May 3, 2026 Neurosurgery

Why Early Surgery Matters in Chronic Subdural Haematoma (cSDH)

Chandan
Written by Chandan
Why Early Surgery Matters in Chronic Subdural Haematoma (cSDH)

Understanding the Importance of Timely Treatment in Brain Bleeding Conditions

Chronic subdural haematoma (cSDH) is one of the most common neurosurgical conditions affecting older adults. Although symptoms can initially appear mild, delayed treatment may significantly impact recovery, mobility, independence, and long-term neurological outcomes.

A recent multicentre UK study involving more than 1,000 patients highlighted a crucial finding: delays in surgery for symptomatic chronic subdural haematoma are associated with worse functional outcomes.

At Spine Focus UK, Mr. Taofiq Desmond Sanusi, Consultant Neurosurgeon and Complex Spine Surgeon, provides advanced assessment and evidence-based management for complex neurological and spinal conditions, including chronic subdural haematoma.


What Is a Chronic Subdural Haematoma?

A chronic subdural haematoma is a collection of old blood and blood breakdown products that accumulate between the brain’s surface and its outer covering (the dura).

This condition most commonly develops after:

  • Minor head injuries
  • Falls
  • Trauma in older adults
  • Blood thinning medication use
  • Age-related brain shrinkage

In many cases, patients may not even remember the original injury.

Unlike acute bleeding, chronic subdural haematomas usually develop gradually over days or weeks. As pressure builds around the brain, symptoms can slowly worsen.


Common Symptoms of Chronic Subdural Haematoma

Symptoms vary depending on the size of the bleed and pressure on the brain.

Common symptoms include:

  • Persistent headaches
  • Confusion or memory problems
  • Difficulty walking or balance issues
  • Weakness on one side of the body
  • Speech difficulties
  • Personality changes
  • Excessive sleepiness
  • Reduced mobility
  • Falls
  • Seizures

Because symptoms can resemble dementia, stroke, or general ageing, diagnosis is sometimes delayed.


Why Timing Matters

One of the key findings from the recent UK multicentre study was that every additional day of delay before surgery increased the risk of poorer recovery.

Researchers analysed outcomes from 1,015 patients treated surgically across five major UK neurosurgical centres over an 11-year period.

The study found:

  • Patients with delayed surgery had worse functional outcomes
  • Surgical delay increased the risk of disability after treatment
  • The risk increased progressively with each passing day
  • Even patients with relatively mild symptoms were affected by delays

The authors demonstrated that the probability of an unfavourable outcome increased steadily as time to surgery increased.


Key Findings From the Study

1. Delayed Surgery Was Linked to Poorer Recovery

Patients who experienced worse outcomes had significantly longer waits before surgery compared with those who recovered well.

The study showed:

  • Average delay in favourable outcomes: approximately 2.9 days
  • Average delay in poorer outcomes: approximately 4.4 days

Although this difference may appear small, it had measurable consequences for recovery and independence.

2. Risk Increased Day by Day

Researchers found a linear increase in poor outcomes with surgical delay.

This means:

  • The longer surgery was postponed
  • The greater the risk of disability
  • Reduced mobility and impaired neurological recovery

Importantly, this relationship remained significant even after adjusting for age, frailty, and neurological severity at presentation.

3. Even “Mild” Cases Can Deteriorate

One particularly important finding was that patients with relatively mild neurological symptoms were still negatively affected by delayed surgery.

This challenges the assumption that stable or mildly symptomatic patients can safely wait extended periods for intervention.

The study suggests that earlier treatment may improve recovery even in patients who initially appear neurologically well.


Why Do Delays Happen?

Blood-Thinning Medication

Patients taking aspirin, clopidogrel, warfarin, or anticoagulants often experience delays because clinicians may need to temporarily reverse or manage bleeding risk before surgery.

The study found that antiplatelet medication was one of the strongest contributors to delayed treatment.

Older Age and Frailty

Older patients may require additional medical optimisation before surgery. However, the research emphasised that age alone should not justify unnecessary delays.

Resource and Transfer Delays

In some cases, patients require transfer to specialist neurosurgical units for treatment. Operating theatre availability, imaging delays, or hospital capacity issues can also contribute.


How Is Chronic Subdural Haematoma Treated?

Treatment depends on symptom severity, neurological condition, imaging findings, and overall patient health.

Conservative Management

Small haematomas without significant symptoms may sometimes be monitored with repeat imaging, neurological assessment, and observation.

Surgical Treatment

For symptomatic patients, surgery is often the preferred treatment.

Burr Hole Drainage

Small holes are created in the skull to drain accumulated blood and relieve pressure.

Mini-Craniotomy

In selected cases, a slightly larger opening may be needed to remove thicker collections.

The majority of patients in the study underwent burr hole drainage.


What Happens After Surgery?

Many patients experience significant improvement following surgery, particularly when treatment occurs promptly.

Recovery may include:

  • Improved mobility
  • Better balance
  • Clearer thinking
  • Improved speech
  • Reduced headaches

However, recovery varies depending on age, neurological status before surgery, overall health, and how long the brain was under pressure.


The Importance of Specialist Neurosurgical Assessment

Chronic subdural haematoma can sometimes appear deceptively mild at first presentation.

Specialist assessment is essential to determine:

  • Whether surgery is required
  • How urgently treatment is needed
  • The safest management approach

At Spine Focus UK, patients benefit from advanced neurosurgical expertise, evidence-based treatment planning, minimally invasive surgical approaches where appropriate, and comprehensive neurological assessment.


Research and Academic Contribution

Mr. Taofiq Desmond Sanusi contributed to the multicentre UK study examining surgical timing and outcomes in chronic subdural haematoma patients.

The research provides important evidence supporting earlier intervention, improved referral pathways, and timely neurosurgical care for symptomatic patients.


When Should You Seek Medical Attention?

Urgent medical assessment is important if you or a loved one develops:

  • Worsening headaches
  • Confusion
  • Weakness
  • Speech problems
  • Balance difficulties
  • Drowsiness after a head injury

Symptoms may develop gradually over days or weeks.

Early diagnosis and specialist treatment can significantly improve outcomes.


Expert Neurosurgical Care at Spine Focus UK

Spine Focus UK provides specialist assessment and treatment for complex neurological and spinal conditions, including:

  • Chronic subdural haematoma
  • Spinal disorders
  • Minimally invasive spinal surgery
  • Robotic spine surgery
  • Chiari malformation
  • Spinal tumours
  • Cerebrospinal fluid disorders

Led by Mr. Taofiq Desmond Sanusi, Consultant Neurosurgeon and Complex Spine Surgeon, the practice focuses on precision, evidence-based care, and patient-centred treatment.


Research Article

Read the full research publication here:

View Research Article on ResearchGate

Chandan
About the Author

Chandan

Leave a Reply

Your email address will not be published. Required fields are marked *

WhatsApp Spine Focus, London