二维和三维斑点追踪技术评价蒽环类药物对乳腺癌患者心脏毒性的对比研究

摘要

Objective To assess the toxicity of anthracyclinc to left ventricle function in patients withbreast cancer,and to compare the clinical values between two-dimensional speckle tracking echocardiography (2D-STE) and 3D-STE.Methods 50 patients with breast cancer who had received surgical treatment and epirubicinbased chemotherapy were recruited to study groups.All the patients had undergone up to 6 cycles of chemotherapy.Different stages wcre identified according to accumulated doses of epirubicin reaching 0 mg/m2,120 mg/m2,240 mg/m2 and 360 mg/m2.2D-STE and 3D-STE parameters were measured before chemotherapy and after different stage of chemotherapy.The receiver operating characteristics curves (ROC) of parameters (2D-GLS,3D-GLS,3D-GCS,3DGAS) were graphed to evaluate the specificity and sensitivity of detecting dysfunction of the left ventricles.25 healthy volunteers were recruited to a control group.Results As compared with the control group and the baselines,2D-GLS and 3D-GCS was significantly declined (P ＜ 0.05),3D-GAS and 3D-GLS were significantly lowered after interim period and later period (P ＜ 0.05),while 3D-GRS was not changed significantly during the whole chemotherapy period.The ROC curves revealed the sensitivity of 2D-GLS,3D-GCS,3D-GLS and 3D-GAS for assessing dysfunction of the left ventricles was 60.7％,65.3％,62.7％,and 80.7％,while the specificity was 50.0％,54.0％,64.0％,and 82.0％,respectively.Conclusions As compared with 2D-STE,3D-STE can detect the dysfunction of left ventricles earlier and more accurately.Furthermore,the specificity and sensitivity of 3D-GAS are the highest among all parameters in detecting the early dysfunction of left ventricles.%目的:应用二维及三维斑点追踪成像(2D-STE、3D-STE)技术评估蒽环类药物对乳腺癌患者左心室功能的毒性作用,比较两种技术的临床应用价值.方法:50例乳腺癌术后的患者,均采用以表柔比星为主的化疗方案,共化疗6个周期.根据表柔比星累计剂量达0、120、240、360 mg/m2分为不同化疗阶段(即化疗前、化疗初期、化疗中期、化疗后期).分别于不同化疗阶段行2D-STE和3D-STE的监测.绘制ROC曲线以评价2D-GLS、3D-GLS、3D-GCS及3D-GAS检测左室功能早期损害的敏感度及特异度.25例健康女性志愿者组成对照组.结果:相比对照组和化疗前,2D-GLS和3D-GCS于化疗后期明显降低(P＜0.05),3D-GAS、3D-GLS在化疗中期及化疗后期均明显减低(P＜0.05),而3D-GRS在整个化疗阶段无明显降低.ROC曲线表明2D-GLS、3D-GCS、3D-GLS、3D-GAS判断蒽环类药物对左室功能损害的敏感度分别为60.7％、65.3％、62.7％、80.7％,特异度分别为50.0％、54.0％、64.0％、82.0％.结论:与2D-STE比较,3D-STE更具有优势,能够更早、更准确的发现蒽环类药物所致的左心室功能损害,且3D-GAS检测左心室功能早期损害的敏感度和特异度最高.