Description
Bedside neurosurgical procedures are high-impact emergency interventions performed in critically ill patients who cannot safely be transported to the operating theatre. They are most commonly carried out in intensive care units, emergency departments, or high-dependency units, where continuous monitoring, ventilatory support, and immediate post-procedural care are available. The primary goal is rapid stabilization of neurological or airway compromise, often within minutes to hours of deterioration. These procedures require advanced technical expertise, strict aseptic technique, and careful coordination with critical care teams.
A key procedure in this category is External Ventricular Drain (EVD) insertion, which is used to manage elevated intracranial pressure caused by conditions such as traumatic brain injury, intracranial hemorrhage, hydrocephalus, or post-neurosurgical swelling. The EVD system allows controlled drainage of cerebrospinal fluid (CSF), thereby reducing pressure on brain tissue and preventing secondary brain injury. It also enables continuous intracranial pressure monitoring, which is essential for guiding further treatment decisions. Despite being life-saving, the procedure carries risks such as infection (ventriculitis), hemorrhage, and catheter misplacement, making precision and sterile handling critical.
Another important bedside intervention is lumbar puncture (LP) and lumbar drain placement. A lumbar puncture is primarily diagnostic, used to analyze CSF in suspected meningitis, encephalitis, subarachnoid hemorrhage, and inflammatory neurological disorders. It can also be therapeutic in conditions like idiopathic intracranial hypertension, where CSF removal temporarily relieves pressure. A lumbar drain, on the other hand, provides continuous CSF diversion and is often used in postoperative neurosurgical patients, particularly after skull base surgeries, to manage CSF leaks and reduce intracranial pressure fluctuations. Both procedures require careful assessment of contraindications such as raised intracranial pressure with mass effect, where LP could be dangerous.
The Ommaya reservoir placement is a specialized neurosurgical technique used for long-term intraventricular access. It involves implanting a catheter into the cerebral ventricles connected to a subcutaneous reservoir, typically positioned under the scalp. This system allows direct delivery of chemotherapy, antibiotics, or other medications into the central nervous system. It is especially useful in patients with leptomeningeal metastases or brain tumors, where systemic drug delivery is limited by the blood-brain barrier. The advantages include reduced need for repeated lumbar punctures and more consistent drug distribution, although risks include infection, blockage, and device malfunction.
Tracheostomy is another critical bedside procedure frequently performed in neurocritical care settings. It involves creating a direct airway through the anterior neck into the trachea, usually in patients requiring prolonged mechanical ventilation or those with impaired airway protection due to neurological injury such as stroke, traumatic brain injury, or coma. Compared to prolonged endotracheal intubation, tracheostomy improves patient comfort, facilitates weaning from ventilators, and allows better airway toileting. However, it carries potential complications such as bleeding, tracheal stenosis, infection, and accidental decannulation.
Overall, bedside neurosurgical procedures form an essential pillar of emergency neurocritical care. Their value lies in speed, accessibility, and the ability to stabilize life-threatening neurological conditions without delay. When performed efficiently and safely, these interventions not only reduce mortality but also improve long-term neurological outcomes by preventing secondary brain injury, ensuring adequate cerebral perfusion, and enabling timely transition to definitive surgical or medical management.
Consultant Neurosurgeon