Beta-thalassemia is an autosomal recessive disorder. It is characterised by reduced haemoglobin levels in the… - AIIMS Jodhpur SNO-2023

AIIMS Jodhpur SNO-2023

Pathology & Genetics

Easy

Appeared in: AIIMS Jodhpur SNO-2023

Explanation

Cooley's anemia is the historical name for beta-thalassemia major, the most severe form of the disease.
It is a homozygous autosomal recessive disorder, resulting from inheriting a defective beta-globin gene from both parents.
The condition is characterized by a severe reduction or complete absence of beta-globin chain synthesis, leading to life-threatening anemia that manifests in early infancy.
Without treatment, which includes lifelong blood transfusions, it leads to severe complications and early death.

Option A: Aplastic anemia is incorrect because it is a condition of bone marrow failure leading to pancytopenia (a deficiency of all three blood cell types), not a specific defect in hemoglobin synthesis.
Option B: Sickle cell anemia is a qualitative hemoglobinopathy caused by the production of abnormal hemoglobin S (HbS), which deforms red cells. Beta-thalassemia is a quantitative disorder involving reduced production of normal beta-globin.
Option D: Haemolytic anaemia is a broad category of diseases involving premature red blood cell destruction. While beta-thalassemia is a type of hemolytic anemia, 'Cooley's anemia' is the specific eponym for beta-thalassemia major, making it the more precise answer.

Visual 1: Infographic: A comparative chart showing the pathophysiology of Beta-Thalassemia (quantitative defect), Sickle Cell Anemia (qualitative defect), and Aplastic Anemia (bone marrow failure).
Visual 2: Image: A peripheral blood smear from a patient with beta-thalassemia major, highlighting key features like severe hypochromia, microcytosis, target cells, and anisopoikilocytosis (variation in size and shape).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Synonyms and Pathophysiology of Beta-Thalassemia as background academic context rather than a clinical decision trigger.
Nurses play a vital role in managing patients with Cooley's anemia, which includes administering blood transfusions and iron chelation therapy, monitoring for complications of iron overload, and providing patient and family education.
Understanding the genetic basis is crucial for providing effective genetic counseling to families. If both parents have beta-thalassemia minor (trait), there is a 25% chance with each pregnancy of having a child with Cooley's anemia.
What if? If the patient had beta-thalassemia minor (trait) instead of major, they would likely be asymptomatic or have only mild microcytic anemia. They would not be called 'Cooley's anemia' and would not require regular blood transfusions.

How to Approach the Question

First, identify the core of the question, which is asking for a synonym for beta-thalassemia.
Recall or deduce that beta-thalassemia has different levels of severity (minor, intermedia, major) and that the most severe form has a specific eponym.
Evaluate each option: 'Aplastic anaemia' and 'sickle cell anaemia' have distinctly different causes and pathologies.
Consider 'haemolytic anaemia'. Recognize that this is a broad category, and while thalassemia fits into it, it's not a specific synonym.
Identify 'Cooley's anaemia' as the specific historical name for beta-thalassemia major.
Select the most precise and correct term, which is Cooley's anaemia.

Concept Tested & Keywords

Concept Tested: Synonyms and Pathophysiology of Beta-Thalassemia
Stem keywords: Beta-thalassemia, autosomal recessive disorder, reduced haemoglobin
Lead-in keywords: also known as

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