导读:本文包含了冠状动脉阻断论文开题报告文献综述、选题提纲参考文献及外文文献翻译,主要关键词:冠状动脉,受体,心肌,阻断剂,造影,血管,综合征。
冠状动脉阻断论文文献综述
余福玲,汪义云,谢泓,柴大军,苏津自[1](2017)在《肾素血管紧张素系统阻断剂对冠状动脉介入治疗后对比剂肾病的影响》一文中研究指出目的观察肾素血管紧张素系统(RAS)阻断剂(RASI)对冠状动脉介入术后对比剂急性肾损害(CI-AKI)的影响。方法根据介入术前RASI应用情况将401例患者分为3组:血管紧张素转换酶抑制剂(ACEI)组(n=204);血管紧张素受体拮抗剂(ARB)组(n=63);非RASI组(n=134)。同时根据估算的肾小球滤过率(eGFR),再将各组分为肾功能正常组[eGFR>90mL/(min·1.73m~2)]和轻度肾功能不全组[eGFR 60~90mL/(min·1.73m~2)]两个亚组。所有患者围手术期均给予常规水化,测定冠状动脉介入术前及术后24、72h肾功能变化,观察CI-AKI的发生情况。结果与非RASI组相比,应用对比剂后72h,ARB组(14.3%比5.2%,P<0.05)和ACEI组(11.3%比5.2%,P<0.05)CI-AKI的发生率均升高。ACEI组介入前与介入后血肌酐、eGFR和血尿素氮水平与非RASI组差异无统计学意义,ARB组血肌酐高于ACEI组和非RASI组[24h:(98.0±46.8)比(86.0±33.0)、(84.4±24.9)μmol/L;72h:(102.5±49.2)比(91.1±38.9)、(87.2±26.0)μmol/L;均P<0.05],eGFR低于ACEI组和非RASI组[24h:(74.3±23.0)比(84.4±29.0)、(84.2±24.7)mL/(min·1.73m~2);72h:(70.6±21.9)比(80.1±27.7)、(81.4±25.3)mL/(min·1.73m~2);均P<0.05]。在肾功能正常人群,ARB组CI-AKI发生率显着高于非RASI组(17.1%比4.5%,P<0.05);在轻度肾功能不全人群,ACEI组CI-AKI发生率较非RASI组升高(13.4%比6.7%,P<0.05)。结论冠状动脉介入术前ARB治疗显着增加肾功能正常者CI-AKI发生,而对肾功能受损患者,ACEI显着增加CI-AKI发生。(本文来源于《中华高血压杂志》期刊2017年12期)
胡懦平,刘娜,谭光萍,张金娥,梁瑜[2](2015)在《β受体阻断剂与硝酸甘油联合应用对冠状动脉成像质量的影响》一文中研究指出目的联合β受体阻断剂及硝酸甘油降低心率,评估药物对冠状动脉CTA图像质量的影响。方法 60例高心率患者采用计算器随机数字法随机分成两组各30例,冠脉CTA检查前分别给予β受体阻断剂及联合应用β受体阻断剂及硝酸甘油喷雾剂。将冠状动脉分为十三节段,其中通过四分法评估冠脉图像质量。分析两种处理所得的全程冠状动脉、近段冠脉及远段冠脉图像质量评分进行比较,采用Kruskal-Wallis H检验,p<0.05为差异有统计学意义。结果两种处理冠状动脉评分H值为9.432,p<0.002;冠脉优良率H值为7.476,可诊断率无统计学差异。其中B组所得冠脉图像质量最佳。结论在不改变冠脉可诊断率的情况下,联合应用β受体阻断剂及硝酸甘油喷雾较单纯应用β受体阻断剂更能提高冠脉CTA图像质量。(本文来源于《现代医院》期刊2015年06期)
李江涛,刘宇,牛龙刚,崔丽娟,侯晓敏[3](2014)在《细胞外酸性环境对大鼠冠状动脉环静息张力的影响及其与钾通道阻断剂的关系》一文中研究指出目的观察细胞外液酸化对大鼠离体冠状动脉环静息张力的作用,并探讨钾通道阻断剂对其的影响。方法采用PowerLab和DMT微血管环张力记录系统,观察细胞外液酸化对大鼠离体冠状动脉环静息张力的影响。观察电压依赖性钾通道(KV)阻断剂4-AP(0.3mmol/L、1mmol/L)、ATP敏感性钾通道(KATP)阻断剂Gli(0.003mmol/L、0.01mmol/L、0.03mmol/L)、钙激活钾通道(KCa)阻断剂TEA(1mmol/L、3mmol/L)对浴液pH值梯度改变(7.2、7.0、6.8、6.6)时大鼠离体冠状动脉环张力的影响。结果 1静息状态下,随pH值梯度降低,大鼠冠状动脉环张力逐渐增高,其最大收缩率分别为(4.51±1.48)%、(42.74±8.32)%、(80.18±5.63)%、100%。24-AP 0.3mmol/L在pH6.6时减弱大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率为最大收缩的(85.85±6.61)%;4-AP 1mmol/L在pH7.0、pH6.8、pH6.6时均能减弱大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(15.39±9.68)%、(42.06±12.81)%、(55.75±15.66)%。4-AP对pH值梯度降低引起大鼠冠状动脉环的收缩有抑制作用。3Gli 0.003mmol/L在pH6.8、pH6.6时增强大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(114.12±15.62)%、(120.24±13.78)%;Gli0.01mmol/L在pH6.8、pH6.6时减弱大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(56.19±3.98)%、(59.07±5.52)%;Gli 0.03mmol/L在pH6.8、pH6.6时减弱大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(46.19±8.64)%、(29.73±6.12)%。Gli对pH值梯度降低引起大鼠冠状动脉环收缩的作用呈双向性。4TEA 1mmol/L在pH7.0、pH6.8时增强大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(68.37±17.77)%、(103.22±10.27)%;TEA 3mmol/L在pH7.0、pH6.8、pH6.6时增强大鼠冠状动脉环的收缩幅度(P<0.05),其最大收缩率分别为最大收缩的(64.97±11.79)%、(119.32±17.81)%、(134.77±18.20)%。TEA对pH值梯度降低引起大鼠冠状动脉环的收缩有增强作用。结论酸中毒时,随细胞外环境pH值梯度降低,大鼠冠状动脉环静息张力逐渐增高。该收缩可能与KV通道、KATP通道、KCa通道的开放或关闭有关。(本文来源于《中西医结合心脑血管病杂志》期刊2014年09期)
谭宁,刘勇[4](2011)在《围手术期使用肾素血管紧张素系统阻断剂对急性心肌梗死患者冠状动脉介入治疗后对比剂肾病的影响》一文中研究指出目的探讨围手术期肾素血管紧张素系统(RAS)阻断剂对急诊行冠状动脉介入术(PCI)后对比剂肾病的影响。方法连续入选行急诊PCI术急性心肌梗塞患者,排除继发性高血压,血压<90 mm Hg无法耐受RAS阻滞剂,血清肌酐>265μmol/L,孤立肾、移植肾、双侧肾动脉狭窄,有血管神经性水肿史者,对比剂过敏,严重肝功能不全,严重感染及使用N乙酰半胱氨酸或NSAID、二甲双胍、氨基糖苷类患者。采用单中心的前瞻性非随机对照研究方法,按围手术期(急诊PCI手术(本文来源于《第十叁次全国心血管病学术会议论文集》期刊2011-06-23)
杨军,佟玉章,郭启勇,任卫东[5](2007)在《经静脉心肌造影对犬冠状动脉阻断后存活心肌评价的实验研究》一文中研究指出目的:探讨经静脉心肌造影(MCE)对犬冠状动脉阻断后存活心肌判定的价值。方法:应用自制声学造影剂,对12条犬于冠状动脉阻断即刻、阻断后1h、4h和再灌注后1h进行经静脉心肌造影研究。结果:当冠状动脉阻断后,所有犬阻断的冠状动脉供血区心肌出现节段性的灌注缺损。阻断即刻与1h的灌注缺损区面积无明显差异,而阻断4h后灌注缺损面积较前两者变小,在阻断早期灌注缺损区域部分变为正常或灌注减低区。灌注减低区对应的氯化叁苯四氮唑染色显示为存活心肌。结论:冠状动脉阻断一定时间后MCE可以准确判定存活心肌。(本文来源于《中国医科大学学报》期刊2007年03期)
Lanfear,D.,E.,Jones,P.,G.,Marsh,S.,H.L.McLeod,王亭忠[6](2006)在《急性冠状动脉综合征后接受β受体阻断剂治疗的患者中β_2肾上腺素能受体基因型与生存率的关系》一文中研究指出Context: Previous data support an association between polymorphisms of the β1-and β2-adrenergic receptors(ADRB1 and ADRB2) and surrogate end points of response to β-adrenergic blocker therapy. However, no associations between these polymorphisms and mortality have been demonstrated. Objective: To evaluate the effect of ADRB1 Arg389Gly(1165 CG), Ser49Gly(145 AG), and ADRB2 Gly16Arg(46 GA), Gln27Glu(79 CG) genotypes on survival among patients discharged with prescribed β-blockers after an acute coronary syndrome(ACS). Design, Setting, and Patients: Prospective cohort study of 735 ACS patients admitted to 2 Kansas City, Mo, medical centers between March 2001 and October 2002; 597 patients were discharged with β-blocker therapy. Main Outcome Measure: Multivariable-adjusted time to all-cause 3-year mortality. Results: There were 84 deaths during follow-up. There was a significant association between ADRB2 genotype and 3-year mortality among patients prescribed β -blocker therapy. For the 79 CG polymorphism, Kaplan-Meier 3-year mortality rates were 16% (35 deaths), 11% (27 deaths), and 6% (4 deaths) for the CC, CG, and GG genotypes, respectively(P=.03; adjusted hazard ratios AHRs , 0.51 95% confidence interval {CI}, 0.30-0.87 for CG vs CC and 0.24(95% CI, 0.09-0.68) for GG vs CC, P=.004). For the ADRB2 46 GA polymorphism, 3-year Kaplan-Meier mortality estimates were 10% (17 deaths), 10% (28 deaths), and 20% (20 deaths) for the GG, GA, and AA genotypes, respectively(P=.005; AHRs, 0.48 95% CI, 0.27-0.86 for GA vs AA and 0.44 95% CI, 0.22-0.85 for GG vs AA, P=.02). No mortality difference between genotypes was found among patients not discharged with β -blocker therapy for either the 79 CG or 46 GA polymorphisms(P=.98 and P=.49, respectively). The ADRB2 diplotype and compound genotypes were predictive of survival in patients treated with β -blockers(P=.04 and P=.002; AHRs, 5.36 95% CI, 1.83-15.69 and 2.41 95% CI,0.86-6.74 for 46 A homozygous and composite heterozygous vs 79 G homozygous, respectively). No association of the ADRB1 variants with mortality was observed in either the β -blocker or no β -blocker groups. Conclusions: Patients prescribed β -blocker therapy after an ACS have differential survival associated with their ADRB2 genotypes. Further assessment of the benefits of β -blocker therapy in high-risk genotype groups may be warranted.(本文来源于《世界核心医学期刊文摘(心脏病学分册)》期刊2006年03期)
Bunch,T.,J.,Muhlestein,J.,B.,Bair,T.,L.,刘健[7](2005)在《β阻断剂对无心肌梗死或充血性心衰病史的冠状动脉疾病患者的死亡率和未来心肌梗死发生率的影响》一文中研究指出Beta-blocker therapy has been shown to benefit patients who have coronary artery disease and present with acute myocardial infarction(AMI) and/or congestive heart failure(HF). However, whether β-blocker therapy provides a similar benefit in patients who have coronary artery disease but not AMI or HF is unknown. A population of 4,304 patients who did not have HF but did have angiographically confirmed coronary artery disease(≥1 stenosis of ≥70%) without AMI at hospital presentation was evaluated. Baseline demographics, cardiac risk factors, clinical presentation, therapeutic procedures, and discharge medications were recorded. Patients were followed for a mean of 3.0±1.9 years(range 1 month to 6.9 years) for outcomes of all-cause death or AMI. Patients'average age was 65±11 years and 77%were men. Overall, 10%died and 5%had a nonfatal AMI. Discharge β-blocker prescription was associated with an increased event-free AMI survival rate for all-cause death(no βblocker 88.3%, βblocker 94.5%, p< 0.001) and death/AMI(no βblocker 83.4%, βblocker 89.2%, p< 0.001) but not non-fatal AMI(no βblocker 93.6%,βblocker 94.1%, p=0.60). After adjustment for 16 covariates, including statin prescription, angiotensin-converting enzyme inhibitor prescription, and type of baseline therapy, the effect of βblockers on the combination end point of death/AMI was eliminated. However, the effect of βblockers on death remained(hazard ratio 0.66, 95%confidence interval 0.47 to 0.93, p=0.02). Thus, βblockers are clearly indicated for most patients who have HF or AMI, and our results suggest that patients who have coronary artery disease without these conditions have approximately the same protective benefit against death. No effect was observed on longitudinal incidence of AMI or the combination of death/nonfatal MI.(本文来源于《世界核心医学期刊文摘(心脏病学分册)》期刊2005年09期)
Barbato,E,,Bartunek,J,,Aarnoudse,W[8](2005)在《α-肾上腺素能受体阻断剂与冠状动脉中度狭窄患者的充血性反应》一文中研究指出Maximal hyperaemia is paramount in the diagnosis of patients with coronary artery disease. However in these patients, enhanced α-adrenergic microvascular vasoconstriction may preclude adenosine to induce maximal hyperaemia. To assess the presence and the clinical relevance of residual microvascular resistance after administration of adenosine. Fractional flow reserve(FFR, calculated by coronary pressure measurements during adeno sine-induced hyperaemia) was assessed in 85 patients with an intermediate coronary stenosis(mean diameter stenosis of 50±1%) and normal left ventricular function which were divided into the following three groups: (a) 33 patients before and after IC bolus of phentolamine, an α1-, α2-adrenergic blocker; (b) 32 patients before and after IC bolus of urapidil, a selective α1-adrenergic blocker;(c) 20 patients before and after IC bolus of saline. Since minimal luminal diameter remained unchanged before and after phentolamine(1.46±0.06 vs. 1.47±0.06 mm, ns), urapidil 1.46±0.06 vs. 1.39±0.08, ns), and saline(1.56±0.08 vs. 1.55±0.08, ns), changes in FFR reflects changes in microvascular resistance. Overall, phentolamine and urapidil induced a slight but significant decrease in FFR(phentolamine: 0.79±0.02 vs. 0.77±0.02, p< 0.05; urapidil: 0.78±0.02 vs. 0.75±0.02, p< 0.05). However, only 6 patients showed a change in FFR from ≥0.75 to < 0.75 and no patients showed a change in FFR from ≥0.80 to < 0.75 that could have influenced clinical decision making. Saline did not induce any change in FFR. Phentolamine and urapidil induced only transient and negligible haemodynamic changes in heart rate and blood pressure. The administration of α-adrenergic blockers in addition to adenosine unmasks a small, yet clinically irrelevant, degree of residual microvascular tone. The consequential changes in FFR values do not significantly affect clinical decision making.(本文来源于《世界核心医学期刊文摘(心脏病学分册)》期刊2005年05期)
杨军,郭启勇,佟玉章,喻晓娜[9](2004)在《经静脉心肌超声造影对犬冠状动脉阻断后心肌灌注动态变化的研究》一文中研究指出目的 探讨自制超声造影剂经静脉心肌造影对犬冠状动脉阻断后不同时间灌注缺损面积对梗死面积评价的准确性。方法 应用超声处理仪振荡 5 %白蛋白和低分子右旋糖酐混合溶液 ,加入全氟丙烷 (C3 F8)气体自制超声造影剂 ;选择左心室乳头肌短轴观 ,对 12条犬于冠状动脉阻断前、阻断即刻和阻断后 1~ 4h进行经静脉心肌造影超声心动图研究。结果 阻断即刻的最大灌注缺损面积 (DA)占左心室乳头肌短轴观左心室壁心肌总面积百分比 (DA % )为 2 3 .0 1± 5 .3 3 ,阻断后 1~ 4h ,最大DA %与阻断即刻比较差异无显着性意义 (P >0 .0 5 )。阻断后最小DA %随时间发生变化 ,阻断即刻、阻断后 1、2、3、4h的最小DA %分别为 2 2 .19± 6.2 1,16.2 6± 3 .88,6.2 4± 2 .48,7.97± 2 .78和 8.80± 3 .45 (P <0 .0 1)。阻断后2~ 4h最小DA %与病理上梗死面积 (IA )占相应断面左心室心肌总面积百分比 (IA % )相关 ,r分别为0 .76,0 .80和 0 .85。结论 冠状动脉阻断后 ,心肌造影上最大灌注缺损面积无显着变化 ,而最小灌注缺损面积随时间变化 ,在阻断一定时间后 ,最小灌注缺损面积反映梗死面积。(本文来源于《中华超声影像学杂志》期刊2004年07期)
褚俊[10](2003)在《血小板糖蛋白Ⅱb/Ⅲa受体阻断剂在急性冠状动脉综合征中应用研究进展》一文中研究指出急性冠状动脉综合征 (ACS)包括不稳定性心绞痛 (UA)、非ST段和ST段抬高急性心肌梗死 (NSTEAMI和STEAMI)。近年来尽管ACS治疗获得进展 ,包括阿斯匹林、肝素、溶栓和介入治疗 ,但目前ACS仍是主要的致死原因之一。在ACS发病机理中(本文来源于《安徽医学》期刊2003年05期)
冠状动脉阻断论文开题报告
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目的联合β受体阻断剂及硝酸甘油降低心率,评估药物对冠状动脉CTA图像质量的影响。方法 60例高心率患者采用计算器随机数字法随机分成两组各30例,冠脉CTA检查前分别给予β受体阻断剂及联合应用β受体阻断剂及硝酸甘油喷雾剂。将冠状动脉分为十三节段,其中通过四分法评估冠脉图像质量。分析两种处理所得的全程冠状动脉、近段冠脉及远段冠脉图像质量评分进行比较,采用Kruskal-Wallis H检验,p<0.05为差异有统计学意义。结果两种处理冠状动脉评分H值为9.432,p<0.002;冠脉优良率H值为7.476,可诊断率无统计学差异。其中B组所得冠脉图像质量最佳。结论在不改变冠脉可诊断率的情况下,联合应用β受体阻断剂及硝酸甘油喷雾较单纯应用β受体阻断剂更能提高冠脉CTA图像质量。
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冠状动脉阻断论文参考文献
[1].余福玲,汪义云,谢泓,柴大军,苏津自.肾素血管紧张素系统阻断剂对冠状动脉介入治疗后对比剂肾病的影响[J].中华高血压杂志.2017
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