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 7 — Nutrition Models: Protein-Calorie Malnutrition, Food Plate, Food Pyramid, Fortification and Adulteration

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

🎯 Candidate Task

Examine the nutrition models or images provided, identify them and state their important distinguishing features and public-health significance. Explain food fortification and adulteration and, if a clinical prescription scenario is supplied, construct the appropriate prescription.

⚡ Model Station Answer

Protein-calorie malnutrition: The two classic models are marasmus and kwashiorkor. Marasmus shows severe wasting with loss of subcutaneous fat and no nutritional oedema, whereas kwashiorkor is characterized by bilateral pitting oedema with skin/hair changes and muscle wasting.

Public-health importance: Protein-calorie malnutrition increases childhood morbidity, mortality, impaired growth and susceptibility to infection and therefore requires prevention, early detection and nutritional intervention.

Food model: My Food Plate demonstrates the major food groups and relative proportions of a balanced meal; the food pyramid presents food groups according to their recommended relative intake.

Fortification: Deliberate addition of essential nutrients to food to prevent or correct population deficiency. Adulteration: Addition, substitution or removal of substances that reduces food quality, purity or safety.

Prescription: If a clinical scenario is provided, I would select treatment appropriate to that specific patient and write the generic drug or nutritional preparation, dose, route, frequency and duration before signing.

🔎 How to Perform / Approach

  1. Step 1 — Identify the model: Decide whether the station shows protein-calorie malnutrition, a food plate/pyramid, fortification or adulteration.
  2. Step 2 — Assess malnutrition morphology: Look specifically for wasting, loss of subcutaneous fat, oedema and characteristic skin or hair changes.
  3. Step 3 — Differentiate the two models: Severe wasting without oedema favours marasmus; bilateral nutritional oedema with wasting and characteristic skin/hair changes favours kwashiorkor.
  4. Step 4 — Interpret the dietary model: Identify the food groups and explain their relative contribution to a balanced diet.
  5. Step 5 — Define the food-process concept: Distinguish intentional beneficial nutrient addition in fortification from harmful or fraudulent alteration in adulteration.
  6. Step 6 — State public-health relevance: Relate malnutrition and food quality to growth, disease prevention and population health.
  7. Step 7 — Prescribe only from the supplied scenario: Select the appropriate therapy and write the complete prescription without inventing clinical details not provided.

 

📝 Important Viva Questions

1. What is the major clinical difference between marasmus and kwashiorkor?

Answer: Marasmus is dominated by severe wasting without nutritional oedema, whereas kwashiorkor characteristically has bilateral pitting oedema along with muscle wasting.

2. Why is protein-calorie malnutrition important in public health?

Answer: It contributes to impaired growth, increased susceptibility to infection, childhood morbidity and mortality and therefore represents an important preventable public-health problem.

3. What is food fortification?

Answer: Food fortification is the deliberate addition of essential micronutrients to food to prevent or correct nutritional deficiencies in a population.

4. What is food adulteration?

Answer: Food adulteration is the addition, substitution, abstraction or contamination of food in a manner that reduces its purity, quality or safety.

5. What are the main components of the My Food Plate model?

Answer: The main groups are vegetables, fruits, grains and protein foods, with dairy represented separately; the model demonstrates the relative proportions of a balanced meal.

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