Corrosive Poisons MCQ Quiz | Clinical Toxicology

Welcome, MBBS students, to this specialized quiz on Corrosive Poisons. This module is a critical part of Clinical Toxicology, focusing on the pathophysiology, clinical presentation, and management of poisoning by strong acids and alkalis. This quiz contains 25 multiple-choice questions designed to test your understanding of key concepts like coagulative versus liquefactive necrosis, specific signs of different corrosives (e.g., vitriolage), and crucial management principles, including the contraindications for emesis and gastric lavage. Challenge your knowledge and reinforce your learning with this comprehensive assessment. After submitting your answers, you can review your score and see detailed explanations. You will also have the option to download all the questions with their correct answers in a PDF format for future revision. Good luck!

1. Which type of necrosis is characteristic of strong acid poisoning, leading to a hard, dry eschar?

2. The term “vitriolage” refers to the act of throwing which corrosive substance on a person?

3. Ingestion of Nitric acid typically produces vomitus and stains of what color?

4. Which of the following is a primary reason why gastric lavage is contraindicated in corrosive poisoning?

5. A key difference in the mechanism of injury between strong alkalis and strong acids is that alkalis cause:

6. Which is the most appropriate immediate first-aid measure for a conscious patient who has ingested a liquid corrosive?

7. The most common and significant long-term complication following recovery from corrosive ingestion is:

8. Which corrosive is known for causing severe systemic toxicity, including hypocalcemia and acute renal failure due to calcium oxalate crystal deposition?

9. When is endoscopy generally considered safest and most useful for assessing the extent of injury after corrosive ingestion?

10. A patient presents with dysphagia, drooling, and severe retrosternal pain after ingesting a cleaning agent. What is the immediate priority in management?

11. Carbolic acid (phenol) poisoning is associated with a characteristic staining of skin and mucous membranes, which is typically:

12. Sodium hydroxide (Caustic Soda) is a common example of:

13. A patient who ingested a corrosive develops stridor and hoarseness of voice. This strongly suggests involvement of the:

14. Why is the use of chemical neutralizing agents (e.g., bicarbonate for acid) contraindicated in the management of corrosive ingestion?

15. Which of the following metallic salts is known to act as a corrosive poison?

16. Ingestion of which corrosive produces a characteristic garlic-like odor in the breath and vomitus?

17. Compared to acid ingestion, alkali ingestion typically poses a greater risk of:

18. The Zargar classification is used for grading:

19. What is the role of corticosteroids in the management of corrosive ingestion?

20. A patient ingests an unknown corrosive. The vomitus is blackish (“coffee ground”). Which poison is most likely responsible?

21. Carbolic acid (Phenol) poisoning causes a characteristic urine discoloration, which is described as:

22. Which of the following is NOT a typical feature of corrosive poisoning?

23. The eschar formed by alkalis is typically soft, gelatinous, and “soapy” to touch. This is due to:

24. In a case of corrosive ingestion, which investigation is absolutely contraindicated in the acute phase?

25. A patient has ingested a strong acid. Which part of the gastrointestinal tract is most likely to be severely affected?

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