Anemia is one of the major global problems that continues to this day. According to World Health Organization (WHO) data, anemia is found in 1.62 billion people or equivalent to 24.8% of the world's population while, the prevalence of anemia in children under 6 years of age in Indonesia reached 38.4%. Anemia, if undiagnosed or untreated for a long period of time can lead to multiorgan failure. The cardiovascular system is the most commonly affected system in chronic anemia. Between one-third and two-thirds of patients with severe anemia have cardiomegaly and this will return to normal within a few weeks after the anemia is well managed. This abnormality can be evaluated on chest radiograph or echocardiography.

Inclusion Criteria:

• Anemia patients aging maximum 18 years old
• Anemia patients who had undergone chest radiograph and echocardiography

Exclusion Criteria:

• Anemia patients who had undergone definitive surgery
• Anemia patients who had took iron supplementation in the last 3 months
• Anemia patients who had other anemic conditions such as chronic kidney disease or hemolytic anemia

All children diagnosed with anemia; whether from the pediatric ward and pediatric cardiology outpatient clinic