Course Content
OSCE Station 1 — Identification of Intestinal Helminth Ova: Ascaris, Enterobius and Ankylostoma
KMU clinical activity: Ascaris lumbricoides, Enterobius vermicularis and Ankylostoma duodenale — identification of morphological and staining characteristics of ova. Learning Objectives The student should be able to: Identify the important morphological and staining characteristics of Ascaris lumbricoides ova. Identify the important morphological and staining characteristics of Enterobius vermicularis ova. Identify the important morphological and staining characteristics of Ankylostoma duodenale ova. Differentiate the three ova when presented as specimens or images at the station.
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Topic: OSCE Station 1 — Identification of Intestinal Helminth Ova: Ascaris, Enterobius and Ankylostoma
OSCE Station 2 — Liver Function Tests: Interpretation in Clinical Scenarios
KMU clinical activity: Liver Function Tests. Learning Objectives The student should be able to: Interpret normal liver function test results. Identify abnormal liver function test results. Interpret abnormal liver function tests in the context of different clinical scenarios. Integrate the principal liver function test findings presented at the station.
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Topic: OSCE Station 2 — Liver Function Tests: Interpretation in Clinical Scenarios
OSCE Station 3 — Prescription Writing I: Peptic Ulcer Disease and Antiemetic Therapy
KMU clinical activity: Peptic ulcer disease; anti-emetics — prescription construction for Helicobacter-associated peptic ulcer disease and common clinical indications for antiemetic therapy. Learning Objectives The student should be able to: Construct a prescription for Helicobacter-associated peptic ulcer disease using triple therapy. Construct a prescription for Helicobacter-associated peptic ulcer disease using quadruple therapy. Construct an appropriate prescription for motion sickness. Construct an appropriate prescription for morning sickness. Construct an appropriate prescription for a post-operative patient requiring antiemetic therapy. Construct an appropriate prescription for cancer chemotherapy-induced vomiting.
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Topic: OSCE Station 3 — Prescription Writing I: Peptic Ulcer Disease and Antiemetic Therapy
OSCE Station 4 — Prescription Writing II: Amoebic Dysentery, Enteric Fever and Ascariasis
Learning Objectives The student should be able to: Construct a prescription for a patient suffering from amoebic dysentery. Construct a prescription for a patient suffering from enteric fever. Write a prescription for a patient suffering from ascariasis. Select and present the appropriate prescription according to the clinical scenario provided at the station.
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Topic: OSCE Station 4 — Prescription Writing II: Amoebic Dysentery, Enteric Fever and Ascariasis
OSCE Station 5 — Corrosive Poisons and Vitriolage
KMU clinical activity: Poisons/corrosives — identification of corrosives and case presentation of vitriolage. Learning Objectives The student should be able to: Identify corrosive substances/poisons presented at the station. Present a case of vitriolage in a structured manner. Relate the presented corrosive substance or scenario to the relevant forensic case.
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Topic: OSCE Station 5 — Corrosive Poisons and Vitriolage
OSCE Station 6 — Identification of Irritant, Metallic, Non-Metallic, Vegetable and Animal Poisons
KMU clinical activity: Irritants; metallic poisons; non-metallic poisons; vegetable poisons; animal poisons. Learning Objectives The student should be able to: Identify common irritant poisons. Identify common metallic poisons. Identify common non-metallic poisons. Identify common vegetable poisons. Identify common animal poisons. Differentiate the major poison categories when presented as specimens, models or spotters.
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Topic: OSCE Station 6 — Identification of Irritant, Metallic, Non-Metallic, Vegetable and Animal Poisons
OSCE Station 7 — Nutrition Models: Protein-Calorie Malnutrition, Food Plate, Food Pyramid, Fortification and Adulteration
KMU clinical activity: Protein-calorie malnutrition; My Food Plate/The Pyramid; food fortification and food adulteration. Learning Objectives The student should be able to: Identify a protein-calorie malnutrition model presented at the station. Differentiate between the clinical features of the two protein-calorie malnutrition models. Explain the public-health importance of protein-calorie malnutrition. Explain the concepts of food fortification and food adulteration. Identify the My Food Plate/Food Pyramid model. Describe the different components of the food plate/food pyramid model.
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Topic: OSCE Station 7 — Nutrition Models: Protein-Calorie Malnutrition, Food Plate, Food Pyramid, Fortification and Adulteration
OSCE Station 8 — Health Education: Identification and Formulation of a Health Message
KMU clinical activity: Health education — identification and formulation of a health-education message from a provided problem or scenario. Learning Objectives The student should be able to: Identify an appropriate health-education message for the problem or scenario provided. Formulate an appropriate health-education message for the problem or scenario provided. Present the message clearly and appropriately according to the scenario.
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Topic: OSCE Station 8 — Health Education: Identification and Formulation of a Health Message
OSCE Station 9 — Vector Identification and Control: Housefly/Arthropods and Aedes aegypti
KMU clinical activity: Housefly/arthropods and Aedes aegypti — model identification, associated disease and vector control. Learning Objectives The student should be able to: Identify a housefly/arthropod model presented at the station. Explain the disease associated with the vector and its control. Identify an Aedes aegypti model presented at the station. Explain the disease associated with this vector and its control. Differentiate the two vectors when presented as models or specimens.
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Topic: OSCE Station 9 — Vector Identification and Control: Housefly/Arthropods and Aedes aegypti
OSCE Station 10 — Autoclave and Instrument Sterilization
KMU clinical activity: Autoclave — model identification, items suitable for autoclaving and steps of instrument sterilization. Learning Objectives The student should be able to: Identify the autoclave model. Explain the types of items for which autoclaves are used. Explain the steps of instrument sterilization. Integrate the relevant sterilization steps when presented with an autoclave-based practical scenario.
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Topic: OSCE Station 10 — Autoclave and Instrument Sterilization
AIM OSPE/OSCE Lab — GIT & Hepatobiliary-II Module | 4th Year MBBS
AIM OSCE / OSPE • MBBS

Station 5 — Corrosive Poisons and Vitriolage

4th Year • GIT / Hepatobiliary • Rapid Revision • Forensic Practical • Viva

🎯 Candidate Task

Examine the corrosive substance or scenario provided, identify the corrosive where possible, and present the associated forensic case in a structured manner. If a prescription scenario is provided, select and write an appropriate prescription for that clinical situation.

⚡ Model Station Answer

Identification: Corrosive poisons include strong acids such as sulfuric, nitric and hydrochloric acids, and strong alkalis such as sodium or potassium hydroxide.

Vitriolage: Vitriolage refers to an assault in which a corrosive substance, classically an acid, is deliberately thrown on a person causing chemical burns.

Case presentation: I would state the circumstances of exposure, suspected corrosive, sites and extent of injury, important clinical findings, treatment already given and relevant documentation.

Forensic relevance: The substance/container, clothing and other relevant material should be preserved appropriately and the injuries documented objectively without speculation.

Prescription: Any prescription must be based on the exact clinical scenario supplied; I would write the generic drug, dose, route, frequency and duration and check it before signing.

🔎 How to Perform / Approach

  1. Step 1 — Observe safely: Inspect the labelled specimen, container, photograph or scenario without directly handling an unknown corrosive.
  2. Step 2 — Identify the corrosive: State whether it represents a strong acid or alkali and name it if sufficient information is provided.
  3. Step 3 — Establish the exposure: Clarify whether the case involves ingestion, accidental contact or deliberate throwing of a corrosive substance.
  4. Step 4 — Present vitriolage systematically: State circumstances, suspected agent, exposed body sites, visible injuries and important clinical findings.
  5. Step 5 — Relate it to forensic practice: Document findings objectively and preserve relevant containers, clothing or other material according to medicolegal procedure.
  6. Step 6 — Address immediate clinical needs: Prioritize removal from exposure and copious water irrigation of affected skin or eyes; do not attempt chemical neutralization.
  7. Step 7 — Complete prescription if asked: Choose treatment appropriate to the supplied clinical scenario and write drug, dose, route, frequency, duration, date and signature.

Safety: Do not smell, taste or directly touch an unidentified corrosive. In corrosive ingestion, do not induce vomiting or attempt acid–alkali neutralization.

🖼️ Visual Learning

VISUAL 1

Corrosive Poison Identification and Vitriolage Case Presentation

 

📝 Important Viva Questions

1. What is meant by a corrosive poison?

Answer: A corrosive is a substance capable of producing chemical destruction of tissues on contact, commonly a strong acid or strong alkali.

2. What is vitriolage?

Answer: Vitriolage is the deliberate throwing of a corrosive substance, classically acid, onto another person with resulting chemical injury.

3. Name three common strong acids encountered as corrosives.

Answer: Sulfuric acid, nitric acid and hydrochloric acid.

4. What should you avoid after corrosive ingestion?

Answer: Do not induce vomiting and do not attempt to neutralize an acid with an alkali or an alkali with an acid.

5. What are the important forensic steps in a suspected vitriolage case?

Answer: Document the history and injuries objectively and preserve relevant material such as the suspected corrosive container and contaminated clothing according to medicolegal procedure.

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