TIA Emergency Management

Clinical Scenario

Robert Clarke, 64, attends with his daughter who is worried about an episode yesterday. Robert was reading the newspaper when he suddenly could not understand the words. He tried to speak and his words came out jumbled. The episode lasted approximately 15 minutes and resolved completely. Robert thinks it was nothing and his daughter is overreacting. His PMH includes atrial fibrillation (on warfarin), hypertension, hypercholesterolaemia, and type 2 diabetes (HbA1c 62). His most recent INR was 2.1.

What This Case Tests

Recognising classical TIA features (aphasia with complete resolution); understanding that TIA is a medical emergency with high early stroke risk; initiating immediate management per NICE guidelines; navigating a third-party consultation where the patient minimises the event; assessing and optimising existing vascular risk factor management.

Common Mistakes Trainees Make

The three most common mistakes are: treating TIA as a non-urgent condition that can be investigated routinely (TIA is a stroke emergency — the risk of completed stroke is highest in the first 48 hours), accepting the patient's minimisation and not insisting on urgent assessment, and not assessing the adequacy of existing anticoagulation — Robert is on warfarin for AF, but his INR of 2.1 may not have been consistently in range, and his HbA1c of 62 suggests suboptimal diabetic control.

The Consultation Challenge

This is a medical emergency presenting as a non-event in the patient's mind. Robert's episode — sudden-onset receptive and expressive aphasia lasting 15 minutes with complete resolution — is a classical TIA involving the dominant hemisphere (likely middle cerebral artery territory). The risk of a completed stroke in the 48 hours following a TIA is approximately 5-10%.

Robert does not want to be here. He thinks his daughter is overreacting. The consultation has a third-party dynamic where the daughter is the concerned party and the patient is minimising. You must take the daughter's account seriously while engaging Robert respectfully.

Start by hearing both perspectives. Ask the daughter to describe exactly what she observed, then ask Robert what he remembers. TIA patients often under-report because the symptoms have resolved. The daughter's witness account is often more reliable.

Apply the ABCD2 score: Age ≥60 (yes, 1 point), BP ≥140/90 (check now), Clinical features of TIA (speech disturbance without unilateral weakness, 1 point), Duration ≥60 minutes (no, 0), Diabetes (yes, 1 point). Even moderate scores require urgent assessment. With Robert's existing AF, hypertension, diabetes, and hypercholesterolaemia, his vascular risk is already high.

The management is clear per NICE: if the TIA occurred within the last 7 days (it was yesterday), Robert needs urgent referral to a TIA clinic or acute stroke service within 24 hours. He should receive aspirin 300mg immediately (unless contraindicated — check warfarin interaction). His INR needs checking today. Imaging (CT or MRI brain, carotid Doppler) will be arranged by the TIA service.

Robert's existing management needs review: is his warfarin consistently therapeutic? His HbA1c of 62 is above target — tighter glycaemic control reduces stroke risk. His statin dose may need optimising. Antihypertensive medication should be reviewed.

The challenge is convincing a reluctant patient that this is urgent. Be direct: "Robert, I understand you feel fine now, and I'm glad the episode has resolved. But what happened yesterday — losing your ability to read and speak — is actually a warning sign that you're at risk of a stroke in the next few days. This is the body's alarm system going off, and we need to act on it today."

Time check: Spend the first 3 minutes hearing both accounts. By minute 5, make the TIA diagnosis and explain the urgency. Initiate immediate management by minute 8 (aspirin, INR check, urgent referral). Use the remaining time to review existing risk factor management and convince Robert to attend the urgent assessment.

How Examiners Mark This Case

Data Gathering and Diagnosis: Examiners assess whether you take a focused neurological history establishing the TIA features: sudden onset, focal neurological deficit (aphasia), transient duration with complete resolution, and vascular risk factor profile. They look for whether you use the witness account (daughter) as the primary data source given Robert's minimisation, and whether you perform a basic neurological assessment and blood pressure check.

Clinical Management and Medical Complexity: Heavily weighted. Examiners expect: immediate aspirin 300mg (unless contraindicated), urgent referral to TIA clinic within 24 hours, INR check today, and a plan to review and optimise existing vascular risk management (anticoagulation adequacy, glycaemic control, statin dose, antihypertensive review). A trainee who treats this as a routine referral will lose significant marks.

Relating to Others: Examiners assess whether you can convince a reluctant patient of the urgency without being dismissive or alarming, whether you engage respectfully with both Robert and his daughter, and whether you explain the stroke risk in terms that make Robert take it seriously. The daughter should feel her concerns were validated, and Robert should leave understanding why urgent action is needed.

Example Opening

Strong opening: "Hello Robert, and hello — I understand you're Robert's daughter? Thank you both for coming in. Robert, I can see you think this might be a waste of time, but I'd really like to hear what happened yesterday. Can your daughter start by telling me what she saw, and then I'll ask you what you remember?"

When conveying urgency to a reluctant patient: "Robert, I know you feel fine right now, and that's actually good news. But what you described — suddenly not being able to understand words or speak properly — is your brain's warning system telling us there's a problem with the blood supply. The risk of a full stroke is highest in the next 48 hours. I need to get you seen urgently today, not because I want to worry you, but because acting fast can prevent something much more serious."

Avoid: "It's probably nothing but we should check just in case." (Undermines the urgency and allows the patient to defer).

How This Appears in the SCA

TIA is a high-stakes SCA case testing your ability to recognise a neurological emergency when the patient presents well. The urgency of the condition combined with the patient's minimisation creates a clinical and communication challenge. Examiners assess whether you insist on urgent management despite the patient's reluctance.

Key Statistic

The risk of stroke in the first 48 hours after a TIA is approximately 5-10%. FAST (Face, Arms, Speech, Time) assessment helps identify stroke/TIA in the community. Urgent assessment and treatment within 24 hours reduces the subsequent stroke risk by approximately 80%.

Relevant Guidelines

• NICE NG128: Stroke and transient ischaemic attack in over 16s — diagnosis and initial management
• NICE CG68: Stroke and TIA — secondary prevention guidelines.

Frequently Asked Questions

How do I recognise TIA features in the SCA?

TIA presents as sudden-onset focal neurological deficit that resolves completely, usually within minutes to hours. Common presentations include: unilateral weakness or numbness, speech disturbance (aphasia or dysarthria), visual loss (amaurosis fugax or hemianopia), and ataxia. The key features are: sudden onset (seconds), focal (affecting a specific neurological function), and transient (complete resolution). If symptoms are ongoing, treat as an acute stroke (999).

What is the immediate management of TIA in primary care?

Aspirin 300mg immediately (unless contraindicated or already on anticoagulation — in which case check INR urgently), urgent referral to TIA clinic within 24 hours if the event occurred in the last 7 days, blood pressure measurement, blood glucose check, and INR if on warfarin. Do not wait for the TIA clinic to initiate aspirin. If the patient is already anticoagulated, the priority is checking the INR is therapeutic and referring urgently.

Why is TIA considered an emergency if the symptoms have resolved?

The risk of a completed stroke following TIA is approximately 5-10% in the first 48 hours and up to 20% in the first 90 days. TIA is essentially a stroke that the brain recovered from — it indicates active, unstable vascular disease. Urgent assessment and treatment (antiplatelet therapy, risk factor management, carotid imaging) reduces subsequent stroke risk by approximately 80%. Delay is dangerous.

How do I manage a patient who minimises a TIA?

Be direct but respectful. Explain the mechanism in plain language: "Your brain temporarily lost its blood supply yesterday. It recovered quickly, which is why you feel fine now. But the same thing could happen again more severely if we don't act." Use the witness account to reinforce the seriousness. Frame urgent assessment as protective, not alarming: "Getting seen quickly is actually the best way to prevent something worse from happening."

Should I give aspirin to a patient already on warfarin who has a TIA?

This requires careful clinical judgment. If the INR is sub-therapeutic (below 2.0), the anticoagulation may not be adequately preventing thromboembolism — adding aspirin while optimising the INR may be appropriate. If the INR is therapeutic (2.0-3.0), the TIA may have occurred despite adequate anticoagulation, which suggests a different mechanism or the need for specialist review. Check the INR urgently and discuss with the TIA clinic. Do not add aspirin to therapeutic anticoagulation without specialist guidance.