IBCLC - Certification Maternal and Infant Pathology Questions and Answers

Question 1

A mother who experienced a severe postpartum hemorrhage is seen on day 5 postpartum. She reports extreme fatigue and a complete failure of her milk to 'come in', despite frequent nursing attempts by a well-latching infant. Which of the following maternal conditions is the most likely cause of her lactation failure?

Accepted Answer

Sheehan's Syndrome

Answer

Sheehan's Syndrome is necrosis of the pituitary gland caused by severe blood loss and hypovolemic shock during or after childbirth. This damage can lead to hypopituitarism, where the pituitary fails to produce adequate hormones, including prolactin, which is essential for lactation. The primary initial symptom is often a failure to lactate (agalactorrhea).

Question 2

A 5-day-old, exclusively breastfed infant presents with lethargy, vomiting, jaundice, and poor weight gain since birth. The mother reports the infant was feeding well initially but is now refusing the breast. These symptoms are most indicative of which rare metabolic disorder where breastfeeding is contraindicated?

Accepted Answer

Galactosemia

Answer

Galactosemia is an inherited metabolic disorder where the body cannot properly digest galactose, a sugar found in milk (including breast milk). Symptoms appear within a few days of initiating milk feedings and include vomiting, jaundice, lethargy, and failure to thrive. If untreated, it can lead to severe liver damage, cataracts, and brain damage; therefore, breastfeeding is contraindicated.

Question 3

A breastfeeding mother is diagnosed with infectious mastitis. Which of the following microorganisms is the most common causative agent?

Accepted Answer

Staphylococcus aureus

Answer

Staphylococcus aureus is the bacterium most commonly responsible for infectious mastitis. It is often found on the skin and can enter the breast through a crack or fissure in the nipple, leading to infection within the mammary ducts.

Question 4

An IBCLC is called to assess a 1-day-old (20 hours) infant who appears visibly jaundiced. Which of the following is the most critical factor that distinguishes this as a potentially pathologic, rather than physiologic, situation?

Accepted Answer

The jaundice appeared within the first 24 hours of life.

Answer

Jaundice that appears within the first 24 hours of life is considered pathologic until proven otherwise and requires immediate medical evaluation. Physiologic jaundice typically does not appear until after 24 hours of age, usually peaking between days 3 and 5.

Question 5

A mother at 12 days postpartum reports a sudden decrease in milk supply accompanied by an unexpected return of heavy, bright red vaginal bleeding. Which condition should be suspected as the underlying cause?

Accepted Answer

Retained placental fragments

Answer

Retained placental fragments can cause secondary postpartum hemorrhage (late-onset heavy bleeding) and can also suppress lactation. The fragments continue to secrete progesterone, which inhibits prolactin from binding to its receptors in the breast, thereby interfering with lactogenesis II (the onset of copious milk production).

IBCLC - Certification Exam Practice Test

IBCLC - Certification Exam Practice Test

IBCLC - Certification Maternal and Infant Pathology Questions and Answers