CAJ | 학술논문

目的探讨应变率显像(SRI)技术在评价冠心病患者冠状动脉旁路移植术前后左心室局部功能变化中的应用价值.方法对16例冠心病患者分别于冠状动脉旁路移植术前3 d、术后12 d及3个月行超声心动图检查,应用SRI技术对左室各壁基底段和中间段的局部心肌功能进行定量分析,共分析192个节段.根据术前二维超声心动图室壁运动情况将心肌节段分为运动正常组(152个节段)和运动异常组(40个节段).结果术前运动正常组收缩期心肌峰值应变率(SRs)和舒张早期心肌峰值应变率(SRe)与运动异常组相比差异无统计学意义(P>0.05).运动异常组术后3个月的房缩期心肌峰值应变率(SRa)较术前3 d增高(P<0.05).运动正常组术后3个月与术前3 d相比,SRs、SRa及SRe均增高(分别P<0.05和0.01),术后3个月与术后12 d相比,SRs增高(P<0.05).结论应用SRI技术能定量评价冠状动脉旁路移植术前后左室局部心肌功能的改变.
목적 탐토응변솔현상(SRI)기술재평개관심병환자관상동맥방로이식술전후좌심실국부공능변화중적응용개치.방법 대16례관심병환자분별우관상동맥방로이식술전3 d、술후12 d급3개월행초성심동도검사,응용SRI기술대좌실각벽기저단화중간단적국부심기공능진행정량분석,공분석192개절단.근거술전이유초성심동도실벽운동정황장심기절단분위운동정상조(152개절단)화운동이상조(40개절단).결과 술전운동정상조수축기심기봉치응변솔(SRs)화서장조기심기봉치응변솔(SRe)여운동이상조상비차이무통계학의의(P>0.05).운동이상조술후3개월적방축기심기봉치응변솔(SRa)교술전3 d증고(P<0.05).운동정상조술후3개월여술전3 d상비,SRs、SRa급SRe균증고(분별P<0.05화0.01),술후3개월여술후12 d상비,SRs증고(P<0.05).결론 응용SRI기술능정량평개관상동맥방로이식술전후좌실국부심기공능적개변.
Objective To investigate the value of strain rate imaging(SRI) in estimating the changes of left ventricular regional myocardial function in patients with coronary artery disease before and after coronary artery bypass grafting operation. Methods In sixteen patients with coronary artery disease, echoeardiography was performed 3 days before, 12 days after and 3 months after coronary artery bypass grafting operation respectively. SRI was used to quantitatively analyze the regional myocardial function of left ventricular wall. One hundred and ninety-two segments of left ventricular myocardium were analyzed in the study. The left ventricular myocardium was divided into segments with normal(152 segments) and abnormal(40 segments) wall motion according to two-dimensional echocardiography before the operation. Results Peak strain rate during systolic and early diastolic contraction (SRs, SRe) was not statistically significant between segments with normal and abnormal wall motion before operation. In segments with abnormal wall motion,myocardial peak strain rate of atrial contraction (SRa) was increased three months after operation comparing with three days before operation (P<0.05). In segments with normal wall motion,the absolute values of SRs,SRa and SRe were increased three months after operation comparing with three days before operation (P<0.05 and 0.01 ). SRs was increased three months after operation comparing with 12 days after operation (P<0.05 ). Conclusions SRI can be used to evaluate the functional changes of left ventricular regional myocardium quantitatively after coronary artery bypass grafting operation.