Evaluation of early monitoring of cardiotoxicity induced by anthracyclines

XU Xin-Yi; HUANG Mei-Rong; TANG Jing-Yan; ZHANG Yu-Qi; WU Yu-Rong; ZHOU Min

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Chinese Journal of Contemporary Pediatrics ›› 2011, Vol. 13 ›› Issue (6) : 490-494.

CLINICAL RESEARCH

Evaluation of early monitoring of cardiotoxicity induced by anthracyclines

XU Xin-Yi, HUANG Mei-Rong, TANG Jing-Yan, ZHANG Yu-Qi, WU Yu-Rong, ZHOU Min

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Abstract

OBJECTIVE: Anthracyclines (ANT) are effective for leukemia and solid tumors. However the long-term life quality of patients is seriously affected by ANT-related cardiotoxicity. The aim of this study was to evaluate the value of two dimension echocardiography (2DE) and serum biochemical indicators in monitoring ANT-related cardiotoxicity. METHODS: Seventy children who received ANT chemotherapy (ANT dose: 124±73 mg/m2) and were followed up for 22±13 months were enrolled. 2DE with aspects of conventional indexes (left ventricular diameter and wall thickness, ejection fraction, E/A), myocardial performance index (MPI) and tissue Doppler imaging (TDI) were performed. Serum levels of troponin (CTnI) and brain natriuretic peptide (BNP) were measured. Thirty-seven healthy children served as the control group. RESULTS: There were no significant differences in conventional indexes of 2DE between the ANT and the control groups. The MPI of left and right ventricular in the ANT group increased significantly compared with that in the control group (0.237±0.06 vs 0.203±0.06, 0.171±0.05 vs 0.140±0.04 respectively; P<0.01). TDI showed the late diastolic peak velocity in the basal and middle sections of left ventricular, interventricular septum and right ventricular in the ANT group were significantly higher than the controls. There were significant differences in the ratio of early to late diastolic peak velocity of the middle section of left ventricular and the basal and middle sections of the interventricular septum between the two groups (P<0.05). The changes of MPI and TDI became more obvious with the increased dose of ANT. There were no significant differences in serum CtnI and BNP levels between the two groups. CONCLUSIONS: The heart function of patients who received ANT chemotherapy needs to be monitored for a long term. MPI and TDI can be used as early indexes for monitoring the heart function.

Key words

Anthracycline / Cardiotoxicity / Echocardiography / Troponin / Brain natriuretic peptide / Child

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XU Xin-Yi, HUANG Mei-Rong, TANG Jing-Yan, ZHANG Yu-Qi, WU Yu-Rong, ZHOU Min. Evaluation of early monitoring of cardiotoxicity induced by anthracyclines[J]. Chinese Journal of Contemporary Pediatrics. 2011, 13(6): 490-494

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