8.3 Prescriber Interventions, Ethical Dilemmas & Professional Judgement

8.3 Prescriber Interventions, Ethical Dilemmas & Professional Judgement

Quick Reference: Advanced OSCE stations evaluate a candidate's clinical assertiveness, communication with healthcare professionals, and ethical decision-making. Candidates must identify dangerous prescribing errors, contact General Practitioners or consultants using the SBAR framework, de-escalate patient conflict, and resolve complex ethical dilemmas under pressure while upholding the PSI Code of Conduct.

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1. Prescriber Intervention Stations & High-Risk Error Detection

Prescriber intervention stations simulate scenarios where a candidate discovers a severe prescribing error, contraindication, or drug interaction on a prescription presented for dispensing. The candidate must analyze the clinical risk and telephone the prescriber (roleplayed by an examiner or actor) to resolve the issue.

Common High-Risk OSCE Prescribing Errors

1. Methotrexate Frequency Error: Methotrexate prescribed daily instead of ONCE WEEKLY for rheumatoid arthritis or psoriasis. Clinical Risk: Fatal bone marrow suppression, severe gastrointestinal ulceration, and systemic toxicity.
2. Penicillin Allergy Mismatch: Co-amoxiclav, Amoxicillin, or Augmentin prescribed to a patient with a documented severe (anaphylactic) penicillin allergy. Clinical Risk: Anaphylactic shock.
3. Clarithromycin + Simvastatin Interaction: Co-prescribing clarithromycin (a potent CYP3A4 inhibitor) with simvastatin. Clinical Risk: Massive elevation of simvastatin plasma levels leading to severe rhabdomyolysis and acute renal failure.
4. DOAC Overdosing in Renal Impairment: Full-dose Rivaroxaban (20mg daily) or Dabigatran (150mg BD) prescribed to a patient with an eGFR of 20 mL/min. Clinical Risk: Drug accumulation and major life-threatening hemorrhage.
5. 10-Fold Paediatric Dosing Error: Misplacement of decimal point in paediatric liquid antibiotic or paracetamol calculations (e.g., 50mL instead of 5mL).

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2. Standardized Inter-Professional Communication: The SBAR Framework

When contacting a doctor, hospital registrar, or nurse practitioner during an OSCE station, candidates must structure their verbal conversation using the SBAR framework to ensure concise, professional, and impactful communication.

+-----------------------------------------------------------------------------------+
|                         SBAR INTER-PROFESSIONAL COMMUNICATION MODEL                |
+-----------------------------------------------------------------------------------+
| S | Situation      | Identify yourself, your pharmacy, the patient, and the       |
|   |                | immediate urgent reason for your call.                       |
+---+----------------+--------------------------------------------------------------+
| B | Background     | Provide concise relevant history: patient age, diagnosis,    |
|   |                | renal function, allergies, current medication regimen.       |
+---+----------------+--------------------------------------------------------------+
| A | Assessment     | State your clinical analysis of the problem and explain the  |
|   |                | specific patient safety risk or hazard involved.              |
+---+----------------+--------------------------------------------------------------+
| R | Recommendation | Offer a clear, evidence-based alternative solution, dose      |
|   |                | adjustment, or alternative agent immediately.                 |
+--------------------+--------------------------------------------------------------+

Verbatim SBAR Prescriber Telephone Script

Situation: "Hello Dr. O'Connor, my name is Niamh Kelly, the supervising pharmacist at St. Mary's Pharmacy. I am calling regarding patient John Murray, date of birth 14th of June 1958. I have received a prescription for Methotrexate 10mg tablets today, but I have a major safety concern before I can dispense it."

Background: "Mr. Murray has been prescribed Methotrexate 10mg tablets with directions stating 'Take one tablet daily'. Our pharmacy records confirm he is initiating treatment for rheumatoid arthritis, and his recent blood panel shows normal renal function."

Assessment: "Methotrexate for non-oncological conditions like rheumatoid arthritis must be administered ONCE WEEKLY, not daily. If Mr. Murray takes 10mg daily, he is at extreme risk of developing life-threatening bone marrow toxicity and severe mucosal ulceration within days."

Recommendation: "I recommend amending the prescription directions to Methotrexate 10mg ONCE WEEKLY, specifying a set day of the week such as every Monday. Additionally, I recommend co-prescribing Folic Acid 5mg taken once weekly on a different day, such as Friday. If you agree, I can amend the record once you send an updated electronic prescription."

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3. Conflict De-escalation & Managing Difficult Patient Interactions

OSCE stations frequently test soft skills by introducing angry, demanding, or distressed simulated patients (e.g., a patient furious about a dispensing delay, or demanding non-prescription codeine products).

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|                        FIVE-STEP CONFLICT DE-ESCALATION PROTOCOL                  |
+-----------------------------------------------------------------------------------+
| Step 1 | Active Listening   | Maintain open posture, eye contact, do not interrupt.|
| Step 2 | Validate & Empathize| Acknowledge frustration without taking attacks personally.|
| Step 3 | Calm Low Tone      | Speak slowly and quietly; lower voice volume.         |
| Step 4 | Jargon-Free Reason | Explain safety/legal checks in plain terms.           |
| Step 5 | Actionable Solution| Provide realistic options and clear next steps.       |
+-----------------------------------------------------------------------------------+

De-escalation Phrasing Examples

• Acknowledging Frustration: "I can completely understand why you are frustrated about waiting extra time today when you are feeling unwell, Mr. Davis."
• Explaining Safety Checks (Non-Defensive): "My top priority as your pharmacist is ensuring that this medication is 100% safe for you to take with your other heart medicines. I need just a few minutes to confirm this calculation with your GP so that we protect your health."
• Refusing Inappropriate Solpadeine / Nurofen Plus Requests: "I hear that your headache is severe, but taking codeine continuously for more than 3 days actually causes rebound medication-overuse headaches and carries a high risk of dependence. Because of this safety concern, I cannot supply Solpadeine today, but I can recommend a safer alternative combination of paracetamol and ibuprofen, or arrange a prompt GP appointment for you."

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4. Ethical Dilemmas & PSI Code of Conduct Application

Candidates must navigate complex ethical scenarios by applying the core principles of the Pharmaceutical Society of Ireland (PSI) Code of Conduct.

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|                     PSI CODE OF CONDUCT - 5 CORE ETHICAL PRINCIPLES              |
+-----------------------------------------------------------------------------------+
| Principle 1 | Patient Interest First | Main obligation is patient health and safety.|
| Principle 2 | Professional Judgment | Exercise independent, evidence-based care.  |
| Principle 3 | Honor & Integrity      | Maintain public trust and professional dignity.|
| Principle 4 | Duty of Candour        | Be open, honest, and transparent when errors occur.|
| Principle 5 | Patient Confidentiality| Safeguard sensitive medical information.    |
+-----------------------------------------------------------------------------------+

Classic OSCE Ethical Dilemmas & Resolution Pathways

Dilemma A: Emergency Supply Request Without Prescription

• Scenario: A diabetic patient on holiday forgot their insulin glargine pen on a Saturday evening when all local GP surgeries are closed.
• Ethical & Legal Balance: Under Irish Medicinal Products (Prescription and Control of Supply) Regulations, a pharmacist can emergency-supply a prescription-only medicine if there is an immediate need, it is impractical to obtain a prescription, the drug has previously been prescribed, and the dose is known.
• Resolution: Perform safety checks, verify previous supply on the PCRS system or patient risk history, supply a minimum necessary quantity (e.g., 1 pen), document the emergency supply in the prescription register, and advise GP notification.

Dilemma B: Handling a Dispensing Error (Duty of Candour)

• Scenario: A patient returns to the pharmacy stating they were given Gliclazide 80mg instead of the prescribed Glimepiride 2mg.
• Resolution Protocol:
  1. Immediate Patient Welfare: Check if the patient ingested the wrong drug; assess for hypoglycemia symptoms. Offer immediate glucose treatment/medical evaluation if needed.
  2. Duty of Candour Disclosure: Apologize sincerely and openly without shifting blame: "I am deeply sorry that you were given the incorrect medication. This was our error, and I am taking immediate steps to ensure your safety and correct it."
  3. Corrective Action & Supply: Issue the correct prescribed medication immediately.
  4. Incident Documentation: Record the event in the pharmacy Incident Log, conduct a Root Cause Analysis (RCA), and notify the PSI if severe harm occurred per regulatory guidelines.