射频消融术治疗阵发性室上性心动过速382例临床分析

目的评估经导管射频消融术(RFCA)治疗阵发性室上性心动过速的临床疗效。方法对心内科近两年382例伴不同阵发性室上性心动过速的患者采用射频消融治疗,对治疗结果进行回顾性分析,比较左侧旁道、右侧旁道及房室结双径路伴阵发性室上性心动过速患者术后成功率、复发率及并发症发生率等临床数据的差异。结果房室折返性心动过速患者174例,其中左侧旁道113例,右侧旁道61例;房室结折返性心动过速208例。射频消融总成功率为97.4%,其中房室结双径路和左侧房室旁道介导的阵发性室上速射频消融成功率达98.4%。射频消融术后总复发率为2.6%,并发症发生率为1.8%。结论射频消融治疗快速室上性心律失常安全、有效,成功率高,并发症发生率低。右侧旁道消融复发率高于左侧旁道及双径路。     

149例右侧房室旁道导管射频消融治疗分析

目的分析右侧房室旁道电生理特性及导管射频消融术(RFCA)操作要点,试图总结实用有效的常规消融方法。方法心内电生理检查与射频消融同时进行,利用RFCA技术阻断右侧房室旁道参与的折返性心动过速149例,其中显性旁道97例,隐匿性52例。结果149例患者中经射频消融治疗首次消融成功140例(93.9%),最终成功145例(97.3%)。其中1例出现一过性Ⅲ度房室传导阻滞(Ⅲdegree atrioventricular block,Ⅲ° AVB),1例出现一过性Ⅱ°Ⅰ型AVB,2例出现一过性Ⅰ°AVB,其余未见其他并发症。随访2个月~9年,5例(3.4%)复发,经再次RFCA均消融成功。结论准确的旁道定位及消融导管与靶组织的稳定接触是成功的关键。     

射频消融治疗阵发性室上性心动过速103例回顾分析

目的总结阵发性室上性心动过速(PSVT)的射频消融(RFCA)治疗的临床经验。方法对103例行RFCA的PSVT患者的射频消融方法、成功率、复发率及并发症等进行回顾性分析。结果103例室上性心动过速中房室结折返性心动过速(AVNRT)38例,房室旁路折返性心动过速(AVRT)65例,消融总成功率89%。随访20.6±24.7个月,AVNRT消融复发率16.7%,永久性Ⅲ度房室传导阻滞(AVB)发生率5.3%;AVRT消融复发率3.6%,永久性Ⅲ度AVB发生率1.5%。结论导管射频消融(RFCA)治疗PSVT安全、有效;熟练的心导管技术、仔细的电生理检查、耐心地寻找最满意的靶点图以及合适的消融能量和时间是提高成功率及最大限度地减少并发症的关键。     

射频消融术治疗阵发性室上性心动过速482例临床分析

目的:探讨射频消融术治疗阵发性室上性心动过速的临床特点及疗效。方法:482例阵发性室上性心动过速患者,经心脏电生理检查,有手术适应症,行射频消融术根治,观察临床特点及疗效,所有手术患者进行1年随访。结果:房室结双径路消融总成功率94.4%,复发率2.38%,并发症的发生率1.54%。房室旁道消融总成功率95.2%,复发率4.63%,并发症的发生率1.58%。总成功率94.8%,总复发率2.48%。总并发症发生率2.28%。结论:经导管射频消融是治疗阵发性室上性心动过速的有效方法,其成功率及安全性高,患者易接受。     

导管射频消融术治疗右侧房室旁道体会

目的 :总结射频消融右侧旁道治疗房室折返性心动过速的效果和经验。方法 :导管射频消融右侧旁道 42例 ,根据心内电生理检查 ,确定右侧房室折返性心动过速 ,采取左前斜位 30°透视下 ,细标消融导管沿三尖瓣环寻找靶点 ,即最短AV和VA间期且A/V比例≤ 1/ 4或AV或VA波融合处即可消融。结果 :除 1例右侧游离壁显性旁道未阻断、逆传阻断外 ,其余 41例旁道均被消融阻断 ,成功率 97 6 %。随访期 2 2± 3 6 ( 1～ 6 4)个月 ,未发现术后并发症。复发 7例 ,4例再次消融成功 ,复发率 2 2 8%。结论 :RFCA治疗右侧房室折返性心动过速安全、有效。     

射频消融术治疗室上性心动过速1 000例的疗效

目的评价射频消融术治疗阵发性室上性心动过速的安全性和有效性. 方法 1*!000 例阵发性室上性心动过速的患者接受射频消融术,术后平均随访25±19月(1～110月). 结果射频消融术治疗室上性心动过速的总成功率为98.9%(989/1 000),其中旁道参与的心动速度590例(598条旁道),阻断588条,成功率98.3%;房室结折返性心动过速410例,慢径消融成功率为99.8%.14例(1.4%)患者出现并发症.随访期间,16例(1.6%)患者复发,再次接受射频消融术均获成功. 结论射频消融术是目前治疗阵发性室上性心动过速最为有效的手段,其成功率高,并发症少,复发率低.     

射频消融治疗阵发性室上性心动过速32例临床分析

目的:分析射频消融术(RFCA)治疗阵发性室上性心动过速PSVT的效果。方法:采用RFCA治疗32例阵发性室上性心动过速患者。结果:32例患者行RFCA,消融成功率94.4%,2例复发后再次消融成功。结论:射频消融术治疗阵发性室上性心动过速安全、有效。     

合并心脏血管畸形的阵发性室上性心动过速的导管射频消融体会

目的回颐6种特殊类型快速心律失常的导管射频消融(RFCA)效果。方法经导管标测和射频消融。结果3例合并左上腔静脉干永存的阵发性室上性心动过速(PSVT),均为左侧旁道,1次消融成功;2例二尖瓣狭窄患者为左侧旁道,行二尖瓣球囊成形术后,1次消融成功;1例合并Ebstein畸形的PSVT患者,为右侧旁道,导管消融3个月后复发,再次消融成功。结论合并心脏血管畸形的PSVT患者进行RFCA是安全、有效的。     

射频消融房室旁道治疗预激综合征

对１７例预激综合征并阵发性室上性心动过速（ＰＳＶＴ）病人施行射频消融术。１６例为单房室旁道（ＡＰ），１例为双ＡＰ。１４条左侧旁道及１条右侧旁道消融获得成功，成功率为８２．４％。无严重并发症。随访１～１３个月仅１例右前膈ＡＰ复发。射频消融是治疗房室折返性心动过速的有效方法，今后应加强右侧ＡＰ消融的研究。     

射频消融术治疗室上性心动过速1 000例的疗效

目的评价射频消融术治疗阵发性室上性心动过速的安全性和有效性. 方法 1*!000 例阵发性室上性心动过速的患者接受射频消融术,术后平均随访25±19月(1～110月). 结果射频消融术治疗室上性心动过速的总成功率为98.9%(989/1 000),其中旁道参与的心动速度590例(598条旁道),阻断588条,成功率98.3%;房室结折返性心动过速410例,慢径消融成功率为99.8%.14例(1.4%)患者出现并发症.随访期间,16例(1.6%)患者复发,再次接受射频消融术均获成功. 结论射频消融术是目前治疗阵发性室上性心动过速最为有效的手段,其成功率高,并发症少,复发率低.     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.