CAJ | 학술논문

目的采用超声二维应变成像检测局部心肌功能,准确评价冠状动脉病变.方法 67例可疑冠心病患者进行冠状动脉造影,并将患者分为两组:病例组42例,冠状动脉狭窄≥70%;对照组25例,冠状动脉狭窄＜50%.在冠状动脉造影前24小时进行超声二维应变成像,比较两组左心室心肌峰值纵向收缩期应变(Ss)和应变率(SRs)、舒张早期应变率(SRe)、舒张晚期应变率(SRa)、SRe/SRa,及达SRe时间(T-SRe).结果病例组狭窄≥70%冠状动脉所支配心肌的Ss、SRs、SRe和SRe/SRa均小于对照组心肌(P＜0.001).SRs和SRe是冠状动脉狭窄≥70%的独立预测因子,且SRe ＜0.91预测冠状动脉狭窄≥70%的灵敏性为72.46%,特异性为89.65%.结论二维应变成像可通过检测心肌舒张功能准确诊断冠状动脉病变.
목적 채용초성이유응변성상검측국부심기공능,준학평개관상동맥병변.방법 67례가의관심병환자진행관상동맥조영,병장환자분위량조:병례조42례,관상동맥협착≥70%;대조조25례,관상동맥협착＜50%.재관상동맥조영전24소시진행초성이유응변성상,비교량조좌심실심기봉치종향수축기응변(Ss)화응변솔(SRs)、서장조기응변솔(SRe)、서장만기응변솔(SRa)、SRe/SRa,급체SRe시간(T-SRe).결과 병례조협착≥70%관상동맥소지배심기적Ss、SRs、SRe화SRe/SRa균소우대조조심기(P＜0.001).SRs화SRe시관상동맥협착≥70%적독립예측인자,차SRe ＜0.91예측관상동맥협착≥70%적령민성위72.46%,특이성위89.65%.결론 이유응변성상가통과검측심기서장공능준학진단관상동맥병변.
Objective To evaluate the coronary lesions with two-dimensional strain echocardiography. Methods Sixty-seven patients with suspected coronary heart diseases who underwent coronary angiography were divided into two groups. Forty-two of them with coronary stenosis ≥70% were considered as patient group, and the other 25 with coronary stenosis ＜50% were regarded as control group. Two-dimensional strain was performed in all patients within 24 h before coronary angiography. Longitudinal systolic strain rate (SRs), early (SRe) and late (SRa) diastolic strain rate, systolic strain (Ss), and time to SRe (T-SRe) were measured and compared. Results Ss, SRs, SRe and SRe/SRa decreased significantly in regions controlled by coronary artery with ≥70% stenosis in patient group compared with those controlled by coronary artery with ＜50% stenosis in control group. SRs and SRe were the independent predictive factors of coronary stenosis ≥70%, and the sensitivity and specificity of SRe ＜0.91 to identify coronary stenosis ≥70% was 72.46% and 89.65%, respectively. Conclusion Two-dimensional strain echocardiography may accurately evaluate the coronary lesions by detecting regional myocardial diastolic function.