肺静脉前庭线性消融治疗阵发性心房颤动的疗效观察

目的:探讨在Carto三维电解剖标测指导下行左心房环肺静脉前庭线性消融治疗阵发性心房颤动的疗效。方法:在Carto系统中对13例入选的阵发性房颤患者建立左心房三维电解剖图,通过肺静脉造影确定肺静脉开口,围绕左、右上、下肺静脉口完成环肺静脉前庭线性消融。预设温度43℃,最大功率30W,每点消融时间大于20s。局部电位振幅降低50%以上再移动靶点,逐点完成预定消融线,以肺静脉电位完全消失并观察半小时以上仍然未恢复为消融终点。结果:所有患者均成功达到消融终点,平均操作时间为181±41min,透视时间为60±23min,放电次数120±60次。术后随访8.0±8.0个月,仅第2例在术后第3天再发房颤,但数小时自动转复为窦性心律,其后维持为窦性心律,余均为窦性心律。所有患者均无肺静脉狭窄发生。结论:三维电解剖标测指导在左心房环肺静脉前庭行线性消融治疗阵发性房颤安全有效。     

三维立体标测指导下环肺静脉线性消融隔离肺静脉治疗房颤

目的：在三维立体标测系统（Carto—Merge）指导下进行环肺静脉线性消融隔离治疗房颤。方法：5例房颤患者（阵发性4例，持续性1例），术前行64排CT检查，重建出的左心房及肺静脉三维图像，在Carto—Merge指导下与患者的心脏解剖结构精确融合，在三维融合图上环肺静脉口周消融，实现肺静脉与左房电隔离。结果：5例患者全部完成预定线性消融，随访3个月4例无房颤发作，1例患者（持续性房颤）术后服用胺碘酮偶有阵发性房颠发作，3个月后无房早及房颤发作；1例患者发生心包填塞并发症；所有患者均无血栓及肺静脉狭窄并发症。结论：三维立体标测系统（Carto—Merge）指导下进行环肺静脉线性消融隔离治疗房颤安全有效。     

Carto-Merge技术指导下肺静脉前庭电解剖隔离的初期经验

目的:介绍应用Carto-Merge技术将左心房和肺静脉CT三维重建图像与Carto电解剖标测图像相整合,指导肺静脉前庭电解剖隔离治疗心房颤动的初期经验.方法:对13例阵发性和2例持续性房颤患者,应用Carto-Merge技术进行肺静脉前庭电解剖隔离.结果:消融前左心房各壁标测点为(103±13)个;图像融合后,点与面之间的配准距离为(1.8±0.2) mm;环左肺静脉消融点(66±15)个,环右肺静脉消融点(58±20)个;所有患者均达到肺静脉电隔离;手术时间(305±45) min,透视时间(52±18) min;术中、术后无并发症发生.结论:CT三维重建后的图像接近真实解剖,与Carto电解剖标测图像的整合图像可帮助术者校正和弥补Carto电解剖图像的不足,有助于提高手术成功率,减少并发症.     

Carto系统指导下环肺静脉线性消融治疗心房颤动

目的:观察Carto系统指导下环肺静脉线性消融治疗心房颤动的临床疗效.方法:28例心房颤动(阵发性23例,持续性5例)患者行射频消融治疗.Carto系统指导下构建左心房电解剖图,行双侧环肺静脉线性消融,环状标测电极验证肺静脉达到电隔离效果.若术中心房颤动不终止,则继续消融左房顶部线、二尖瓣峡部线或三尖瓣峡部线.如心房颤动仍未终止,遂行同步直流电复律恢复至窦性心律.结果:28例患者均成功完成手术,其中18例只需完成双侧环肺静脉线性消融,10例需要继续行左房顶部线、二尖瓣峡部线或三尖瓣峡部线的消融.随访3～29个月,2例复发房颤,2例复发房性心动过速,所有患者的手术成功率为86%.结论:Carto系统指导下环肺静脉线性消融治疗心房颤动短至中期随访效果确切,具有较高成功率.     

arto系统指导下环肺静脉线性消融治疗心房颤动

目的：观察Cano系统指导下环肺静脉线性消融治疗心房颤动的临床疗效。方法：28例心房颤动（阵发性23例,持续性5例）患者行射频消融治疗。Carto系统指导下构建左心房电解剖图．行双侧环肺静脉线性消融．环状标测电极验证肺静脉达到电隔离效果。若术中心房颤动不终止,则继续消融左房顶部线、二尖瓣峡部线或三尖瓣峡部线,如心房颤动仍未终止,遂行同步直流电复律恢复至窦性心律。结果：28例患者均成功完成手术．其中18例只需完成双侧环肺静脉线性消融,10例需要继续行左房顶部线、二尖瓣峡部线或三尖瓣峡部线的消融。随访3-29个月,2例复发房颤,2例复发房性心动过速,所有患者的手术成功率为86％。结论：Carto系统指导下环肺静脉线性消融治疗心房颤动短至中期随访效果确切．具有较高成功率。     

非接触三维标测系统指导下环肺静脉电隔治疗心房颤动的临床评价

目的:探讨非接触三维标测系统指导下环肺静脉电融隔离治疗心房颤动(房颤)的可行性和临床疗效.方法:28例药物治疗无效或不能耐受的房颤患者.其中23例阵发性房颤、5例持续性房颤.采用非接触三维标测系统(Ensite navX)建立左心房、肺静脉的三维等时电势图和电解剖图,并在距离肺静脉口1～2 cm处行环肺静脉及其周围组织电隔离.消融终点包括:完成所有环肺静脉消融径线;全部肺静脉均达电隔离;阴性诱发结果.结果:28例患者均达到消融终点;手术的总操作时间和X线曝光时间分别为(161.3±23.2)min和(38.0±6.8)min;随访6～17月,20例(71%)无房颤发作;8例(29%)有房颤复发,其中2例因其发作次数及时间均较术前明显减少未再消融,予以可达龙治疗可控制(术前可达龙治疗无效),6例行第2次消融,术中均发现肺静脉电位有不同程度的恢复,第2次术后4例房颤无再发,2例仍有发作但未再消融,予以可达龙治疗可控制.术中及随访期间无任何操作相关并发症.结论:非接触三维标测系统指导下的环肺静电隔离是治疗房颤的有效而安全的方法.肺静脉既是房颤的诱发机制,亦有可能参与房颤的维持.     

电解剖标测系统加单环状电极导管指导环肺静脉前庭线性消融电隔离肺静脉治疗心房颤动

目的 探讨电解剖标测系统(CARTO)加单Lasso导管指导下行环肺静脉前庭线性消融电隔离肺静脉治疗心房颤动(房颤)的初步经验. 方法 3例房颤患者接受治疗,其中阵发性房颤2例,持续性房颤1例.所有患者首先用CARTO系统进行左房重建,然后将一根Lasso导管置入肺静脉内,在肺静脉口外5～10 mm处行环肺静脉前庭线性消融,消融终点为双侧肺静脉完全电隔离. 结果 3例患者均成功达到消融终点,手术时间(205±46)min,X线透视时间(46±13)min.手术过程中无并发症发生.术后随访7个月,3例患者均未再发房颤,均无出现肺静脉狭窄. 结论 在CARTO加单Lasso导管指导下行环肺静脉前庭线性消融电隔离肺静脉治疗房颤安全有效.     

导管消融治疗心房颤动的有效性与安全性研究

目的探讨经导管消融治疗心房颤动的有效性和安全性。方法对32例阵发性房颤,4例持续性房颤患者进行导管消融治疗。其中,3例患者采用环状冷冻导管消融(cryoablation)隔离肺静脉;33例患者采用Lasso导管及三维电解剖标测(CARTO)指导的环肺静脉前庭线性消融。结果成功率:冷冻消融组为33.33%;CARTO组为90.9%。手术时间:CARTO组较冷冻消融组,手术时间延长,CARTO组手术时间为(325±79)min;冷冻消融(205±72)min,P<0.05。X线曝光时间:CARTO组较冷冻消融组,曝光时间缩短,CARTO组(43±16)min;冷冻消融为(55±18)min,P<0.05。并发症:冷冻消融无并发症;CARTO组出现2例心脏压塞;另有1例患者术后第2d出现脑栓塞,经药物治疗后,肢体障碍完全恢复。结论经导管冷冻消融及CARTO指导下,环肺静脉前庭线性消融治疗房颤的方法均安全有效。三维电解剖标测(CARTO)指导下的环肺静脉前庭线性消融术效果更好。     

联合Carto三维标测系统和单根Lasso电极指导心房颤动环肺静脉左房线性导管射频消融

目的评价Carto三维标测系统联合单根Lasso电极指导心房颤动(简称房颤)导管射频消融的效果。方法4例阵发性房颤患者,其中1例伴阵发性房扑,3例男性、1例女性,年龄(52±10)岁,房颤发作期限(3.3±1.8)年。术前心脏CT成像,术中运用Carto系统重建左房三维结构,并指导导管标测和消融;以冷肝素盐水灌注导管,行环肺静脉消融和左房顶部的线性消融术,消融完毕后,如患者仍显示为房颤,遂给予心律平70mg静脉注射,未见房颤复律,再给予100J行同步电复律。术后随访观察。结果4例均消融成功,平均消融导管射频消融(43±6)min,曝光时间为(48±7)min,未发生心脏穿孔和肺静脉狭窄等严重并发症,随访4~12个月无复发病例。结论联合应用Carto三维标测系统和单根Lasso电极指导进行房颤导管射频消融安全有效,使用单根Lasso电极较使用双根Lasso电极可以显著降低消融成本。     

单中心球囊冷冻消融术后房性快速性心律失常的电生理标测和再消融治疗

目的 对阵发性心房颤动(简称房颤)患者行球囊冷冻消融后复发房性快速性心律失常的电生理机制进行初步探讨.方法 连续入选阵发性房颤行球囊冷冻消融后复发房性快速性心律失常、并行再次消融的患者.术中使用三维电解剖标测系统,先对左心房进行电压标测,判断各支肺静脉及肺静脉前庭是否仍有电传导,若有,则行射频消融,完成肺静脉及肺静脉前...     

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.