V＿4R－V＿6R和V＿7－V＿9导联心电图诊断心肌梗死的探讨  

Assessment of the V_4R-V_6R and V_7-V_9 Leads ECG inthe Diagnosis of Myocardial Infarction

作　　者：闻颖梅[1] 王小寅[1] 徐宏玲[1] 陆为武 陈馨[1] 刘伟[1] 刘纳维 方期定[1] 

机构地区：[1]中日友好医院

出　　处：《临床心电学杂志》1994年第2期49-54,共6页Journal of Clinical Electrocardiology

摘　　要：１５０名正常人和２６２例不同部位心肌梗死（ＭＩ）作８４导心电标测图。发现：１．正常人Ｑ图分布在右背及右前胸上部，Ｑ电位自右上胸前、后向周边递减。故Ｖ＿４Ｒ、Ｖ＿５Ｒ和Ｖ＿６Ｒ导联可有ｑ或ＱＳ波，各导正常Ｑ波上限为０．０５、０．１４与０．２３ｍＶ。Ｖ＿７、Ｖ＿９较近Ｑ图中心。正常上限各为０．１３与０．１７ｍＶ。２．２６２例ＭＩ中２５８例出现异常Ｑ图；即Ｑ图中心的分布超出生理范围。在异常Ｑ波邻近的导联。Ｑ波递变规律也随之紊乱，故加作Ｖ＿３Ｒ－Ｖ６＿Ｒ或Ｖ＿７－Ｖ＿９的周围导联，观察Ｑ波的递变规律，可有助于ＭＩ的诊断。The potentials and distribution of the Q Waves of 150 normal individuals and262 cases of myocardial infarction (MI) of various location were examined and analyzed by 84leads ( 7 X 1 2) ECG mapping. The results showed that 1. In the normal the Q map is distributedover the right upper chest both anteriorly and posteriorly , with a deepest negative potential centeroccurred at high right upper chest and decreasing toward its lower periphery, so it makes the ap-pearance of Q or QS in V4R , V5R and V6R. The amplitudes of Q waves of V4R , V5R and V6R arenormally less than 0. 05 , 0. 14 and 0. 23 mv respectively. The Q waves of V7 , V9 are more clos-ing to the Q center, their upper limits are 0. 13 and 0. 17 respectively. 2. In 258 out of 262 MIcases , abnormal Q maps were demonstrated , i. e. a Q map with its highest potential center locat-ed out of the normal range and consequently the normal trend of potential degradation is also de-teriorated. Therefore, it may be helpful in the diagnosis of MI by adding, if necessary, theneighbor leads of V3R-V6R or V7-V9 to examine the potential degradation of Q waves.

关 键 词：电位测定法 心电图 心肌梗塞 

分 类 号：R542.220.4[医药卫生—心血管疾病]