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 6 — Identification of Irritant, Metallic, Non-Metallic, Vegetable and Animal Poisons

4th Year • GIT / Hepatobiliary • Rapid Revision • Spotter Identification • Viva

🎯 Candidate Task

Examine the specimen, model or spotter provided. Identify the poison and state whether it belongs to the irritant, metallic, non-metallic, vegetable or animal poison category.

⚡ Model Station Answer

Identification: I would identify the specimen from its characteristic appearance or supplied label.

Classification: I would then classify it into the appropriate major group: metallic, non-metallic, vegetable or animal poison.

Examples: Arsenic and mercury are metallic poisons; phosphorus is a non-metallic poison; castor and Abrus are vegetable poisons; snake venom represents an animal poison.

Conclusion: I would state the exact poison first, followed by its correct poison category.

🔎 How to Perform / Approach

  1. Step 1 — Observe: Inspect the specimen, container, plant material, model or image carefully without assuming the diagnosis.
  2. Step 2 — Look for identifying features: Note characteristic colour, shape, seed or plant morphology, physical state or recognizable animal source.
  3. Step 3 — Identify the poison: State the specific poison or specimen shown.
  4. Step 4 — Classify it: Place it into the appropriate metallic, non-metallic, vegetable or animal poison category.
  5. Step 5 — Differentiate similar spotters: Use the dominant visible feature rather than relying only on colour or container appearance.
  6. Step 6 — Present clearly: Give one concise examination response: “This is ___; it is classified as a ___ poison.”
Exam tip: In a spotter station, answer in two parts: name the poison → state its category. Do not give a long toxicology lecture unless specifically asked.

🖼️ Visual Learning

VISUAL 1

Recognition of Major Poison Categories

 

📝 Important Viva Questions

1. Give two examples of metallic poisons.

Answer: Arsenic and mercury are common examples of metallic poisons.

2. Give one example of a non-metallic poison.

Answer: Phosphorus is a commonly recognized non-metallic poison in forensic toxicology.

3. How can Abrus precatorius seeds be recognized in a spotter?

Answer: They are characteristically small, bright red seeds with a distinct black marking at one end.

4. Which toxic substance is associated with castor seeds?

Answer: Castor seeds contain ricin, a highly toxic plant protein.

5. What should your final response be in a poison identification spotter?

Answer: State the specific poison or specimen and immediately classify it into the appropriate major poison category.

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