >0 .0 5 ) ,Ⅲ～Ⅳ级者的QTd(6 6± 2 0ms)明显延长 (P <0 .0 1)。 9例AMI伴室速 /室颤 (VT/VF)者的QTd(91± 18ms)显著长于急性期不伴VT/VF者 (70± 14ms,P <0 .0 1)。结论　AMI后 0～ 3天QTd显著延长 ,随梗塞愈合渐趋正常 ,QTd显著延长是预示危重室性心律失常的不良之兆     

溶栓治疗对急性心肌梗死QTcd的影响

目的　为探讨急性心肌梗死 (AMI)静脉溶栓治疗对心率校正QT离散度 (QTcd)的影响及其意义。方法　回顾分析 10例AMI静脉溶栓成功者溶栓前与溶栓 2 4h后心电图以及同期 10例未行溶栓治疗的AMI患者入院时与入院 2 4h后心电图 ,测定QTcd。结果　溶栓组治疗前后QTcd分别为 71.8± 16.3ms和 45 .6± 17.4ms ,差异有显著性(P <0 .0 1) ,未溶栓组为 72 .5± 17.0ms和 71.7± 15 .9ms ,差异无显著性 (P >0 .0 5 )。两组治疗 2 4h后QTcd差异有显著性 (P <0 .0 1)。结论　成功的溶栓能使紊乱的心肌复律恢复稳定 ,显著缩短AMI的QTcd ,改善预后。QTcd缩短可作为AMI溶栓成功指标之一。     

直接PTCA对急性心肌梗死的QT离散度的影响

目的　观察直接PTCA对急性心肌梗死 (AMI)患者QT离散度 (QTd)及QTc离散度 (QTcd)的影响。方法　对 30例AMI患者行直接PTCA ,使病变血管血流达到TIMI血流 3级 ,于PTCA术前、术后 2h、4 8h作同步 12导心电图并测量QTd及QTcd ,然后与 30例正常人对照。结果　AMI组与正常对照组间QTd及QTcd有极显著差异 (P <0 .0 1)。有室性心律失常的AMI患者其QTd和QTcd高于无室性心律失常患者 ,但差异无显著性(P >0 .0 5 ) ,PTCA术后其QTd和QTcd下降 (P <0 .0 1) ,室性心律失常好转。结论　成功的直接PTCA可降低AMI患者的QTd和QTcd ,减少室性心律失常的发生 ,改善预后     

高血压并阵发性心房颤动患者P波离散度改变

目的　探讨高血压病患者P波离散度改变规律。方法　观察 3 4例高血压并阵发性心房颤动患者 (房颤组 )的最宽P波 (Pmax)和P波离散度 (Pdisp) ,并与 3 9例无阵发性心房颤动的高血压病患者 (对照组 )对比分析。结果　房颤组的Pdisp为 5 1± 11ms ,其中Pdisp≥ 40ms为 2 9例 (85 .2 9% ) ;对照组的Pdisp为 3 6± 9ms ,其中Pdisp≥ 40ms为 5例 (12 .82 % )。两组比较差异均有高度显著性 (P <0 .0 1)。结论　Pdisp是预测高血压病患者心房颤动发生的可靠指标 ,当Pdisp≥ 40ms时预测有较高的敏感性和特异性。     

冠心病冠状动脉介入性治疗前后QT离散度的变化

目的 :探讨冠状动脉介入手术 (PTCA和冠状动脉内支架置入术 )对冠心病患者QT离散度 (QTd)的影响。方法 :记录 6 1例冠心病患者介入手术前后静态 12导联心电图 ,计算QTd ,并进行对比分析。结果 :6 1例冠心病患者介入性治疗前QTd为 (10 5 7± 41 3)ms ,介入性治疗后QTd为 (5 9 4± 2 8 6 )ms,前后相比QTd差异有显著性 (P <0 0 1)。PTCA术后与冠脉内支架置入术后QTd分别为 (6 2 9± 2 9 2 )ms和 (5 6 2± 2 8 1)ms,二者相比差异无显著性(P >0 0 5 )。结论 :冠心病经介入性治疗后QTd明显减小 ,QTd可作为介入手术后心肌再灌注成功的参考指标。是否可作为冠脉再狭窄的早期指标 ,有待于进一步观察     

AMI患者急诊PTCA+支架植入术对QT离散度的影响

目的观察26例急性心肌梗死(AMI)患者梗死相关血管(IRA)早期再灌注对QT离散度(QTd)的影响.方法对26例AMI患者予急诊冠状动脉造影,对IRA予急诊PTCA+支架术,在术前及术后24小时内分别记录体表12导联同步心电图,测量QTd,并监测严重心律失常发生情况.结果AMI患者行急诊PTCA+支架术后,IRA开通率100%,所有病人IRA血流达TIMIⅢ级.QTd从术前的(78.6±17.4)ms降至术后的(48.6±14.8)ms(P＜0.01).7例术前有恶性心律失常,其QTd明显高于无心律失常的患者(82.3±15.6)术后QTd降至(49.8±13.7),室性心律失常消失.结论急性PTCA+支架术可显著降低QTd,IRA早期再灌注可减少危险性心律失常的发生.     

三种心电信息对急性心肌梗塞患者恶性室性心律失常事件发生的预测价值

目的 :探讨心室晚电位 (VLP)、QT离散度 (QTd)、校正QT离散度 (QTcd)对急性心肌梗塞 (AMI)患者恶性室性心律失常事件发生的预测价值。方法 :测定 6 4例AMI患者和 30例健康人的VLP、QTd、QTcd ,并对AMI患者随访 1年。结果 :AMI组VLP阳性率 (4 2 2 % )较对照组 (6 7% )明显增高 (P <0 0 1) ,QTd、QTcd分别为 74 2± 18 4ms和 81 3± 2 2 6ms较对照组 (2 8 4± 10 6ms和 34 8± 15 3ms)明显延长 (P <0 0 1)。 6 4例AMI患者随访 1年发生恶性室性心律失常事件 18例 ,其中VLP阳性率、QTd、QTcd分别为 88 9%、86 5± 2 7 4ms、93 6± 34 8ms和非事件组(2 3 9%、6 2 7± 2 4 3ms、6 9 4± 2 5 2ms)比较 ,差异有显著性 (P <0 0 1)。在预测AMI患者恶性室性心律失常事件发生的敏感性 ,特异性和有效性QTd分别为 6 6 5 %、85 4%、78% ,QTcd分别为 72 4%、71 3 %、71% ,VLP分别为42 6 %、92 8%、6 8%。结论 :VLP(+ )和QTd、QTcd明显延长与AMI患者发生恶性室性心律失常事件密切相关 ,并可作为AMI患者预后和恶性室性心律失常事件发生可靠的 ,非侵入性预测指标。其中以QTcd敏感性最高 ,VLP(+ )最具特异性。     

P波离散度与阵发性心房颤动关系的探讨

目的 :探讨 P波离散度 (Pdisp)与阵发性心房颤动 (房颤 )之间的相互关系。方法 :应用体表心电图测定 46例阵发性房颤患者在转复成窦性心律时的 P波离散度 ,并与 46例健康体检者 (对照组 )对比分析。结果 :46例阵发性房颤组的 Pdisp为 (5 2± 10 ) ms,其中 Pdisp≥ 40 ms者为 42例 (91.3%) ;46例对照组的 Pdisp为 (2 8± 7) m s,其中 Pdisp≥ 40 ms为 5例 (10 .8%)。两组比较有非常显著性差异 (P <0 .0 1)。结论 :P波离散度是预测阵发性心房颤动发生的一个可靠的指标 ,当 P波离散度≥ 40 ms时预测有较高的敏感性和特异性。     

门冬氨酸钾镁治疗急性心肌梗死对QT离散度的影响

目的 :评估门冬氨酸钾镁治疗急性心肌梗死对QT离散度的影响。方法 :采用随机、单盲、对照的方法将44例急性心肌梗死患者在常规治疗的基础上分为两组。治疗组 (n =2 1 )给予静脉门冬氨酸钾镁治疗 ,对照组(n=2 3 )不用门冬氨酸钾镁治疗。取入院时、入院后 2 4h及 1周的心电图 ,测量QT离散度 ,观察急性心肌梗死后心律失常的发生率。结果 :治疗组与对照组QT离散度在入院后 2 4h分别为 61 .62±7.3 5ms和 71 .0 6±1 4.0 1ms(P <0 .0 5 ) ,1周时分别为 5 3 .0 7± 5 .64ms和 66.0 0± 1 0 .5 1ms(P <0 .0 5 )。治疗组与对照组住院期间室性心律失常的发生率分别为 2 3 .8%和 5 6.5 % (P <0 .0 5 )。结论 :门冬氨酸钾镁治疗急性心肌梗死可以减少QT离散度和室性心律失常的发生率。     

QT离散度在急性心肌梗塞预后中的临床意义

目的 :探讨 QTd对预测 AMI患者预后的价值。方法 :对 2 64例 AMI患者及1 0 0例正常人 QTd、JTd及 QTcd结果进行分析。结果 :QTd、JTd及 QTcd在 AMI组显著延长 ,分别为 63 .8± 1 7.4ms、5 9.4± 1 8.1 ms及 68.1± 2 0 .3 m s,明显高于对照组 2 4.7± 8.6ms、2 0 .3± 1 0 .1 ms及 2 8.1± 1 1 .3 ms;在有室性心律失常组分别为 71 .6± 2 1 .9ms、67.5±2 2 .1 m s及 75 .3± 2 3 .7m s,明显高于无室性心律失常组 5 3 .3± 1 9.2 ms、49.1± 1 7.6ms及5 4.2± 2 4.0 m s;在死亡组分别为 82 .6± 1 8.4ms、76.3± 1 7.6ms及 86.9± 1 9.6m s,亦明显高于生存组 5 6.5± 1 6.0 ms、5 3 .7± 1 6.5 ms及 61 .1± 2 0 .2 ms。结论 :QTd可作为识别 AMI后高危患者临床心电学的敏感指标之一 ,对判断 AMI预后有一定意义     

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

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.     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.     

Possible Spread of adenovirus type 3 from poultry to humans ：indirect evidence from an outbreak in China

Objective:To explore the epidemiology and etiology for an outbreak of acute respiratory tract infection that occurred in one county of Jiangsu Province, China 2004. Methods: Only cases meeting the case definition were included in the study. We reviewed the medical records of the cases who were admitted to the local hospitals, interviewed cases by a standard questionnaire, and then described the epidemiotogic features and analyzed risk factors by means of a case-control study. We collected pharyngeal swab specimens and sent them to different laboratories for isolation and culture. The laboratory used different detection methods such as DIP, PCR, electron microscope examination and microneutralization assay, to identify and then type the positive specimens. Results:A total of 871 cases were reported during the period from April 18 to July 4,2004. The distribution of onset times presented two peaks, one in late May and another in middle June. The epidemic occurred mainly in the elementary and junior high schools in ten townships of one county, and the mean age of the cases was 12 years (range 7 months to 18 years). The course of the disease was acute, and was characterized by fever accompanied with sore throat and tonsillitis. The WBC count of cases was normal or elevated. The mean duration of illness was 5 days (range 2 to 12 days). No fatalities from illness were reported. A case-control study indicated that the possible risk factors were close contact with a case and/or poultry before onset and sharing of towels among members of the family. The typical CPE was observed through inoculating pharyngeal swab specimens into the HEP-2 cell cultures in different laboratories. An infection of adenovirus type 3 was verified by detecting positive specimens in different methods. Conclusion:This investigation demonstrated that the acute respiratory infection in cases was caused by adenovirus type 3. Cases occurred in over 70 schools in ten townships in 2004, and the route of transmission was possibly close contact with cases or droplet transmission.