Course Content
🔬 Station 1 — Identification of Normal Blood Cells on Peripheral Smear
Learning Outcomes Identify normal RBCs, WBCs and platelets on a provided peripheral blood smear/image. Differentiate the major blood-cell lineages using their morphological features.
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Identification of Normal Blood Cells on Peripheral Smear
🔴 Station 2 — Abnormal RBC Morphology & Identification of Anemia
Learning Outcomes Differentiate normal from abnormal red blood cells on a peripheral smear. Identify common abnormal RBC shapes. Suggest the likely type of anemia from the provided RBC morphology.
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Abnormal RBC Morphology & Identification of Anemia
💊 Station 3 — Prescription Writing for Iron-Deficiency Anemia
Learning Outcomes Write an appropriate prescription for a patient at risk of developing iron-deficiency anemia. Select an appropriate iron preparation and provide clear instructions for its use.
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Prescription Writing for Iron-Deficiency Anemia
🩸 Station 4 — Safe Blood Transfusion & Recognition of Transfusion Reactions
Learning Outcomes Demonstrate the essential safety checks required before blood transfusion. Identify common transfusion reactions from a supplied clinical scenario. Describe the appropriate immediate response when a transfusion reaction is suspected.
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Safe Blood Transfusion & Recognition of Transfusion Reactions
⚪ Station 5 — Identification of White Blood Cells on Peripheral Smear
Learning Outcomes Identify the major types of white blood cells on a provided peripheral smear. Differentiate neutrophils, eosinophils, basophils, lymphocytes and monocytes using morphology. Recognize a smear demonstrating leukocytosis.
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Identification of White Blood Cells on Peripheral Smear
🔬 Station 6 — Microscopic Examination of Human and Animal Blood
Learning Outcomes Perform/interpret microscopic examination of provided human and animal blood specimens or images. Differentiate human from animal blood using the supplied microscopic features.
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Microscopic Examination of Human and Animal Blood
🔦 Station 7 — Examination of Blood Stains Under Ultraviolet Light
Learning Outcomes Demonstrate the correct approach to examination of a suspected blood stain using ultraviolet light. Recognize findings suggestive of a blood stain on the supplied material.
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Examination of Blood Stains Under Ultraviolet Light
🩸 Station 8 — Identification of Blood-Stain Patterns
Learning Outcomes Identify different blood-stain patterns from supplied specimens/images. Differentiate the presented patterns on the basis of their gross appearance.
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Identification of Blood-Stain Patterns
💉 Station 9 — EPI Vaccination, Route & Cold-Chain Assessment
Learning Outcomes Identify vaccines included in the Pakistan EPI schedule from provided material. Identify the appropriate route of administration of selected vaccines. Demonstrate/describe correct vaccine storage and maintenance of the cold chain. Recognize important contraindications to vaccination.
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EPI Vaccination, Route & Cold-Chain Assessment
🧪 Station 10 — Interpretation of Coagulation Tests
Learning Outcomes Interpret PT and APTT from provided laboratory results. Interpret bleeding time and clotting time. Use the pattern of abnormalities to identify the likely defect in hemostasis.
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Interpretation of Coagulation Tests
🩸🔬 AIM OSPE/OSCE Lab — Blood & Immunology-II Module | 3rd Year MBBS

AIM OSCE / OSPE • MBBS

🩸 Station 4 — Safe Blood Transfusion & Recognition of Transfusion Reactions

Rapid Revision • Practical Skills • Viva

🎯 Task

CANDIDATE TASK

You are provided with a patient identification band, compatibility documentation, a unit of blood and brief clinical scenarios occurring during transfusion. Demonstrate the essential pre-transfusion safety checks, identify the likely transfusion reaction in each scenario and state your immediate response to a suspected reaction.

⚡ Model Station Answer

What to say in the exam

Safety: I would confirm the prescription and consent, positively identify the patient and match the patient’s identifiers with the compatibility documentation and blood unit. I would check the blood group, unit number, expiry and inspect the bag for leaks, clots or abnormal discoloration.

Recognition: Fever/rigors may indicate a febrile, haemolytic or septic reaction; urticaria suggests allergy; hypotension with airway or breathing difficulty suggests anaphylaxis; acute respiratory distress may represent TRALI or circulatory overload depending on the clinical findings.

Immediate response: I would stop the transfusion immediately, maintain IV access with compatible crystalloid through appropriate tubing, assess ABC, call for senior help, recheck identification and inform the transfusion laboratory while monitoring and investigating the patient according to local protocol.

🔎 Stepwise Procedure / Approach

  1. Prepare safely. Perform hand hygiene, confirm the transfusion prescription, indication and documented consent, and obtain baseline observations.
  2. Positively identify the patient. Ask the conscious patient to state identifying details and compare these with the identification band and transfusion documentation.
  3. Perform the bedside compatibility check. Match the patient’s identifiers with the compatibility label/report and the blood unit; check ABO/Rh compatibility as specified by local policy.
  4. Check the blood unit. Confirm the unique donation/unit number and expiry date/time and inspect the bag for leakage, clots, abnormal discoloration or damage.
  5. Start and monitor correctly. Ensure suitable IV access and blood administration equipment, commence according to institutional policy and observe the patient particularly closely during the early part of the transfusion.
  6. Recognize a possible reaction. Look for new fever, rigors, flushing, rash, itching, dyspnoea, wheeze, chest/back pain, hypotension, tachycardia or other acute deterioration.
  7. Stop blood immediately if a reaction is suspected. Do not continue the unit while deciding whether the symptoms are significant. Maintain IV access with an appropriate compatible fluid and assess airway, breathing and circulation.
  8. Escalate and recheck. Call for senior clinical assistance, repeat vital signs and urgently recheck the patient’s identity, compatibility documentation and blood unit.
  9. Notify and investigate. Inform the transfusion laboratory/blood bank and send the blood unit, giving set and patient samples when requested according to local transfusion-reaction protocol.
  10. Treat, monitor and document. Manage the specific reaction as directed, continue reassessment and accurately document the event, observations, actions and communications.
Critical OSCE action: When a transfusion reaction is suspected, the first action is to STOP THE TRANSFUSION. Do not simply slow the transfusion.
Reaction clues: Urticaria/itching → allergic reaction • Wheeze, airway swelling or shock → anaphylaxis • Fever/rigors with pain, hypotension or haemoglobinuria → consider acute haemolytic reaction • Marked fever/rigors and shock → consider bacterial contamination/sepsis • Acute hypoxaemia with bilateral pulmonary infiltrates without circulatory overload → consider TRALI • Dyspnoea with hypertension, raised JVP or pulmonary oedema → consider TACO.

🖼️ Visual Learning

VISUAL 1

Safe Blood Transfusion Checks & Rapid Recognition of Reactions

🎥 Practical Video

Administering a Blood Transfusion — Educational Demonstration
Source: MSF Academy for Healthcare • Médecins Sans Frontières

This practical demonstration shows preparation and administration of a blood unit and reinforces the safety sequence students should recognize during a transfusion station.

▶ Watch Practical Video

📝 Important Viva Questions

Q1. What is the most important bedside safety check before starting a blood transfusion?

Answer: Positive patient identification and exact matching of the patient, compatibility documentation and labelled blood unit before administration.

Q2. What should you inspect on the blood bag before transfusion?

Answer: Check the unit number, blood-group compatibility and expiry, and inspect for leakage, damage, clots or abnormal discoloration.

Q3. What is your first action if you suspect an acute transfusion reaction?

Answer: Stop the transfusion immediately. Then assess the patient, maintain appropriate IV access and obtain urgent clinical assistance.

Q4. What findings suggest an acute haemolytic transfusion reaction?

Answer: Fever, rigors, back/flank or chest pain, hypotension, tachycardia and haemoglobinuria may occur, particularly with an incompatible transfusion.

Q5. How does a simple allergic reaction commonly present?

Answer: It usually presents with pruritus, flushing or urticaria without major respiratory or cardiovascular compromise.

Q6. How can TACO be distinguished clinically from TRALI?

Answer: TACO is associated with circulatory overload such as hypertension, raised JVP and pulmonary oedema, whereas TRALI causes acute hypoxaemic respiratory distress without evidence of circulatory overload.

Q7. What should be done with the blood unit after a significant suspected reaction?

Answer: Do not discard it routinely. Notify the transfusion laboratory and retain/send the blood bag, administration set and appropriate patient samples according to the local transfusion-reaction protocol.

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