Objective:To explore the clinical significance of ultrasonic myocardial work index in evaluating cancer therapy-related cardiac dysfunction(CTRCD)after breast cancer chemotherapy.Methods:A total of 45 women with human epidermal growth factor receptor 2(HER2)+ breast cancer who received anthracycline sequential therapy participated in Nanjing Lishui District People's Hospital from January 2021 to June 2022 were selected,including 33 patients with non-CTRCD and 12 patients with CTRCD.All patients were examined by two-dimensional transthoracic echocardiography and two-dimensional speckle tracking imaging(STI)before starting anthracycline therapy(T0),after 2 cycles of anthracycline chemotherapy(T1),after 4 cycles(T2)and at the end of the whole chemotherapy cycle(T3).Results:In patients without CTRCD,the trajectories of GLS,GWI and GCW were significantly different(P<0.001,0.017 and 0.006,respectively).During the whole chemotherapy period,GLS,GWI and GCW of patients with CTRCD decreased in a time-dependent manner(P<0.05),and reached the lowest level at T3.Multivariate analysis showed that GLS[OR(95%CI)=1.94(1.02-3.69),P=0.044]and GWI[OR(95%CI)=1.78(1.05-3.03),P=0.032]was independently related to CTRCD.The area under curve(AUC)of GLS and GWI in T1 as independent predictors of CTRCD were 0.749(95%CI 0.550-0.948)and 0.837(95%CI 0.675-0.998),respectively.When GLS and GWI were combined in T1 phase,the AUC of diagnosing CTRCD increased to 0.942(95%CI 0.878-1.000),and the sensitivity and specificity were 74.7%and 92.1%respectively.Conclusion:Left ventricular GLS and GWI can be used as independent predictors of anthracycline-induced CTRCD.
关键词
乳腺癌/超声/心肌做功指数/化疗/心脏功能障碍
Key words
Breast cancer/Ultrasound/Myocardial work index/Chemotherapy/Cardiac dysfunction