External Ventricular Drains After Subarachnoid Hemorrhage: Is Less More?

Area of Science:

• Neurosurgery
• Critical Care Medicine
• Neurology

Background:

• External ventricular drains (EVDs) are crucial for managing hydrocephalus and intracranial pressure post-subarachnoid hemorrhage (SAH).
• EVD management impacts patient outcomes, including ventriculitis, delayed cerebral ischemia, shunt requirements, and length of stay.
• Current neurological ICU practices often favor continuous EVD drainage, diverging from evidence supporting early clamp trials.

Purpose of the Study:

• To review the literature comparing different external ventricular drain management strategies.
• To analyze the arguments for and against early clamp trials versus continuous drainage.
• To provide evidence-based recommendations for optimal EVD management.

Main Methods:

• Literature review and synthesis of existing studies on EVD management.
• Analysis of clinical outcomes associated with different EVD drainage protocols.
• Comparison of evidence-based practices with current clinical surveys.

Main Results:

• Evidence supports early clamp trials and intermittent cerebrospinal fluid (CSF) drainage for EVDs.
• Continuous EVD drainage is prevalent in neurological ICUs despite conflicting evidence.
• Early clamp trials and intermittent drainage may reduce EVD complications and length of stay.

Conclusions:

• An early clamp trial and intermittent CSF drainage approach appears safe and beneficial for EVD management.
• A significant gap exists between evidence-based recommendations and current clinical practice.
• Multicenter prospective studies are essential to determine optimal EVD management strategies.