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:: Volume 4, Number 3 (9-2014) ::
Iran J Ped Hematol Oncol 2014, 4(3): 103-108 Back to browse issues page
Heart repolarization changes after anthracycline therapy in the children with cancer
Dr H Amoozgar, Dr S Zareifar , Dr M Borzoie, Dr F Qasem
Abstract:   (1122 Views)
Background Anthracyclines are important components of many chemotherapeutic protocols. The present study aimed to evaluate the repolarization changes in electrocardiography (ECG) which may predict drug induced arrhythmia. Materials and Methods In this cross-sectional study, the recorded ECGs were assessed for QT dispersion (QTd), QT corrected dispersion (QTcd), T peak to Tend dispersion (TPed), and P dispersion (Pd) in 12 ECG leads. The demographic information, including sex, age, and duration of drug consumption, were recorded, as well. Results In this study, 112 patients, including 58 females (52%) and 54 males (48%) with the mean age of 8.7±4.5 years, as the case group were compared with 43 children, including 17 males (40%) and 26 females (60%), in the control group. Most of our patients (88%) had received usual doses of anthracyclines i.e., 330 mg/m2. QT dispersion of the patients and the controls was 0.054±0.02 and 0.05± 0.02 seconds, respectively. No significant difference was found between the patients and the controls regarding corrected QT dispersion (P> 0.05). However, P dispersion time had increased in the patients' group. Our study showed that the duration of anthracyclines therapy did not cause any significant increase in ventricular re-polarization parameters. Conclusion Anthracyclines may show their cardiac toxicity through increasing P dispersion.
Keywords: Anthracyclines, QT dispersion, corrected QT dispersion, P dispersion
Full-Text [PDF 220 kb]   (491 Downloads)    
Type of Study: Research | Subject: Special
Received: 2014/09/11 | Accepted: 2014/09/11 | Published: 2014/09/11
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Amoozgar H, Zareifar S, Borzoie M, Qasem F. Heart repolarization changes after anthracycline therapy in the children with cancer. Iran J Ped Hematol Oncol. 2014; 4 (3) :103-108
URL: http://ijpho.ssu.ac.ir/article-1-172-en.html
Volume 4, Number 3 (9-2014) Back to browse issues page
Iranian Journal of Pediatric Hematology and Oncology
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