CSF Rhinorrhoea MCQ Quiz | Nose & Paranasal Sinuses

Welcome to this specialized quiz on Cerebrospinal Fluid (CSF) Rhinorrhoea, a critical topic within the Nose & Paranasal Sinuses module for MBBS students. This quiz is designed to test your understanding of the etiology, clinical presentation, diagnosis, and management of this significant condition. Covering everything from the classic biochemical markers like Beta-2 Transferrin to the nuances of surgical repair, these 25 multiple-choice questions will challenge your recall and application of key concepts. A firm grasp of this topic is essential due to the potentially life-threatening complication of meningitis. After completing the quiz, you can review your performance and download a PDF version of all questions with the correct answers for your revision. Good luck!

1. What is the most common cause of traumatic CSF rhinorrhoea?

2. The most specific and sensitive biochemical marker for detecting CSF in nasal discharge is:

3. Which imaging modality is considered the gold standard for precise localization of a CSF leak?

4. The most common site of bony defect in the anterior cranial fossa leading to CSF rhinorrhoea is the:

5. The most serious and life-threatening complication of untreated CSF rhinorrhoea is:

6. First-line management for a small, post-traumatic CSF leak with no significant bony defect typically involves:

7. The “Reservoir Sign” is clinically elicited by asking the patient to:

8. Spontaneous CSF rhinorrhoea is most commonly associated with which underlying condition?

9. The “Halo” or “Double Ring” sign is due to:

10. Iatrogenic CSF leak is a known complication most commonly associated with which procedure?

11. Intrathecal fluorescein is used intraoperatively to:

12. The preferred surgical approach for repairing most anterior skull base defects is:

13. Which of the following is an example of an autologous graft material used for CSF leak repair?

14. Conservative management for traumatic CSF leak is generally continued for how long before surgical intervention is considered?

15. The glucose concentration in CSF is typically what percentage of the serum glucose level?

16. A defect in the lateral recess of the sphenoid sinus (Sternberg’s canal) is a classic site for which type of CSF leak?

17. Which risk factor is strongly associated with spontaneous CSF leaks in middle-aged adults?

18. After surgical repair of a CSF leak, patients are typically advised to avoid:

19. What is the primary role of MRI in the diagnostic workup of CSF rhinorrhoea?

20. The most common causative organism for ascending meningitis secondary to a CSF leak is:

21. Testing nasal fluid with a glucose oxidase strip (Dextrostix) is considered unreliable because:

22. The Hadad-Bassagasteguy flap, a vascularized pedicled flap used for large skull base repairs, is harvested from the:

23. A patient presents with unilateral clear watery rhinorrhoea that tastes salty. Which finding would most strongly support a diagnosis of CSF rhinorrhoea?

24. What is the main purpose of placing a lumbar drain in the management of a CSF leak?

25. A delayed traumatic CSF rhinorrhoea can occur weeks to months after a head injury. This is often due to: