Guidelines for Catheter Management of Intracranial Pressure (ICP)

Indications for ICP Monitoring

The American Heart Association recommends ICP monitoring for patients with Glasgow Coma Scale (GCS) score of 8 or less, clinical evidence of transtentorial herniation, or significant intraventricular hemorrhage (IVH) or hydrocephalus 1, 2, 3
ICP monitoring should be considered for patients with supratentorial intracerebral hemorrhage (ICH), particularly in younger patients 3
The European Society of Intensive Care Medicine suggests that ICP monitoring should be part of protocol-driven care in patients at risk of elevated intracranial pressure based on clinical and/or imaging features 4

Ventricular catheters (VC) are preferred over parenchymal monitors when safe and practical for patients with hydrocephalus, as they allow for both ICP monitoring and cerebrospinal fluid (CSF) drainage 1, 2, 3, 4
Parenchymal catheters (PC) allow for ICP monitoring only, without CSF drainage 1, 2

Before insertion of any monitoring device, evaluate the patient's coagulation status and consider platelet transfusion for patients on prior antiplatelet therapy, and reverse coagulopathy in patients on warfarin 1, 2, 3
Standard insertion and maintenance protocols should be followed to ensure safety and reliability 4

Target a cerebral perfusion pressure (CPP) of 50-70 mmHg, depending on the status of cerebral autoregulation 1, 2, 3
First-tier interventions for elevated ICP include head of bed elevation to 30° with head midline, analgesia and sedation, and maintaining adequate cerebral perfusion pressure 5, 6
CSF drainage via ventricular catheter is recommended for hydrocephalus 1, 2, 3, 6
Avoid corticosteroids as they should not be administered for treatment of elevated ICP in ICH 3

ICP should be continuously assessed, including waveform quality, using a structured protocol 4
Instantaneous ICP values should be interpreted in context of monitoring trends, CPP, and clinical evaluation 4
While refractory ICP elevation strongly predicts mortality, ICP alone is not a useful prognostic marker of functional outcome 4

Hydrocephalus is associated with poor outcomes in ICH patients and is present in approximately 55% of patients with IVH 1, 2, 3
The decision to use ventricular versus parenchymal monitoring should be based on whether there is a need to drain CSF to treat hydrocephalus or elevated ICP 1, 3
Differential pressure gradients may exist in ICH, with ICP elevated near the hematoma but not distant from it 1, 2, 8
Patients with small hematomas and limited IVH usually will not require treatment to lower ICP 2, 8