Stroke treatment in A&E: the costs of delay and misdiagnosis

When someone suffers a stroke, every minute matters. Most patients arrive at Accident and Emergency (A&E) after a sudden onset of symptoms such as facial drooping, arm weakness, or speech difficulties, often recognised using the FAST test (Face, Arms, Speech, Time).

Some are brought in by ambulance after a 999 call, while others may attend with family members who sense something is wrong. Ideally, pre-hospital teams alert the emergency department in advance, enabling staff to prepare for rapid assessment. This early warning is imperative because effective stroke treatments are extremely time sensitive.

Once in A&E, a suspected stroke patient should be triaged immediately as a medical emergency. Clinical staff will quickly assess vital signs, perform a neurological examination, and establish the exact time symptoms began. This onset time is crucial, as certain treatments can only be given within a narrow window. A well-functioning department will have stroke protocols in place, ensuring that patients are fast-tracked for urgent assessment by specialist clinicians.

Delays at this stage can significantly impact outcomes, increasing the risk of long-term disability or death. As part of our series exploring stroke-related medical negligence cases, this article looks at how negligent care in A&E can have far-reaching consequences and outlines the steps you can take if you believe you or a family member have received substandard treatment.

Investigations play a central role in diagnosing and managing stroke. Patients should receive urgent brain imaging, usually a CT scan, to distinguish between an ischaemic stroke (caused by a clot) and a haemorrhagic stroke (caused by bleeding). Blood tests, ECGs, and sometimes more advanced imaging such as CT angiography may also be performed. The purpose of these investigations is to guide critical treatment decisions, such as whether thrombolysis (clot-busting medication) or thrombectomy (mechanical clot removal) is appropriate. In good-quality care, these steps happen swiftly, often within minutes to an hour of arrival.

Once results are available, clinicians must make rapid and complex decisions. For ischaemic strokes, timely administration of thrombolysis can dramatically improve recovery if given within the recommended timeframe. Patients with large vessel occlusions may benefit from urgent transfer for thrombectomy. For haemorrhagic stroke, different interventions, such as blood pressure control or neurosurgical referral, are required. These decisions demand accuracy, speed, and clear communication between emergency staff, radiologists, and stroke specialists. Any delays, misinterpretation, or failure to escalate care can have serious consequences.

Common failings in A&E when treating stroke patients often relate to delay, misjudgement, and breakdowns in systems designed to prioritise speed. Because stroke treatment is so time-critical, even relatively short delays can lead to significantly worse outcomes.

Failure to recognise stroke symptoms promptly

One of the most serious issues arises when A&E staff fail to identify that a patient is having a stroke. While some strokes present clearly, others involve more subtle symptoms, such as dizziness, confusion, visual disturbance, or mild weakness, which may be misattributed to less serious conditions. In these situations, significant errors can occur:

• patients may be incorrectly triaged as non-urgent;
• symptoms may be dismissed as migraine, intoxication, or anxiety;
• critical time may be lost before appropriate assessment begins.

A failure to recognise stroke at the point of entry into A&E can mean that the patient misses the window for thrombolysis or thrombectomy, leading to avoidable long-term disability.

Delayed triage and initial assessment

Even when stroke is suspected, delays in triage can have devastating consequences. A good standard of care requires suspected stroke patients to be treated as a time-critical emergency, often requiring immediate prioritisation.

Failings in this area can include:

• long waiting times before being seen by a clinician;
• failure to activate stroke alert protocols;
• overcrowding or understaffing leading to delays in assessment.

In some cases, patients have remained in waiting areas or corridors while their condition deteriorated, something that should never occur in properly managed stroke care.

Delays in brain imaging

Urgent brain imaging (usually a CT scan) is essential to confirm the type of stroke and guide treatment. National guidelines typically require imaging to be carried out within a very short timeframe (often within one hour of arrival at A&E) for eligible patients.

Common failures include:

• delays in requesting the scan;
• limited access to imaging equipment or radiology staff;
• delays in interpreting scan results.

These delays are particularly serious because treatment decisions cannot be safely made without imaging. Missing the treatment window due to slow scanning is one of the most frequent grounds for negligence concerns.

Failure to administer time-sensitive treatments

Even when diagnosis is made, some patients do not receive appropriate treatment quickly enough, or at all.

Examples include:

• failure to administer thrombolysis within the eligible timeframe;
• delayed referral for thrombectomy where appropriate;
• lack of escalation to a stroke specialist.

These treatments can significantly reduce brain damage if delivered promptly. A delay or omission can mean the difference between recovery and permanent disability.

Poor communication and handover

Stroke care requires coordinated teamwork between A&E staff, radiologists, stroke specialists, and sometimes neurosurgical teams. Poor communication can disrupt this chain.

Failures may include:

• incomplete or inaccurate recording of symptom onset time;
• poor handover between ambulance and hospital teams;
• delayed discussion with stroke specialists.

If key information is lost or unclear, it can directly affect treatment eligibility and timing.

Inadequate monitoring and deterioration management

Stroke patients can deteriorate quickly. A&E staff are responsible for monitoring vital signs and neurological status while awaiting diagnosis or transfer.

Problems can arise where:

• patients are not regularly observed;
• changes in condition are not acted upon;
• escalation protocols are not followed.

Failure to respond to deterioration can lead to preventable complications or worsening outcomes.

Systemic issues: understaffing and overcrowding

In many cases, failings are not due to a single error but reflect wider systemic pressures within A&E departments.

These include:

• staff shortages leading to delayed care;
• overcrowded departments reducing capacity to prioritise emergencies;
• lack of access to specialist stroke teams outside normal hours.

While these challenges are widely recognised, they do not excuse substandard care where harm results.

How we can help in claims for negligent A&E stroke care

If you or a loved one has suffered harm due to delays, misdiagnosis, or inadequate treatment for a stroke in A&E, you are entitled to seek legal advice. Specialist medical negligence solicitors can review what happened, assess whether care fell below acceptable standards, and help you pursue compensation where appropriate. Beyond financial recovery, bringing a claim can also highlight systemic issues and drive improvements in patient safety. If you have questions about the care you received, seeking expert legal guidance could be an important first step towards understanding your rights and securing the support you need.

We are always happy to talk through your concerns without obligation or cost, and our specialist team will provide clear advice on both the merits of a claim and what would be involved in the investigation and claims process.

Please email us at piclinnegstrokeclaims@penningtonslaw.com or call us on 0800 328 9545.

Penningtons Manches Cooper’s medical negligence team includes a specialist group of lawyers with extensive experience in claims involving strokes that should have been avoided and/or better managed with appropriate medical care.