The causes of hypoparathyroidism include?
a. Damage of glands during thyroidectomy
b. Congenital anomaly of the gland
c. Fractured base of skull
d. Development of antibodies to parathyroid cells

Appeared in: AIIMS Raipur - 2017 (shift-2)

Explanation

The correct option includes the three primary etiologies for hypoparathyroidism: iatrogenic, congenital, and autoimmune.
Damage during thyroidectomy (iatrogenic) is the most frequent cause, resulting from accidental removal or devascularization of the parathyroid glands.
Congenital anomalies, such as DiGeorge syndrome, involve the failure of the parathyroid glands to develop, leading to deficient PTH production from birth.
Autoimmune destruction involves the body producing antibodies that attack and destroy parathyroid cells, leading to glandular failure.

Option A: This option incorrectly includes 'c' (Fractured base of skull) as a cause of hypoparathyroidism.
Option B: This option incorrectly includes 'c' (Fractured base of skull) and omits 'a' (Damage of glands during thyroidectomy), which is the most common cause.
Option D: This option incorrectly includes 'c' (Fractured base of skull) as a cause.

Visual 1: Anatomical Diagram - Shows the close proximity of the four small parathyroid glands to the larger thyroid gland in the neck, illustrating why they are at risk during thyroid surgery.
Visual 2: Infographic - Illustrates the clinical signs of hypocalcemia, such as Chvostek's sign (facial muscle twitching) and Trousseau's sign (carpopedal spasm), which are classic manifestations of hypoparathyroidism.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Etiology of Hypoparathyroidism as background academic context rather than a clinical decision trigger.
Post-thyroidectomy care is a critical nursing responsibility. The most common cause of hypoparathyroidism is surgery, so nurses must vigilantly monitor patients for signs of hypocalcemia.
Key nursing interventions include assessing for perioral tingling, numbness in fingers/toes, muscle cramps, and positive Chvostek's/Trousseau's signs. The nurse should ensure that IV calcium gluconate and emergency airway equipment are readily available at the bedside to manage tetany or laryngospasm.
What if? If a post-thyroidectomy patient develops hoarseness and difficulty breathing, the nurse's priority is to maintain a patent airway and immediately notify the surgeon and rapid response team, as this could indicate laryngeal nerve damage or severe hypocalcemia-induced laryngospasm.

How to Approach the Question

First, understand the question is asking for the known causes of hypoparathyroidism from a list of statements.
Evaluate each statement (a, b, c, d) for its medical accuracy.
Statement 'a' (thyroidectomy damage) is the most common cause. It is correct.
Statement 'b' (congenital anomaly) is a known cause (e.g., DiGeorge syndrome). It is correct.
Statement 'c' (skull fracture) relates to head trauma. The parathyroids are in the neck. This is incorrect.
Statement 'd' (autoimmune) is a recognized cause. It is correct.

Concept Tested & Keywords

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