摘要
目的 探讨心磁图对老年冠心病患者的诊断及介入治疗后的随访价值.方法 应用德国SQUID7通道非屏蔽心磁图仪,因胸闷入院进行冠状动脉造影的老年患者90例,分为对照组（44例,冠状动脉病变＜50%）和冠心病组（46例,至少1支冠状动脉病变≥70%）.冠心病组患者31例按时完成3次检测.选择心脏复极过程,以每12ms为间隔作出S-T间期的电流密度分布图,以每幅图分级的平均数（ACTM）、异常电流分布图占所有电流密度分布图的比率（RAM）作为判断标准.结果 冠心病组ACTM（3.04±0.64 vs 2.72±0.82,P＜0.05）和RAM[（65.28±31.50）% vs （50.84±36.26）%,P＜0.05]明显高于对照组.支架治疗后24～72 h ACTM、RAM较介入治疗前有所改善,但差异无显著性意义;介入治疗后1个月ACTM、RAM改善明显,差异有显著性意义.结论 心磁图是一种无创性的、敏感性较高的筛选冠心病的新方法.同时是一种随访治疗效果和预后的简易方法.
Objective To analyse changes of magnetocardiogram （MCG） after PTCA in old patients with coronary artery di.sease. Methods MCG was performed in 90 old patients with chest pain. Forty-four of them had coronary artery stenosis〈50% （control group） and 46 had coronary artery stenosis≥70% （coronary artery disease group） before and one week and one month after PTCA. MCG recording for 3 times in 31/46 patients was performed on time. The maps of magnetic field distribution were plotted in course of ST-T interval with 12 ms steps on the bases of two-dimensional interpolation algorithm. Two quantitative indicators were analyzed .average classification of total maps（ACTM）,ratio of abnormal maps（RAM）. Results ACTM and RAM were much higher in CAD group than in control group [3.04±0.64 vs 2.72±0.82, P G0.05% （65.28±31.50） % vs （50.84±36.26）%, P 〈0.05]. ACTM and RAM in 24 72 h after PTCA were lower than those before PTCA but no significant difference（ P 〉0.05） and were much lower one month after PTCA than before PTCA[RAM（52.65±30.16）% vs （71.58±27.10）G, P 〈 0.05]. Conclusion MCG might be a new screening method for diagnosis of coronary artery disease and a noninvasive method for evaluation of cardiac ischemic degree of patients.
出处
《中华老年心脑血管病杂志》
CAS
北大核心
2007年第8期535-537,共3页
Chinese Journal of Geriatric Heart,Brain and Vessel Diseases
基金
保健专项科研课题(沪A045)
关键词
冠状动脉疾病
支架
心磁图描记术
诊断
随访研究
coronary disease
stents
magnetocardiography
diagnosis
follow-up studies
