Neonatal Hypocalcemia MCQ Quiz | Neonatology

Welcome to this specialized quiz on Neonatal Hypocalcemia, a critical topic in Neonatology for MBBS students. This quiz is designed to test your understanding of the causes, clinical manifestations, diagnosis, and management of low calcium levels in newborns. Covering both early and late-onset forms, the questions delve into the intricate pathophysiology involving parathyroid hormone, vitamin D, and maternal factors. This assessment will challenge your ability to differentiate symptoms and apply correct treatment protocols, such as administering IV calcium gluconate. After completing the 25 MCQs and submitting your answers, you will receive your score and a detailed review. You can also download all questions with their correct answers in a PDF format for future revision.

1. Neonatal hypocalcemia is typically defined as a total serum calcium level below:

2. Early-onset neonatal hypocalcemia typically occurs within the first:

3. Late-onset neonatal hypocalcemia is most commonly associated with:

4. The most common cause of early-onset hypocalcemia in neonates is:

5. A term infant born to a mother with which condition is at a particularly high risk for early-onset hypocalcemia?

6. Which of the following is a classic symptom of neuromuscular excitability in neonatal hypocalcemia?

7. A severe and life-threatening manifestation of neonatal hypocalcemia is:

8. The characteristic ECG finding in a neonate with hypocalcemia is:

9. Hypocalcemia often coexists with, and can be resistant to treatment without correction of, which other electrolyte abnormality?

10. The biologically active form of calcium in the blood is:

11. For a neonate presenting with seizures due to hypocalcemia, the immediate treatment of choice is:

12. A critical precaution during the administration of intravenous calcium gluconate is:

13. Rapid infusion of intravenous calcium can lead to which of the following adverse effects?

14. Hypocalcemia in neonates with DiGeorge syndrome (22q11.2 deletion) is primarily caused by:

15. The mechanism by which maternal diabetes leads to neonatal hypocalcemia involves:

16. The gold standard for assessing calcium status in a critically ill neonate is:

17. Chvostek’s sign, although not highly reliable in neonates, involves tapping over which nerve?

18. What is the primary role of Vitamin D in calcium homeostasis?

19. In cases of asymptomatic hypocalcemia, what is the preferred management strategy?

20. Parathyroid hormone (PTH) increases serum calcium by all the following mechanisms EXCEPT:

21. Perinatal asphyxia contributes to hypocalcemia primarily through:

22. Prophylactic calcium supplementation is often considered for which group of neonates?

23. Extravasation of IV calcium is a serious complication that can cause:

24. What is the expected serum phosphate level in late-onset hypocalcemia due to high phosphate formula?

25. A neonate presenting with jitteriness, a total calcium of 7.5 mg/dL, and a magnesium level of 1.2 mg/dL should first receive: