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排序方式: 共有139条查询结果,搜索用时 93 毫秒
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HEINER LANGENFELD AXEL KREIN MICHAEL KIRSTEIN LUDWIG BINNER† EUROPEAN PEA CLINICAL INVESTIGATION GROUP 《Pacing and clinical electrophysiology : PACE》1998,21(11):2187-2191
The peak endocardial acceleration (PEA, unit g) shows a near correlation with myocardial contractility during the isometric systolic contraction of the heart (dP/dtmax), with sympathetic activity and, thus, with physiological heart rate modulation. The (Biomechanical Endocardial Sorin Transducer (BEST) sensor is incorporated in the tip of a pacing lead and measures PEA directly near the myocardium. In an international study, the lead was implanted with the dual chamber pacemaker Living-1 (Sorin) in 105 patients. The behavior of the PEA signal was tested under conditions of physical and mental stress and during daily life activities by 24-hour recordings of PEA (PEA Holter) at 1 to 2 months and approximately 1 year after implantation. Implantation of the BEST lead was performed without complications in all patients. The sensor functioned properly in the short- and long-term in 98% of patients. Although PEA values differed from patient to patient, the values closely reflected the variations in sympathetic activity due to physical and mental stress in each patient. During exercise and during daily life activities a close correlation between PEA and heart rate was observed among patients with normal sinus rhythm. Peak endocardial acceleration allows a nearly physiological control of the pacing rate. 相似文献
3.
中国食管癌高发区食管原发性腺癌组织病理学研究Ⅰ.食管原发性腺癌的临床病理学分析 总被引:1,自引:0,他引:1
中国食管癌高发区河南省近15年(1980~1994)病理确诊的7364例食管癌中,其中食管原发性腺癌(PEA)239例,占3.25%。通过对239例PEA手术标本(包括早期癌20例,其余为中、晚期癌)切片系统观察,指出中国食管癌高发区PEA主要起源于食管固有腺体的各级导管部分。PEA的病理组织学可分6型:腺导管癌(109例)、腺鳞癌(54例)、腺样囊性癌(29例)、粘液表皮样癌(20例)、基底细胞样癌(15例)、胃型腺癌(12例)。每型的组织图象及预后均各有特点,提示PEA组织学再分型有意义。 相似文献
4.
目的:探讨免疫毒素BDI-1-PEA特异杀伤膀胱癌细胞的体外及体内研究.方法:应用MTT法检测不同浓度的BDI-1-PEA,BDI-1和PEA的混合物(BDI-1 PEA),PEA对体外癌细胞的杀伤能力.接种于裸鼠背部皮下的癌细胞长至0.3cm大小实体瘤时,于尾静脉隔日分别注入BDI-1-PEA、BDI-I、正常小鼠IgG共6次,观察不同的药物对癌的抑制作用.结果:免疫毒素BDI-1-PEA在体外抗膀胱癌细胞系E-J的作用明显优于PEA及BDI-1与PEA的混合物,在荷瘤裸鼠体内明显优于BDI-1及IgG,与对非靶细胞的细胞毒性作用相比较差异非常显著.结论:免疫毒素BDI-1-PEA是一种很有潜力的抗癌药物,为进一步临床研究奠定基础. 相似文献
5.
抗膀胱癌免疫毒素BDI-1-PEA特异杀伤肿瘤细胞的研究 总被引:4,自引:0,他引:4
新近利用抗原处理细胞(APC细胞)处理制备瘤疫效疗较为肯定,认为天然免疫细胞DC细胞瘤疫更有其应用价值.红细胞也是天然免疫细胞.能否用红细胞处理补体调理过的肿瘤细胞制备瘤苗是值得探讨的.有的学者认为红细胞是T细胞活性的调节器,我们的实验有可能为此提供的依据[Arosa FA, Currpharm Des, 2004, 10(27): 191]. 相似文献
6.
Jonathan C. Wilton Mark O. HardinJohn D. Ritchie Kevin K. ChungJames K. Aden Leopoldo C. CancioSteven E. Wolf Christopher E. White 《Burns : journal of the International Society for Burn Injuries》2013
Objective
Adult burn patients who experience in-hospital cardiac arrest (CA) and undergo cardiopulmonary resuscitation (CPR) represent a unique patient population. We believe that they tend to be younger and have the added burden of the burn injury compared to other populations. Our objective was to determine the incidence, causes and outcomes following cardiac arrest (CA) and cardio-pulmonary resuscitation (CPR) within this population.Methods
We conducted a retrospective review at the US Army Institute of Surgical Research (ISR) burn intensive care unit (BICU). Charts from 1st January 2000 through 31st August 2009 were reviewed for study. Data were collected all on adult burn patients who experienced in-hospital CA and CPR either in the BICU or associated burn operating room. Patients undergoing CPR elsewhere in our burn unit were excluded because we could not validate the time of CA since they are not routinely monitored with real-time rhythm strips. The study population included civilian burn patients from the local catchment area and burn casualties from the conflicts in Iraq and Afghanistan, but patients with do-not-resuscitate (DNR) orders were excluded.Results
We found 57 burn patients who had in-hospital CA and CPR yielding an incidence of one or more in-hospital CA of 34 per 1000 admissions (0.34%). Fourteen of these patients (25%) survived to discharge while 43 (75%) died. The most common initial cardiac rhythm was pulseless electrical activity (50.9%). The most common etiology of CA among burn patients was respiratory failure (49.1%). The most significant variable affecting survival to discharge was duration of CPR (P < 0.01) with no patient surviving more than 7 min of CPR.Conclusions
CPR in burn patients is sometimes effective, and those patients who survive are likely to have good neurological outcomes. However, prolonged CPR times are unlikely to result in return of spontaneous circulation and may be considered futile. Further, those who experience multiple CA are unlikely to survive to discharge. 相似文献7.
肺动脉血栓内膜剥脱术治疗慢性栓塞性肺动脉高压 总被引:1,自引:0,他引:1
目的:分析肺动脉血栓内膜剥脱术治疗慢性栓塞性肺动脉高压的疗效.方法:回顾性分析1994年3月~2005年6月,共进行134例肺动脉血栓内膜剥脱术,手术采用深低温间断停循环的方法进行.结果:总手术死亡率为9.7%,呈逐年下降(2004年为4.5%).主要死亡原因为气道出血、右心功能衰竭、败血症.再灌注肺水肿23例(17.2%),死亡1例.手术后平均肺动脉压力、平均动脉血氧分压、平均动脉血氧饱和度、平均肺血管阻力(PVR)、心脏指数(CI)均较术前改善,有显著统计学差异(P<0.01).92%的患者术后随访,最长10年.术后3月、1年、3年的生存率分别为(89.5±2.6)%,(87.8±2.9)%和(83.3±3.5)%.3年术后随访94%的患者心功能达到NYHA Ⅰ~Ⅱ级.结论:肺动脉血栓内膜剥脱术是治疗慢性栓塞性肺动脉高压有效治疗手段.合理的手术适应证、外科技术和围手术期处理是成功的关键. 相似文献
8.
目的探讨磷酸化PEA-15蛋白在胃癌组织中的表达情况及其临床意义。方法取新鲜胃癌标本50例,并以50例慢性胃炎组织作对照。运用免疫组织化学的方法检测磷酸化PEA-15蛋白的表达,并观察磷酸化PEA-15蛋白的表达与患者性别、年龄、肿瘤分化程度和临床分期的关系。结果胃癌组织中磷酸化PEA-15蛋白阳性表达增高,而慢性胃炎组织标本未测到(P0.05)。且磷酸化PEA-15蛋白的表达随着胃癌恶性程度增高及临床分期发展而增高(P0.05),而与发病年龄及性别无关(P0.05)。结论磷酸化PEA-15蛋白在胃癌的发生及发展过程中发挥重要作用,调控PEA-15磷酸化状态有望成为胃癌分子治疗的重要靶点。 相似文献
9.
Background
Experimental and animal studies suggested that vasopressin may have a favorable survival profile during CPR. This meta-analysis aimed to determine the efficacy of vasopressin in adult cardiac patients.Methodology
Meta-analysis of randomized control trials (RCTs) comparing the efficacy of vasopressin containing regimen during CPR in adult cardiac arrest population with an epinephrine only regimen.Results
A total of 6120 patients from 10 RCTs were included in this meta-analysis. Vasopressin use during CPR has no beneficial impact in an unselected population in ROSC [OR 1.19, 95% CI 0.93, 1.52], survival to hospital discharge [OR 1.13, 95% CI 0.89, 1.43], survival to hospital admission [OR 1.12, 95% CI 0.99, 1.27] and favorable neurological outcome [OR 1.02, 95% CI 0.75, 1.38]. ROSC in “in-hospital” cardiac arrest setting [OR 2.20, 95% CI 1.08, 4.47] is higher patients receiving vasopressin. Subgroup analyses revealed equal or higher chance of ROSC [OR 2.15, 95% CI 1.00, 4.61], higher possibility of survival to hospital discharge [OR 2.39, 95% CI 1.34, 4.27] and favorable neurological outcome [OR 2.58, 95% CI 1.39, 4.79] when vasopressin was used as repeated boluses of 4–5 times titrating desired effects during CPR.Conclusion
ROSC in “in-hospital” cardiac arrest patients is significantly better when vasopressin was used. A subgroup analysis of this meta-analysis found that ROSC, survival to hospital admission and discharge and favorable neurological outcome may be better when vasopressin was used as repeated boluses of 4–5 times titrated to desired effects; however, overall no beneficial effect was noted in unselected cardiac arrest population. 相似文献10.