CAJ | 학술논문

目的探讨二维斑点追踪技术在评价右心室功能中的价值及急性下壁心肌梗死患者在经皮冠状动脉介入治疗(PCI)术后7d右心室功能的改善状况.方法 44例急性下壁心肌梗死患者共进行74次超声检查,50例正常人作为对照.记录心尖四腔切面的二维图像,应用超声斑点追踪技术测量右心室游离壁及右室间隔基底段、中间段、心尖段二维应变、应变率.结果急性下壁心肌梗死患者右心室游离壁基底段、中间段及右室间隔各段心肌应变均降低(P＜0.05),PCI术后7d除心尖两个节段外余节段的应变值均有明显改善(P＜0.05)；应变率仅在梗死后右室间隔中间段出现明显降低(P＜0.05).结论二维斑点追踪技术在急性下壁心肌梗死患者多个节段的应变值均下降时,提示右心室收缩功能下降,且急诊PCI术能改善急性下壁心肌梗死患者的右心室功能.
목적 탐토이유반점추종기술재평개우심실공능중적개치급급성하벽심기경사환자재경피관상동맥개입치료(PCI)술후7d우심실공능적개선상황.방법 44례급성하벽심기경사환자공진행74차초성검사,50례정상인작위대조.기록심첨사강절면적이유도상,응용초성반점추종기술측량우심실유리벽급우실간격기저단、중간단、심첨단이유응변、응변솔.결과 급성하벽심기경사환자우심실유리벽기저단、중간단급우실간격각단심기응변균강저(P＜0.05),PCI술후7d제심첨량개절단외여절단적응변치균유명현개선(P＜0.05)；응변솔부재경사후우실간격중간단출현명현강저(P＜0.05).결론 이유반점추종기술재급성하벽심기경사환자다개절단적응변치균하강시,제시우심실수축공능하강,차급진PCI술능개선급성하벽심기경사환자적우심실공능.
Objective To evaluate the usefulness of speckle tracking imaging(STI) for assessment of systemic right ventricle (RV) function in patients with acute inferior myocardial infarction(MI) and the changes 7 days after percutaneous coronary interventions(PCI).Methods Two-dimensional imaging at the four chamber view was obtained with tracing of the entire RV endocardial border in 44 patients with acute inferior MI and 50 healthy volunteers.Peak longitudinal systolic strain and strain rate (S,SR)in six RV segment included the basal,mid,and apical segments of the RV free wall and septum.And thirty patients reexamined 7 days after PCI.Results The S values in the base and mid segmental of RV free wall and all segments of right septum were significantly lower in patients with acute inferior MI( P ＜0.05).But the SR values only decreased in mid segment of right septum.Except the apical parts of RV free wall and right septum,the S values of others segmental were significantly improved( P ＜0.05) 7 days after PCI.But the SR values had no changes( P ＞0.05).Conclusions STI is a new and useful technology for assessment of RV function in acute inferior MI and the RV function can be improved by emergency PCI.