TB Drug Quiz: Master Antitubercular Drugs & RIPE Therapy

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4. Rifampin's bactericidal activity primarily targets which mycobacterial structure?

Cell membrane

Ribosomal RNA polymerase

DNA gyrase

Peptidoglycan layer

5. Isoniazid-induced peripheral neuropathy can be prevented by supplementing with:

Vitamin A

Vitamin B6 (pyridoxine)

Vitamin C

Vitamin D

6. The most common cause of TB drug resistance in non-adherent patients is:

Genetic mutation in the mycobacterium

Subtherapeutic drug levels from missed doses

Drug-drug interactions

Patient's immune system adaptation

7. Rifampin accelerates metabolism of warfarin. Patients on both drugs require:

Decreased warfarin dose

Increased warfarin dose and INR monitoring

Switching to heparin instead

No dose adjustment needed

8. Which baseline test is essential before starting ethambutol therapy?

Visual acuity and color discrimination

Audiometry

Bone density scan

Pulmonary function testing

9. Pyrazinamide is bactericidal in which pH environment within macrophages?

Neutral pH

Alkaline pH

Acidic pH

Variable depending on infection site

10. A patient on rifampin reports decreased effectiveness of oral contraceptives. This is due to:

Inhibition of estrogen metabolism

Enzyme induction increasing oral contraceptive clearance

Direct antagonism of hormonal activity

Malabsorption in the GI tract

11. Which antitubercular drug is a prodrug requiring hepatic activation to become bactericidal?

Isoniazid

Rifampin

Pyrazinamide

Ethambutol

12. The standard duration of RIPE therapy for drug-susceptible TB is:

2 weeks

2 months intensive phase, 4 months continuation

6 months total

12 months minimum

13. Which antitubercular drug causes a red-orange discoloration of body fluids?

Isoniazid

Rifampin

Pyrazinamide

Ethambutol

14. Ethambutol's primary adverse effect on the nervous system is:

Optic neuritis causing red-green color blindness

Peripheral neuropathy in lower extremities

Seizures and encephalopathy

Vertigo and vestibular dysfunction

15. A patient develops hepatotoxicity during RIPE therapy. Which two drugs are most commonly implicated?

Isoniazid and pyrazinamide

Rifampin and ethambutol

Isoniazid and ethambutol

Pyrazinamide and rifampin

16. What is the primary mechanism of action of isoniazid in TB treatment?

Inhibits mycobacterial cell wall synthesis

Inhibits mycobacterial RNA polymerase

Inhibits mycobacterial protein synthesis

Disrupts mycobacterial DNA replication

17. Which antitubercular drug is contraindicated in patients with color blindness?

Isoniazid

Rifampin

Ethambutol

Pyrazinamide

18. Pyrazinamide can elevate serum levels of which substance, requiring monitoring?

Glucose

Uric acid

Albumin

Hemoglobin

19. A patient on TB therapy develops peripheral neuropathy. Which drug is most likely responsible?

Rifampin

Isoniazid

Pyrazinamide

Ethambutol

20. Rifampin is known to induce which hepatic enzyme system, affecting drug interactions?

CYP2D6 only

CYP3A4 and other cytochrome P450 enzymes

Monoamine oxidase

Glucuronyl transferase exclusively

TB Drug Quiz: Can You Master RIPE Therapy?

1. Isoniazid is metabolized by hepatic ____ acetylation, which varies among patients.

2.

What first name or nickname would you like us to use?

2. Pyrazinamide is converted to its active form, pyrazinoic acid, by mycobacterial ____.

3. During TB treatment, liver function tests should be monitored if baseline AST/ALT is ____.

4. Rifampin's bactericidal activity primarily targets which mycobacterial structure?

5. Isoniazid-induced peripheral neuropathy can be prevented by supplementing with:

6. The most common cause of TB drug resistance in non-adherent patients is:

7. Rifampin accelerates metabolism of warfarin. Patients on both drugs require:

8. Which baseline test is essential before starting ethambutol therapy?

9. Pyrazinamide is bactericidal in which pH environment within macrophages?

10. A patient on rifampin reports decreased effectiveness of oral contraceptives. This is due to:

11. Which antitubercular drug is a prodrug requiring hepatic activation to become bactericidal?

12. The standard duration of RIPE therapy for drug-susceptible TB is:

13. Which antitubercular drug causes a red-orange discoloration of body fluids?

14. Ethambutol's primary adverse effect on the nervous system is:

15. A patient develops hepatotoxicity during RIPE therapy. Which two drugs are most commonly implicated?

16. What is the primary mechanism of action of isoniazid in TB treatment?

17. Which antitubercular drug is contraindicated in patients with color blindness?

18. Pyrazinamide can elevate serum levels of which substance, requiring monitoring?

19. A patient on TB therapy develops peripheral neuropathy. Which drug is most likely responsible?

20. Rifampin is known to induce which hepatic enzyme system, affecting drug interactions?