Polycythemia in children shows the symptom of?

Appeared in: AIIMS Rishikesh & Jodhpur NO - 2017

Explanation

Polycythemia is a condition defined by an increased number of red blood cells (RBCs) in the circulation.
The high concentration of RBCs, which contain red-pigmented hemoglobin, results in a ruddy or reddish skin color known as plethora.
This plethora is most noticeable on the face, giving the child a flushed appearance, and can also be seen on the palms, soles, and mucous membranes.

Option A: Cardiomegaly (enlargement of the heart) is not a primary symptom but a potential long-term complication of chronic polycythemia due to the increased workload on the heart from pumping hyperviscous blood.
Option B: Polyuria, or excessive urination, is not a feature of polycythemia. Its causes are typically related to renal or endocrine issues.
Option C: Edema, which is swelling caused by excess fluid in body tissues, is not a characteristic sign of polycythemia.

Clinical Relevance

Nursing practice connection: Knowing Clinical manifestations of polycythemia in children helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A flushed or plethoric appearance in a child is a key sign that should prompt a nurse to consider an underlying hematologic disorder like polycythemia and advocate for a complete blood count (CBC).
Nurses caring for children with polycythemia must monitor for symptoms of hyperviscosity, such as headaches, dizziness, blurred vision, and signs of thrombosis (blood clots), which are serious complications.
What if? If a child with a flushed face also presents with central cyanosis (bluish lips and tongue), the polycythemia is likely secondary to chronic low oxygen levels from a congenital heart or lung disease. This requires an urgent cardiac and pulmonary evaluation, shifting the focus from the blood disorder to its underlying cause.

How to Approach the Question

First, identify the key term in the question: 'Polycythemia'.
Recall the basic definition of polycythemia, which is an excess of red blood cells.
Consider the primary characteristic of red blood cells: they are red due to hemoglobin.
Logically deduce the most direct physical sign of having too many red cells. An excess of red would lead to a redder or 'flushed' appearance of the skin.
Evaluate each option based on this physiological understanding. Cardiomegaly is a long-term effect, while polyuria and edema are unrelated to red blood cell concentration. A flushed face is a direct consequence.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 2 pp. 790-792, 620-622

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