抑制血管紧张素系统降低心房颤动的发生:临床和实验的证据

多项临床回顾性研究表明血管紧张素转换酶抑制剂(ACEI)和血管紧张素受体阻滞剂(ARB)能降低高血压和左室肥厚、心肌梗死后左室功能异常、慢性心力衰竭患者心房颤动(AF)的发生,并且能预防电转复AF的复发。说明ACEI和ARB治疗AF危险因素的病人能获益。ACEI和ARB临床抗心律失常机理可能是通过预防基质重构介导,直接的离子通道的调节特性也可能有作用。然而,目前还没有充分的前瞻性双盲试验资料和坚实的临床证据推荐单独使用ACEI或ARB治疗去预防AF。ACEI和ARB抗心律失常机制有待进一步研究。     

血管紧张素Ⅱ受体拮抗剂对肾脏的保护作用

肾素-血管紧张素系统(RAS)对于血压和水电解质平衡的调节起重要作用。它通过一系列酶促反应将血管紧张素 (Ang)I转化为AngⅡ,AngⅡ与细胞表面的血管紧张素受体结合而发挥生物学作用。RAS的阻滞剂分为三类,第一类是血管紧张素转换酶抑制剂(ACEI),第二类是AngⅡ受体拮抗剂(ARB),第三类是选择性肾素抑制剂。其中ARB从受体水平阻断AngⅡ的作用,使用更特异、有效,应用前景广阔。本文就ARB肾脏保护的基础与临床研究综述如下。     

血管紧张素受体阻滞剂治疗ST段抬高型心肌梗死保留左心室收缩功能患者的效果

目的观察血管紧张素受体阻滞剂(ARB)治疗与ST段抬高型心肌梗死(STEMI)保留左心室收缩功能患者的临床预后之间的关系。方法前瞻性观察3 340例STEMI左心室射血分数(LVEF)≥40%患者的临床资料。主要预后指标包括心源性死亡或心肌梗死。患者分为ARB组(n=582)、血管紧张素转换酶抑制剂(ACEI)组(n=2 282)、未给予任何肾素血管紧张素系统阻滞剂组(No RAS组,n=476)。结果 ARB组心源性死亡11例(1.89%),ACEI组死亡39例(1.70%),No RAS组死亡17例(3.57%)。倾向匹配后,ARB组和ACEI组的心源性死亡率或心肌梗死组间比较无差异(1.89%vs 2.02%),校正风险比0.65,95%CI 0.30~1.38;ARB组与No RAS组比较,心源性死亡率或心肌梗死较低(1.71%vs 3.18%),校正风险比0.35,95%CI 0.14~0.90(P=0.03)。结论 ARB与ACEI对STEMI保留左心室收缩功能患者的有利影响相当,二者均可用于这类患者的治疗。     

RAS抑制剂预防心房颤动研究进展

大量研究证实肾素-血管紧张素-醛固酮系统(RAS)的激活在心房颤动(房颤)的发生、发展中起重要作用。RAS抑制剂包括血管紧张素转化酶抑制剂(ACEI)和血管紧张素Ⅱ受体拮抗剂(ARB),通过阻断RAS激活,尤其是阻断血管紧张素Ⅱ     

血管紧张素转换酶抑制剂和血管紧张素Ⅱ

高血压是促使肾小球疾病进展的重要因素之一,阻断肾素-血管紧张素系统(RAS)能降低全身血压及肾小球毛细血管内压力,保护肾脏,延缓肾衰进展.多种药物能在不同环节阻断RAS,其中血管紧张素转换酶抑制剂(ACEI)能抑制血管紧张素转换酶(ACE)而减少血管紧张素Ⅱ(ATⅡ)的产生,ATⅡ受体拮抗剂(ARA)则通过阻断ATⅡ与其特异性受体结合,而发挥降压作用.由于ACEI和ARA阻断RAS的机制不同,这二类药物在降低血压、减少蛋白尿、保护肾功能方面是否存在差异[1],二者联合应用是否更为合理?本文从ACEI、ARA作用机制及特点等方面加以讨论.     

肾素—血管紧张素系统与高血压研究进展

肾素 -血管紧张素系统 ( RAS)在血压的调控方面起着极为重要的作用。从理论上讲 ,阻断 RAS的任一环节 ,对治疗高血压都是有益的[1] 。血管紧张素转换酶抑制剂 ( ACEI)已被大规模的临床试验证实具有逆转心室肥厚作用 ,降低心肌梗塞及充血性心力衰竭死亡率达 30 %以上 [2～ 3 ]。由于 ACEI不能完全阻断 RAS,因此 ,人们开始对研究阻断 RAS的最后一个环节——血管紧张素 ( Ang )受体产生兴趣。在应用 ACEI的基础上 ,联合应用血管紧张素 受体拮抗剂 ,即最大限度地阻断 RAS,以探讨对血流动力学和组织的影响 ,进一步降低高血压、心肌…     

肾素血管紧张素转换酶抑制剂/受体阻滞剂对高血压伴心房颤动患者血清结缔组织和碱性成纤维细胞生长因子的影响

目的探究肾素血管紧张素转换酶抑制剂/受体阻滞剂(ACEI/ARB)治疗是否影响高血压伴心房颤动(AF)患者血清结缔组织生长因子(CTGF)、碱性成纤维细胞生长因子(bFGF)水平。方法回顾分析2010年9月至2012年2月中山大学孙逸仙纪念医院心血管内科收治的高血压病例,将高血压伴AF患者85例以及窦性心律(简称窦律)患者54例按是否接受ACEI/ARB治疗分成窦律对照组26例、治疗组28例以及AF对照组42例和治疗组43例,测定血清中CTGF、bFGF水平。结果 AF对照组血清CTGF、bFGF均显著高于窦律对照组(P均0.05);窦律对照组与治疗组间血清CTGF、bFGF差异均无统计学意义(P均0.05);AF治疗组血清CTGF、bFGF均明显低于对照组(P均0.05)。结论高血压伴AF患者血清CTGF、bFGF均升高,ACEI/ARB治疗可降低其CTGF和bFGF水平。     

血管紧张素Ⅱ受体阻滞剂和血管紧张素转换酶抑制剂有什么异同

肾素和血管紧张素系统(RAS)有2类效应类似而有区别的重要和常用药物：血管紧张素转换酶抑制剂(ACEI)和血管紧张素Ⅱ受体阻滞剂(ARB)。     

中西部城市老年急性心肌梗死院内血管紧张素转换酶抑制剂类药物应用及影响因素

目的了解中西部城市老年急性心肌梗死(AMI)患者血管紧张素转换酶抑制剂(ACEI)/血管紧张素受体拮抗剂(ARB)的使用情况及影响因素。方法选择31家协作医院符合中国AMI治疗指南Ⅰ类推荐标准的患者1886例,其中2001年218例、2006年531例和2011年1137例,将服用ACEI/ARB患者为研究组1348例,未服用ACEI/ARB者为对照组538例。分析ACEI/ARB的使用情况及影响因素。结果 2组高血压、糖尿病、心力衰竭等比较,差异有统计学意义(P0.01)。2001年、2006年和2011年患者ACEI/ARB使用率分别为74.3%、75.0%和69.3%(P=0.036)。多因素分析显示,合并高血压、糖尿病、心力衰竭、入院时收缩压≥140mm Hg(1mm Hg=0.133kPa)、未测量估算肾小球滤过率的患者更倾向使用ACEI/ARB,而女性、非前壁ST段抬高型心肌梗死、未测量LVEF、合并慢性肾功能不全的患者较少使用ACEI/ARB。结论中西部城市老年AMI患者约1/3住院期间未接受ACEI/ARB治疗,且10年间无明显改善,该类药物的应用存在较大的改善空间。     

血管紧张素转换酶抑制药/血管紧张素受体阻滞药治疗与新型冠状病毒肺炎合并高血压患者预后的相关性

目的研究血管紧张素转换酶抑制药(ACEI)/血管紧张素受体阻滞药(ARB)治疗对新型冠状病毒肺炎(新冠肺炎)合并高血压患者预后的影响。方法本研究为单中心、回顾性队列研究,纳入武汉雷神山医院2020年2月17日至3月8日期间收住入院的新冠肺炎合并高血压患者共443例,随访至2020年4月1日。分为服用ACEI/ARB组共176例,未服用ACEI/ARB组(非ACEI/ARB组)共267例。分别比较两组入院临床特征,治疗用药,研究临床结局(院内死亡为主要观察指标)的影响因素。结果 ACEI/ARB组院内死亡(RR=0.28,P=0.029),急性呼吸窘迫综合征(ARDS,RR=0.21,P=0.023),脓毒症休克(RR=0.68,P=0.011)的发生率低于非ACEI/ARB组。Logistic回归分析表明,以是否发生院内死亡为因变量,入院后服用ACEI/ARB类药物(OR=0.208,95%CI0.057～0.759,P=0.017),服用他汀类药物(OR=0.043,95%CI 0.012～0.929,P=0.043)与高血压合并新冠肺炎患者院内死亡呈负相关,而年龄≥65岁(OR=2.932,95%CI 1.048～8.026,P=0.040)、慢性心力衰竭(OR=9.439,95%CI 1.118～79.686,P=0.039)与院内死亡呈正相关。以是否发生ARDS为因变量,logistic回归分析表明,入院后服用ACEI/ARB类药物(OR=0.147,95%CI 0.031～0.688,P=0.015)与高血压合并新冠肺炎患者院内发生ARDS呈负相关,年龄≥65岁(OR=3.523,95%CI 1.120～11.080,P=0.031)、合并糖尿病(OR=3.935,95%CI 1.306～11.856,P=0.015)与发生ARDS呈正相关。以是否发生脓毒症休克为因变量,logistic回归分析表明,入院后服用ACEI/ARB类药物(OR=0.273,95%CI 0.083～0.893,P=0.032),服用他汀类药物(OR=0.094,95%CI 0.010～0.838,P=0.034)与高血压合并新冠肺炎患者院内发生脓毒症休克呈负相关,合并冠心病(OR=3.348,95%CI 1.099～10.198,P=0.034)、合并慢性心力衰竭(OR=13.005,95%CI 1.838～92.036,P=0.010)与发生脓毒症休克呈正相关。结论对于新冠肺炎合并高血压患者,新冠肺炎病程期间服用ACEI/ARB类药物可能与院内死亡及ARDS、脓毒症休克的发生呈负相关,对新冠肺炎合并高血压患者的预后并无不利作用。     

Cardiovascular and cerebrovascular outcomes in elderly hypertensive patients treated with either ARB or ACEI

Background Although angiotensin converting enzyme inhibitors (ACEI) and angiotensin receptor blockers (ARB) are equally important in the treatment of hypertension, there is less evidence whether they have equal cardiovascular and cerebrovascular protective effects, especially in elder hypertensive patients. This study aims to clarify this unresolved issue. Methods This cross-sectional study included clinical data on 933 aged male patients with hypertension who received either an ARB or ACEI for more than two months between January 2007 and May 2011. The primary outcome was the composite of cardiovascular death, non-fatal myocardial infarction, and non-fatal stroke. The secondary endpoints were unstable angina, new atrial fibrillation, and transient ischemic attack. Results The median follow-up time was 24 months. Age, drug types, cerebral infarction history, renal dysfunction history were the independent predictors of the primary endpoint. The risk of an occurrence of a primary endpoint event was higher in the ARB group than the ACEI group [P = 0.037, hazard ratios (HR): 2.124, 95% confidence interval (95% CI): 1.048–4.306]. The Kaplan-Meier method also suggests that the rate of primary endpoint occurrence was higher in the ARB group than the ACEI group (P = 0.04). In regard to the secondary endpoints, there were no significant differences between the two treatment arms (P = 0.137, HR: 1.454,95% CI: 0.888–2.380). Patient age and coronary heart disease history were independent predictors of the secondary endpoint. Conclusion ACEI were more effective than ARB in reducing cardiovascular and cerebrovascular morbidity and mortality in aged patients with hypertension.     

Effects of angiotensin-converting enzyme inhibitor and angiotensin Ⅱ receptor blocker on one-year outcomes of patients with atrial fibrillation:insights from a multicenter registry study in China

ObjectiveTo evaluate the effect of angiotensin-converting enzyme inhibitor (ACEI)/angiotensin II receptor blocker (ARB) therapy on the prognosis of patients with atrial fibrillation (AF).MethodsA total of 1, 991 AF patients from the AF registry were divided into two groups according to whether they were treated with ACEI/ARB at recruitment. Baseline characteristics were carefully collected and analyzed. Logistic regression was utilized to identify the predictors of ACEI/ARB therapy. The primary endpoint was all-cause mortality, while the secondary endpoints included cardiovascular mortality, stroke and major adverse events (MAEs) during the one-year follow-up period. Univariable and multivariable Cox regression were performed to identify the association between ACEI/ARB therapy and the one-year outcomes.ResultsIn total, 759 AF patients (38.1%) were treated with ACEI/ARB. Compared with AF patients without ACEI/ARB therapy, patients treated with ACEI/ARB tended to be older and had a higher rate of permanent AF, hypertension, diabetes mellitus, heart failure (HF), left ventricular ejection fraction (LVEF) < 40%, coronary artery disease (CAD), prior myocardial infarction (MI), left ventricular hypertrophy, tobacco use and concomitant medications (all P < 0.05). Hypertension, HF, LVEF < 40%, CAD, prior MI and tobacco use were determined to be predictors of ACEI/ARB treatment. Multivariable analysis showed that ACEI/ARB therapy was associated with a significantly lower risk of one-year all-cause mortality [hazard ratio (HR) (95% CI): 0.682 (0.527-0.882), P = 0.003], cardiovascular mortality [HR (95% CI): 0.713 (0.514-0.988), P = 0.042] and MAEs [HR (95% CI): 0.698 (0.568-0.859), P = 0.001]. The association between ACEI/ARB therapy and reduced mortality was consistent in the subgroup analysis.ConclusionsIn patients with AF, ACEI/ARB was related to significantly reduced one-year all-cause mortality, cardiovascular mortality and MAEs despite the high burden of cardiovascular comorbidities.     

年龄对非瓣膜病心房颤动患者左心房血栓的影响

目的评价年龄对非瓣膜病心房颤动(房颤)患者左心房血栓的影响。方法选择拟行导管射频消融完成经食管超声检查的房颤患者421例,根据年龄分为老年组(108例)和年轻组(313例)。根据是否存在左心房血栓又分为血栓组(26例)和无血栓组(395例)。各组间进行一般临床资料比较。结果老年组年龄、高血压、服用血管紧张素转换酶抑制剂(ACEI)/血管紧张素Ⅱ受体拮抗剂(ARB)的比例明显高于年轻组,非阵发性房颤的比例明显低于年轻组。老年组LVEF明显高于年轻组。血栓组非阵发性房颤、心力衰竭、栓塞史、服用ACEI/ARB的比例明显高于无血栓组。血栓组左心房直径明显大于无血栓组,LVEF明显低于无血栓组。logistic多因素分析显示,校正LVEF、心力衰竭、高血压、糖尿病、服用ACEI/ARB,左心房直径、非阵发性房颤、既往栓塞史是左心房血栓独立预测因素,老年不是左心房血栓独立危险因素。结论年龄不是非瓣膜病房颤患者心房血栓的预测因素。     

Angiotensin converting enzyme inhibitor and angiotensin receptor blockade use in relation to outcomes in anticoagulated patients with atrial fibrillation

BACKGROUND: The renin-angiotensin-aldosterone-system (RAAS) plays an important role in atrial fibrillation (AF). Evidence shows that blocking the RAAS with angiotensin converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) has a definite role in preventing new onset AF and in maintaining sinus rhythm in recurrent AF. Our aim was to determine if ACEI/ARB treatment was associated with clinical outcomes [stroke/systemic embolic events (SEE), mortality] in a controlled, anticoagulated AF population. METHODS: An ancillary retrospective cross-sectional and longitudinal analysis of participants in the Stroke Prevention using an ORal Thrombin Inhibitor in AF (SPORTIF) III and V trials, in relation to use (or nonuse) of ACEI/ARBs. RESULTS: Rates of stroke/SEEs, mortality or major bleeding were no different between users and nonusers in the whole cohort, or in relation to the presence/absence of hypertension, coronary artery disease and previous stroke/transient ischaemic attack, nor amongst those aged <75 years. Patients aged > or = 75 years taking ACEIs or ARBs had lower mortality (HR 0.71, 95% CI 0.52-0.95), but no significant influence on other end-points was noted. Diabetics and those with left ventricular dysfunction on ximelagatran had a higher odds ratio of abnormal liver enzyme levels. There was no apparent benefit of ACEIs or ARBs on other event rates. CONCLUSIONS: This analysis from two large randomized trials of anticoagulation has not demonstrated a significant benefit of ACEI or ARB use amongst AF patients, except amongst elderly subjects.     

卡维地络联合缬沙坦逆转高血压左心室肥厚的临床观察

目的 比较β受体阻滞剂联用血管紧张素转换酶抑制剂（ACEI）与联用血管紧张素Ⅱ受体拮抗剂对逆转高血压患者左心室肥厚的疗效.方法 临床收集高血压伴左心室肥厚患者96例,随机分为卡维地络联合咪达普利组（A组）和卡维地络联合缬沙坦（B组）,每组各48例.观察两种治疗方法对于逆转左心室肥厚的疗效.结果 两组治疗后左室舒张末内径（LVDd）、舒张期室间隔厚度（IVST）、左室后壁厚度（LVPWT）、左室射血分（LVEF）、心排出量（CO）、A峰/E峰比值（A/E比值）、左室重量指数（LVMI）均明显下降,与治疗前比较差异有统计学意义（P＜0.01）,但两组间比较差异无统计学意义（P＞0.05）.结论 卡维地络联用缬沙坦与联用咪达普利一样能显著逆转原发性高血压伴左室肥厚,并能改善预后.     

心可舒片联合ARB类降压药治疗高血压性心脏病致心律失常疗效观察

目的 探讨心可舒片联合血管紧张素Ⅱ受体拮抗剂(ARB)类降压药治疗高血压心脏病致心律失常的疗效.方法 回顾总结门诊就诊的高血压心脏病患者167例,随机分为两组.治疗组83例,给予心可舒片及ARB类降压药;对照组84例,给予空白胶囊及ARB类降压药.观察患者治疗3个月和1年后血压、心律失常情况.结果 治疗3个月后,两组患者血压控制良好,并且两组之间无统计学意义,而心房纤颤、房性早搏、室性早搏等心律失常经治疗3个月后,治疗组有效率明显优于对照组,差异有统计学意义(P<0.05).结论 心可舒片联合ARB类降压药,不仅可以有效控制患者血压水平,而且能够有效改善高血压心脏病所导致的房性早搏、室性早搏、心房纤颤等心律失常.     

Prevention of atrial fibrillation with angiotensin-converting enzyme inhibitors and angiotensin receptor blockers: a meta-analysis

OBJECTIVES: This study was designed to identify all randomized clinical trial data evaluating angiotensin-converting enzyme inhibitors or angiotensin receptor blockers for the prevention of atrial fibrillation (AF), to estimate the magnitude of this effect and to identify patient subgroups most likely to benefit. BACKGROUND: Angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) reduce morbidity and mortality in patients with heart failure, vascular disease, and hypertension. Several reports suggest that they may also prevent the development of AF. METHODS: A systematic review of the literature was performed to identify all reports of the effect of ACEIs or ARBs on the development of AF. Eligible studies had to be randomized, controlled, parallel-design human trials of an ACEI or ARB that collected data on the development of AF. RESULTS: A total of 11 studies, which included 56,308 patients, were identified: 4 in heart failure, 3 in hypertension, 2 in patients following cardioversion for AF, and 2 in patients following myocardial infarction. Overall, ACEIs and ARBs reduced the relative risk of AF by 28% (95% confidence interval [CI] 15% to 40%, p = 0.0002). Reduction in AF was similar between the two classes of drugs (ACEI: 28%, p = 0.01; ARB: 29%, p = 0.00002) and was greatest in patients with heart failure (relative risk reduction [RRR] = 44%, p = 0.007). Overall, there was no significant reduction in AF in patients with hypertension (RRR = 12%, p = 0.4), although one trial found a significant 29% reduction in patients with left ventricular (LV) hypertrophy. In patients following cardioversion, there appears to be a large effect (48% RRR), but the confidence limits are wide (95% CI 21% to 65%). CONCLUSIONS: Both ACEIs and ARBs appear to be effective in the prevention of AF. This benefit appears to be limited to patients with systolic left ventricular dysfunction or LV hypertrophy. The use of these drugs following cardioversion appears promising but requires further study.     

Inhibition of angiotensin II signaling and recurrence of atrial fibrillation in AFFIRM

OBJECTIVES: We investigated whether inhibition of endogenous angiotensin II signaling reduces the recurrence rate of atrial fibrillation (AF) in patients enrolled in the Atrial Fibrillation Follow-up Investigation of Rhythm Management (AFFIRM) study. BACKGROUND: Structural and electrical remodeling contribute to AF. Previous experimental studies have implicated the angiotensin II signaling pathway in this process, and recent clinical evidence supports a beneficial effect of inhibiting angiotensin II activity. METHODS: Using the AFFIRM database, we retrospectively identified a cohort of patients randomized to the rhythm-control arm who were in sinus rhythm. Exposure to angiotensin II receptor blockers or angiotensin-converting enzyme inhibitors (ANGI) was determined, and the time to first recurrence of AF was compared between ANGI users and nonusers. RESULTS: The study cohort included 732 patients not taking ANGI through the initial 2-month follow-up and 421 patients taking ANGI during this time. Patients in the ANGI group more likely had hypertension, diabetes, coronary artery disease, and congestive heart failure compared to patients not taking ANGI. Risk of AF recurrence in the ANGI treatment group did not differ from the risk observed in patients not taking the drugs (hazard ratio [HR] = 0.91, 95% confidence interval [CI] = 0.77-1.09). However, in patients with congestive heart failure or impaired left ventricular function, ANGI use was associated with a lower risk of AF recurrence. CONCLUSIONS: This analysis provides evidence that ANGI use may be beneficial in some patient subgroups with AF and underscores the need for randomized clinical trials defining more fully the role of angiotensin II inhibition in treating AF.     

Prolonged QRS duration and severity of mitral regurgitation are unfavorable prognostic markers of heart failure in patients with nonischemic dilated cardiomyopathy.

BACKGROUND: The goal of the present study was to identify predictors of event-free survival in nonischemic dilated cardiomyopathy (NIDCM) patients after administration of angiotensin-converting enzyme inhibitors (ACEI)/angiotensin receptor blockers (ARB) and beta-blockers. METHODS AND RESULTS: The study group comprised 78 consecutive patients with NIDCM between 1997 and 2002. NIDCM was defined as ejection fraction (EF) <0.40 and left ventricular end-diastolic diameter (LVEDD) >55 mm on echocardiography and normal coronary angiography. The mean EF and LVEDD was 26.3 +/- 10.5%, and 62.9 +/- 7.1 mm, respectively. Patients were treated with optimal medical therapy including ACEI/ARBs and/or beta-blockers and followed up for 35.6 +/- 27.8 months. The primary endpoint was either cardiac death or hospitalization because of deterioration of heart failure. Cox's regression analysis was used to establish the association of age, sex, EF, LVEDD, left atrial diameter, cardiac index, pulmonary capillary wedge pressure, QRS duration, severity of mitral regurgitation, body mass index, New York Heart Association class and the presence of atrial fibrillation with these events. During follow-up, 23 patients reached the primary endpoint. In a multivariate analysis, EF (chi-square 5.74, p=0.0166), severity of mitral regurgitation (chi-square 12.31, p=0.0004), and QRS duration (chi-square 11.20, p=0.0008) remained significant predictors. CONCLUSION: In NIDCM patients, prolonged QRS duration is a high risk factor for remodeling and unfavorable events. The severity of mitral regurgitation was also a strong risk predictor.     

缬沙坦、苯那普利及合用时对心肌梗死后心室重构影响的比较

目的　对比血管紧张素转化酶抑制剂 ( ACEI)、选择性 型血管紧张素 受体拮抗剂 ( ARB)以及合用时对心肌梗死 ( MI)后心室重构的影响 ,并初步探讨其作用机制。方法　冠状动脉左前降支结扎后 2 4小时的 SD大鼠被随机分至 B组 (苯那普利 2 m g/ kg/ d)、V组 (缬沙坦 15 mg/ kg/ d)、B+ V组 (苯那普利 1mg/ kg/ d+缬沙坦 7.5 mg/ kg/d)和 C组 (空白对照组 ) ,假手术组 ( S组 )作为正常对照。治疗 6周后测量体重、心脏重量、非梗死心肌胶原含量 ,以及血管紧张素转化酶 ( ACE)、血管紧张素 ( Ang )、醛固酮 ( Ald)的活性或含量。结果　 MI后 6周左心室 ( L V)、右心室 ( RV)重量以及右心室与左心室重量比、心肌胶原含量显著增加 ( C组比 S组 ,P<0 .0 5 ) ,苯那普利、缬沙坦及合用均显著降低以上指标 (与 C组比较 ,均 P<0 .0 5 )。 C组心脏局部 Ang 、ACE和 Ald较 S组明显升高 ( P<0 .0 1) ,三种治疗组均使其显著降低并恢复至正常 (与 C组比较 ,均 P<0 .0 1;与 S组比较 ,均 P>0 .0 5 )。结论　 l.心脏局部肾素 -血管紧张素系统 ( RAS)在左心室重构中发挥重要的作用。2 .ACEI、ARB均有减轻 MI后左心室重构方面的作用。 3 .合用 ACEI与 ARB具有良好的叠加作用