Anticoagulated client who hit their head: why looking well is not enough

First action: baseline neuro assessment and prompt report

After making the client safe where they fell, the nurse establishes a neurological baseline: level of consciousness or Glasgow Coma Scale, orientation, pupil size and reaction, speech, and strength in each limb, together with vital signs. Ask about headache, nausea, whether the client lost consciousness or remembers the fall, and which anticoagulant was taken and when.

Then notify the provider promptly rather than waiting for symptoms. Public guidance advises people who take blood thinners to seek urgent help after any head injury, which reflects how differently this group is managed. The provider decides on imaging, blood tests and any reversal plan; the nurse's job is to make sure that decision is made early, with accurate findings.

Why anticoagulation changes the picture

A small strike can tear fragile vessels between the brain and skull. Normally clotting limits this bleeding; on an anticoagulant it can continue, so a client who looks well at first may deteriorate hours later as a haematoma grows. Older adults, people with brain atrophy and those on antiplatelet or anticoagulant drugs are also more likely to develop chronic subdural haematomas.

Chronic subdural bleeding develops gradually over weeks and may present with headache, sleepiness, confusion, focal weakness or seizures. Some older adults underestimate or forget the original fall entirely. That is why the general post-fall routine is not enough here: this client needs an earlier escalation and a plan for watching both short-term and later changes.

Ongoing monitoring and what to escalate

Repeat neuro checks at the frequency the provider or protocol sets and compare each result with the baseline. Report a headache that worsens, repeated vomiting, increasing drowsiness, confusion, slurred speech, unequal pupils, new weakness or numbness, or a seizure without delay. Hypertension with bradycardia and irregular breathing is a late sign of rising intracranial pressure, not an early one.

Before giving the next anticoagulant dose, confirm with the provider whether it should be given. Avoid sedating medicines that would mask a change in consciousness unless prescribed after review. An assistant can measure vital signs and report them, but the nurse performs and interprets the neurological assessment. At discharge, teach the client and family which delayed symptoms to report.

Information the provider needs from the nurse

A useful report names the anticoagulant, the time of the last dose, the mechanism of the fall, whether the head was struck, any loss of consciousness or memory gap, the neurological baseline and vital signs. Mention other medicines that affect bleeding and any recent changes to the client's alertness before the fall, which may suggest the fall itself was caused by a neurological event.

If imaging is ordered, the nurse coordinates safe transport and continues neuro checks before and after. If bleeding is found, the provider directs reversal and specialist referral, and the nurse prepares for close neurological monitoring. If imaging is clear, the plan for repeat observation still follows provider orders, since some bleeds become visible or symptomatic later.

Working a hypothetical priority question

Imagine a hypothetical 78-year-old client on an oral anticoagulant who slips in the bathroom and bumps her forehead. She is alert, oriented and says she feels fine apart from a small bruise. The options are documenting the fall and continuing routine care, completing a neuro assessment and notifying the provider, giving acetaminophen and rechecking next shift, or helping her back to bed.

Completing the neuro assessment and notifying the provider is best because anticoagulation raises the risk of delayed intracranial bleeding even when the client is asymptomatic. Documentation follows the clinical response. Waiting until the next shift could miss early deterioration, and putting her back to bed without assessment treats the fall as a mobility event rather than a possible bleed.

Sources and further reading

NHS: Head injury and concussion. Seeking urgent help after head injury when taking blood thinners; vomiting as a warning sign.

MSD Manual Professional: Traumatic brain injury. Subdural haematoma risk with anticoagulants and atrophy, gradual presentation, GCS and pupil monitoring, late signs of raised ICP.

CDC: Signs and symptoms of traumatic brain injury. Danger signs after TBI: worsening headache, repeated vomiting, weakness, slurred speech, unequal pupils, confusion.