What is Colostrum?

Appeared in: NHM MP Staff Nurse-2019

Explanation

Colostrum is the specific term for the first milk secreted by the mammary glands, beginning in late pregnancy and continuing for the first few days (typically 3-4) after delivery.
It is characterized by its thick, sticky, and often yellowish appearance.
Its composition is unique, being high in protein, immunoglobulins (especially secretory IgA), and fat-soluble vitamins (A, D, E, K), which provide crucial passive immunity to the newborn.
It is produced in small quantities, which is appropriate for the newborn's small stomach size.
Colostrum also has a laxative effect, which helps the infant pass meconium (the first stool) and reduces the risk of jaundice.

Option B: Milk secreted at the end of 6 months is mature milk. Its composition is different from colostrum, with higher levels of fat and lactose to support the baby's continued growth.
Option C: This is a dangerous and incorrect myth. Colostrum is sterile, clean, and packed with protective antibodies and immune cells. It is often referred to as the baby's 'first immunization'.
Option D: This option is incorrect because a correct definition is provided in the first option.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition and characteristics of colostrum as background academic context rather than a clinical decision trigger.
Nurses play a vital role in educating new mothers about the immense benefits of colostrum and encouraging early initiation of breastfeeding, ideally within the first hour of birth.
The laxative effect of colostrum helps the newborn pass meconium, which reduces the absorption of bilirubin and lowers the risk of neonatal jaundice.
The high concentration of secretory IgA in colostrum coats the infant's gastrointestinal tract, providing passive immunity and protecting against pathogens.

How to Approach the Question

This is a factual recall question that tests your knowledge of lactation.
First, identify the key term in the question: 'Colostrum'.
Recall the definition of colostrum, specifically its timing in relation to childbirth and its key characteristics.
Evaluate each option against this definition.
Option A correctly identifies colostrum as the milk secreted in the first few days after delivery.
Option B describes mature milk, which is produced later.

Concept Tested & Keywords

Q2zocuGvbit7lIj53kcoSb

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 141-143

E6 Nutrition Kumud Khanna 2e p. 127-129

E6 Textbook of Biochemistry for medical StudentsDM Vasudevan Part 2 — Subpart A (pp 1-239 of 478) p. 98-100

Practise the full NHM MP Staff Nurse-2019

Attempt every question from this paper in a timed mock, then review the full solution for each one.