MRCOG Part 3 OSCE: How to Prepare for the 14 Tasks

MRCOG Part 3 is a different kind of exam to Part 1 and Part 2. There is no question bank to grind through in the same way. You are being assessed on clinical reasoning, communication, and professionalism in real time, in front of an examiner. It rewards a completely different style of preparation, and most candidates who struggle with it are strong clinicians who simply have not practised the exam format itself.

The Exam Format

Part 3 consists of 14 tasks, 12 minutes each, and the first 2 minutes of each are your reading time. It runs over two sittings a year (May and November). Tasks fall into three broad types:

• Patient tasks: a simulated patient (played by an actor) presenting with a clinical scenario. You take a history, counsel, or manage the consultation.
• Colleague tasks: a simulated interaction with another healthcare professional: handover, escalation, breaking bad news to a colleague, or a difficult conversation.
• Structured discussions: a direct conversation with the examiner about a clinical scenario, an audit, a governance issue, or an ethical dilemma. No actor involved.

There are five marking domains: Patient Safety, Communication with Patients and their Relatives, Communication with Colleagues, Information Gathering, and Applied Clinical Knowledge. Each task is assessed against three or four of them, never all five. Examiners are working through a structured marking scheme, not forming a general impression, which means there are specific things they need to hear you say or do to award marks.

What Actually Gets Marked

The single biggest gap between candidates who pass and candidates who narrowly fail is not clinical knowledge. It is making the safety-relevant steps explicit. Confirming patient identity out loud. Stating you are checking for allergies. Naming the guideline you are following. Examiners cannot award marks for things you know but do not say.

• Patient safety: identity checks, allergy checks, escalation to seniors when appropriate, red-flag recognition stated explicitly.
• Communication with patients and relatives: plain language (no unexplained jargon), checking understanding, inviting questions.
• Communication with colleagues: structured handover tools like SBAR, clear escalation, agreeing who does what.
• Information gathering: a systematic history that covers what is actually relevant to the scenario, not a generic template recited from memory.
• Applied clinical knowledge: correct management with a clear rationale, referencing the relevant RCOG Green-top Guideline or NICE guidance by name where appropriate.

How to Prepare

Practise out loud, not in your head

Reading a model answer is not the same skill as producing one under time pressure while managing a simulated patient's emotional state. You need to rehearse full tasks, out loud, against the clock, ideally with someone playing the other role and giving you feedback against the marking domains above.

Know your emergency algorithms cold

Shoulder dystocia (HELPERR), major obstetric haemorrhage, eclampsia management, cord prolapse and maternal collapse all need to be automatic. A colleague or patient task built around an emergency is testing whether you can execute a known algorithm under pressure, not whether you can reason one out from scratch.

Use one shape for every structured discussion

For governance and audit discussions, use a consistent structure every time: describe the standard, present the findings, interpret them against the standard, propose an action plan, and describe how you would re-audit. Examiners are listening for this shape even when the specific scenario changes.

Do not neglect the "soft" tasks

Breaking bad news and consent tasks are not lower-stakes than clinical management ones. They carry the same marks. Practise your opening lines for breaking bad news (warning shot, checking what the patient already knows, pausing after delivering the news) until they are second nature.

Common Mistakes

• Rushing to management before gathering information. Examiners want to see your reasoning, not just your conclusion.
• Talking at the patient instead of with them. Checking understanding and inviting questions is worth real marks.
• Forgetting to escalate. Many scenarios are testing whether you know your own limits and when to call a senior.
• Running out of time mid-task. Once the 2 minutes' reading is over, ten minutes goes fast. Practise pacing so you reach a clear management plan before time is called.

Final Thoughts

Part 3 rewards deliberate practice of the exam format itself, not just clinical competence. You already have the clinical competence, or you would not have reached this stage. Rehearse tasks out loud, structure your discussions consistently, and make every safety-relevant step explicit rather than assumed. That is the difference that shows up in the mark sheet.