Anthracycline Treatment and Left Atrial Function in Children: A Real-Time 3-Dimensional Echocardiographic Study

Area of Science:

• Pediatric Cardiology
• Cardiotoxicity Research
• Oncology Supportive Care

Background:

• Anthracycline (AC) chemotherapy is a cornerstone treatment for many pediatric cancers.
• AC therapy is known to cause left ventricular (LV) dysfunction, a significant concern for long-term survivors.
• Limited data exists on the specific effects of AC on left atrial (LA) size and function in pediatric populations.

Purpose of the Study:

• To investigate potential abnormalities in LA size and function in children following AC chemotherapy.
• To determine if AC exposure is associated with early signs of cardiotoxicity affecting the left atrium.
• To explore the utility of LA parameters as prognostic markers for AC-induced cardiotoxicity.

Main Methods:

• Retrospective review of pediatric cancer patients treated with AC versus a control group.
• Real-time three-dimensional echocardiography to assess LA reservoir, conduit, and booster pump function.
• Evaluation of LV function (shortening fraction, diastolic parameters, myocardial performance index) and LA volumes.

Main Results:

• No significant differences were observed in LV shortening fraction or global function indices between groups.
• Patients who received AC therapy demonstrated significantly lower LA reservoir and conduit function compared to controls.
• LA booster pump function parameters showed variable results, with some abnormalities noted in the AC group.

Conclusions:

• Children treated with AC exhibit reduced LA reservoir and abnormal booster function, indicating potential early cardiac changes.
• These findings suggest that LA size and function may serve as sensitive markers for detecting AC-induced cardiotoxicity in pediatric patients.
• Further research is warranted to validate LA parameters for prognostication and monitoring of cardiotoxicity in this population.