MCQ: Anemic Heart Failure

Correct Answer: C. Slow Packed red blood cell transfusion  with intravenous furosemide

Explanation: Anemic Heart Failure 

This child has high-output cardiac failure secondary to profound iron deficiency anemia, a classic presentation in toddlers with excessive cow’s milk intake and poor complementary feeding. Severe chronic anemia reduces blood viscosity and systemic vascular resistance, leading to increased cardiac output. Over time, myocardial compensation fails, resulting in tachycardia, hepatomegaly, pulmonary edema, and gallop rhythm despite a structurally normal heart.

The priority is to stabilize heart failure while cautiously correcting anemia.

Why C is correct

• Severe decompensated anemic  heart failure requires small-volume PRBC transfusions (5 mL/kg) administered slowly over 3–4 hours.
• Furosemide (0.5–1 mg/kg IV) before or during transfusion reduces the risk of circulatory overload.
• Additional aliquots may be required depending on the clinical response and hemoglobin level.
• Iron replacement should begin after hemodynamic stabilization.

Why the other options are incorrect

A. Immediate 20 mL/kg PRBC transfusion
A large, rapid transfusion can precipitate transfusion-associated circulatory overload (TACO) and worsen pulmonary edema.

B. Intravenous iron alone
Iron replenishes stores but does not rapidly improve oxygen-carrying capacity in life-threatening anemia with heart failure.

D. Oral iron and discharge
This is inappropriate because the child has decompensated heart failure, requiring emergency management.

E. Exchange transfusion
Exchange transfusion is indicated for conditions such as severe neonatal hyperbilirubinemia or selected hemoglobinopathies, not iron deficiency anemia.

High-Yield Pearls

• Iron deficiency is the most common cause of high-output heart failure in toddlers with nutritional anemia.
• Excessive cow’s milk intake (>500–700 mL/day after 12 months) is a major risk factor for severe iron deficiency.
• Severe anemia (Hb <4–5 g/dL) with signs of heart failure is an indication for carefully controlled PRBC transfusion, not rapid correction.
• In children with anemic heart failure, transfuse slowly in small aliquots (5 mL/kg) with close monitoring and consider furosemide to prevent volume overload.
• Long-term management includes iron therapy, dietary counseling, and limiting cow’s milk intake while introducing iron-rich complementary foods.

Find clinical scenario based System-wise MCQs for Board exam preparation. 

External Resources

1. American Academy of Pediatrics – Clinical Report on Iron Deficiency and Iron Deficiency Anemia
   Updated guidance on pediatric iron-deficiency anemia, including severe anemia, red blood cell transfusion, and excessive milk intake.

2. Royal Children’s Hospital Melbourne – Clinical Practice Guideline: Anaemia
   Pediatric assessment of severe anemia, red flags, admission criteria, and indications for specialist care.

3. Royal Children’s Hospital Melbourne – Clinical Practice Guideline: Iron Deficiency
   Guidance on nutritional iron deficiency, excessive cow’s milk consumption, iron replacement, and dietary counseling.

References

1. Powers JM, Heeney MM, Hord J, et al. Prevention, screening, diagnosis, and treatment of iron deficiency and iron deficiency anemia in infants, children, and adolescents: a clinical report. Pediatrics. 2026;158(1). doi:10.1542/peds.2026-077414. 

2. Royal Children’s Hospital Melbourne. Clinical practice guideline: anaemia [Internet]. Melbourne: The Royal Children’s Hospital Melbourne. 

3. Royal Children’s Hospital Melbourne. Clinical practice guideline: iron deficiency [Internet]. Melbourne: The Royal Children’s Hospital Melbourne.