The brain is enclosed within the rigid skull along with blood and cerebrospinal fluid. An increase in the volume of any of these components may raise the pressure inside the skull. This pressure is known as intracranial pressure or ICP. A dangerous increase in ICP can reduce blood flow to the brain, compress important structures and cause further neurological injury. It may occur suddenly following a severe head injury, stroke or ruptured brain aneurysm. It may also be associated with brain tumours, infections or swelling. Apollo Adlux Hospital provides intracranial pressure monitoring as part of advanced neurocritical care for appropriately selected patients.

What Is Intracranial Pressure Monitoring?

ICP monitoring is a method used to continuously or intermittently measure pressure inside the skull. In critically ill patients, a small pressure-sensing device may be placed through the skull into or near the brain. The device sends pressure readings to a bedside monitor. This information allows the neurocritical care team to:

•            Observe changes in brain pressure
•            Identify sudden increases in ICP
•            Assess response to treatment
•            Guide ventilation and medication strategies
•            Support decisions regarding cerebrospinal fluid drainage
•            Evaluate cerebral perfusion

The type of monitoring device selected depends on the patient’s condition.

Why Is Increased ICP Dangerous?

The skull cannot expand significantly. If pressure rises, the brain may become compressed. Persistently elevated ICP can lead to:

•            Reduced oxygen delivery to brain tissue
•            Reduced cerebral blood flow
•            Worsening brain swelling
•            Loss of consciousness
•            Seizures
•            Permanent neurological injury
•            Brain herniation
•            Life-threatening complications

Early recognition and treatment are therefore important.

Who May Require ICP Monitoring?

ICP monitoring may be considered in selected patients with:

•            Severe traumatic brain injury
•            Brain swelling
•            Intracranial bleeding
•            Subarachnoid haemorrhage
•            Large stroke
•            Hydrocephalus
•            Brain tumours causing pressure
•            Central nervous system infections
•            Acute liver failure with cerebral oedema
•            Reduced consciousness with suspected raised ICP
•            Complications following brain surgery

Not every patient with headache or increased pressure symptoms requires invasive monitoring. The decision is made by the neurosurgeon or neurointensivist.

Types of Intracranial Pressure Monitoring

Intraventricular Catheter

A catheter may be placed inside one of the brain’s ventricles.

It can:

•           Measure intracranial pressure
•           Drain excess cerebrospinal fluid
•           Assist with pressure management
•           Allow sampling in selected situations

Intraparenchymal Monitor

A small sensor may be inserted directly into brain tissue to provide pressure readings.

Subdural or Epidural Monitoring

A sensor may be placed between the skull and the brain coverings in selected circumstances.

Each technique has specific advantages, limitations and risks.

How Is the Procedure Performed?

ICP monitor placement is generally performed under sterile conditions in an operating room or critical care setting. The procedure may involve:

1.         Cleaning and preparing the scalp
2.         Administering anaesthesia or sedation
3.         Creating a small opening in the skull
4.         Placing the monitoring catheter or sensor
5.         Connecting the device to a bedside monitor
6.         Securing the device and applying a sterile dressing

The patient is monitored closely throughout the process.

How Does ICP Monitoring Guide Treatment?

ICP readings are evaluated alongside:

•            Neurological examination
•            CT or MRI findings
•            Blood pressure
•            Oxygen levels
•            Carbon dioxide levels
•            Body temperature
•            Cerebral perfusion pressure
•            Laboratory results

If intracranial pressure rises, treatment may include:

•            Positioning the head appropriately
•            Sedation and pain control
•            Mechanical ventilation adjustments
•            Medicines to reduce brain swelling
•            Cerebrospinal fluid drainage
•            Seizure management
•            Temperature control
•            Surgery to remove a blood clot or mass
•            Decompressive surgery in selected cases

Treatment is individualised according to the cause of raised pressure.

Risks of ICP Monitoring

Possible risks include:

•            Infection
•            Bleeding
•            Injury to brain tissue
•            Device blockage or malfunction
•            Cerebrospinal fluid leakage
•            Incorrect readings
•            Seizures

The benefits and risks are carefully assessed before insertion.

Signs of Raised Intracranial Pressure

Symptoms may include:

•            Severe or worsening headache
•            Vomiting
•            Drowsiness
•            Confusion
•            Reduced consciousness
•            Weakness
•            Seizures
•            Unequal pupils
•            Changes in vision
•            Abnormal breathing

A person who develops these symptoms after a head injury requires urgent medical attention.

ICP Monitoring at Apollo Adlux Hospital

At Apollo Adlux Hospital, ICP monitoring is supported by a multidisciplinary team of neurointensivists, neurosurgeons, neurologists, emergency physicians, anaesthesiologists and specialised Neuro ICU nurses. Advanced imaging, emergency neurosurgery, mechanical ventilation, invasive monitoring and rehabilitation services are available within an integrated care pathway. Patients requiring traumatic brain injury care, brain pressure monitoring or advanced Neuro ICU treatment in Kochi can access comprehensive neurocritical care at Apollo Adlux Hospital.