Cardiac MRI for Iron Overload in pediatric thalassemia patients- Right Age to Start in a Resource Constrained...

Area of Science:

• Cardiology
• Radiology
• Hematology

Background:

• Thalassemia patients require regular monitoring for iron overload due to blood transfusions.
• Myocardial iron overload is a serious complication that can lead to cardiac dysfunction.
• Early detection and management are crucial for improving patient outcomes.

Purpose of the Study:

• To determine the prevalence and severity of myocardial iron overload in first-time cardiac MRI patients with thalassemia.
• To identify the optimal age for initiating screening for myocardial iron overload in resource-constrained settings.

Main Methods:

• Retrospective analysis of cardiac MRI scans (T2* values at 1.5T) from 600 thalassemia patients (aged 2-30 years) between 2015-2018.
• Categorization of myocardial iron overload severity: normal, mild, moderate, and severe.
• Analysis of prevalence across different age groups, with a focus on younger children.

Main Results:

• Overall prevalence of myocardial iron overload was 32.3%.
• Prevalence in the 0-10 year age group was 10.2%.
• Only 2 out of 40 patients (5%) aged 0-6 years showed myocardial iron overload.

Conclusions:

• Myocardial iron overload is prevalent in thalassemia patients up to age 30.
• Screening for myocardial iron overload may not be necessary in children younger than 6 years.
• Resource-constrained environments can optimize screening protocols based on age-specific prevalence data.