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慢性肾功能衰竭血液透析患者心脏瓣膜病变(PDF)

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

期数:
2001年第1期
页码:
11-12,15
栏目:
论著
出版日期:
2001-01-25

文章信息/Info

Title:
Valve disorders in patients with chronic renal failure on maintenance hemodialysis
作者:
崔 杰1 王汉民2 唐 军1 汤伯基1
第三军医大学新桥医院全军心血管内科中心,重庆 400037
Author(s):
CUI Jie1WANG Han-min 2TANG Jun1 TANG Bo-ji1
Department of Nephology,Shanghai Corps Hospital,Chinese People s Armed Police.Shanghai 2Ol103,Chin
关键词:
血管紧张素(1-7)高血压压力超负荷肾素-血管紧张素-醛固酮系统心功能
Keywords:
rena1 failurechronichemodialysiscardiac valvecalcification
分类号:
R542.5
DOI:
-
文献标识码:
A
摘要:
目的 探讨血管紧张素(1-7)[Ang(1-7)]对单纯压力负荷增加及肾素-血管紧张素-醛固酮系统(RAAS)激活的高血压模型左右心室收缩及舒张功能的影响及其机制。方法 建立肾下主动脉缩窄(INAC)及二肾一夹(2K1C)模型,应用微渗泵植入技术,使Ang(1-7)进行不同时间(14及28 d)的体内干预,采用经颈动脉插入心导管法检测这两种高血压模型左室和右室收缩及舒张功能。结果 在2K1C动物模型,建模同时及术后14 d应用Ang(1-7),均可有效降低血压,平均下降15%~20%(P<0.05)。在INAC动物模型,建模同时应用Ang(1-7),在术后第14天时血压下降13.6%(P<0.05);术后14 d开始应用Ang(1-7),血压下降7.9%。在2K1C模型,14 d时其左室收缩功能无明显变化,但其舒张功能则已受损,Ang(1-7)可使其显著改善(-dp/dtmax,P<0.05);术后42 d,2K1C组的收缩与舒张功能均明显受损;Ang(1-7)可使其收缩功能显著改善(+dp/dtmax,P<0.05),但对其舒张功能则改善不明显(-dp/dtmax,LVDEP)。在2K1C模型的右室,14 d时收缩及舒张功能均已受损,Ang(1-7)可使其显著改善[2K1C组比Ang(1-7)组,+dp/dtmax,-dp/dtmax,P<0.05];术后第42天,右室的收缩与舒张功能受损更为明显,Ang(1-7)使其收缩功能显著改善(+dp/dtmax,P<0.05),对其舒张功能则改善不明显(-dp/dtmax)。在INAC动物模型,14 d时其左室收缩和舒张功能均无明显变化;42 d时,其舒张功能有所降低(-dp/dtmax,P<0.05),Ang(1-7)可使其明显改善(-dp/dtmax,P<0.05)。14及42 d时,其右室收缩与舒张功能均无明显变化,Ang(1-7)对其亦无明显影响。结论 Ang(1-7)可改善高血压模型左室和右室收缩及舒张功能。但对两种模型的改善程度不同,且与其降压效果不同步,提示Ang(1-7)对心功能的改善可能具有多种作用机制。
Abstract:
AIM To investigate the aetiologies and characteristics of valve disorders and effects on cardiac structure and function in patients with chronic renaI failure (CRF) on maintenance hemodialysis. METH0DS The calclficatlon,surface area,stenosis and insufficiency of cardiac valve were measured by colour Dopper ech0cardi0graphic.RESULTS Among 64 cases with CRF,the echocardiographic findings were mitral valve calcification (M AC)in 9 cases,mitral regurgita—tion (M R)in 5 cases,mitra1 stenosis(MS)in 2 cases,aortic valve calcification in 12 cases.aortic regurgitation in 7 cases,combined mitral and aortic valves cacification in 5 cases.respectively.CONCLUSION MitraI and aortic valves were vulnerable tO calcification which was the major change of heart valve in patients with CRF on maintenance hemodialysls,the degree of calcificatlon was closely related to hyperph。sph。remia,secondary hyperparathyroidism and a longer period of hemodialysis.

参考文献/References

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[2]Maher ER,Young G.Smith WB,et al.Aortic and mitral valve caldfieatlion in patients with end stage renal disease[J].Lancet ,1987.2(8564):875.

[3]戴月梅,吉建荣.老年遇行性心瓣膜病26倒临床分析[J].中国现代医学杂志,1999,9(5):l6.

[4]Malergue MC,Urena P,Prieur P,et al.Incidence and development of aortic stenosis in chronic hemodlalysis.An ultrasonographic and blologieal study of 112 patients[J].Arch Mal Coeur Vaiss,1998,90(I2):1595.

[5]Eugene Braunwald.慢性肾功盹衰竭心脏瓣膜瘸变和心血管系统钙化[A].陈灏珠主译.心脏病学[M].北京:人民军医出版杜,1999.17l0-l752.

备注/Memo

备注/Memo:
收稿日期:2000-03-21.
更新日期/Last Update: 2001-01-25