Point-of-Care EEG in the ICU: Clinical Applications, Limitations, and Future Directions

Based on an educational webinar presented by Dr. Armin Jewell, Neurologist and Epileptologist from Allina Health in Minnesota, for the Neurocritical Care Society.

As point-of-care EEG (POC EEG) becomes increasingly integrated into emergency and critical care, clinicians are asking an important question: Where does this technology fit into modern neurologic practice?

During a recent Neurocritical Care Society webinar, Dr. Armin Jewell, neurologist and epileptologist in Minneapolis, Minnesota, provided an evidence-based overview of point-of-care EEG, comparing it with conventional EEG while reviewing its clinical applications, current limitations, and future potential. From rapid seizure detection to emerging uses in stroke, traumatic brain injury, delirium, and post-cardiac arrest care, the webinar emphasized both the opportunities and the appropriate clinical role of this evolving technology.

What Is a Point-of-Care EEG?

Point-of-care EEG (POC EEG) technology was developed to address the logistical, technical, and workflow limitations of conventional EEG in managing acute neurological conditions. While conventional EEG remains the gold standard for assessing brain activity, it requires a trained EEG technologist, specialized monitoring equipment, and hospital infrastructure – all of which can delay EEG acquisition when rapid clinical decisions are needed.

Introduced around 2018, point-of-care EEG systems typically use simplified and limited electrode arrays – usually disposable headbands or headsets designed for rapid bedside application – to capture clinically relevant EEG data within minutes. By simplifying deployment and eliminating the need for a dedicated EEG technologist for placement, POC EEG expands access to timely neurological monitoring in emergency departments, intensive care units (ICUs), and other acute care in both rural and urban settings.

Checklist of Key Features of Point-of-Care EEG

• Typically uses a reduced electrode montage (some systems provide full-head coverage)
• Can be applied by any trained healthcare provider – no dedicated EEG technologist required
• Rapid bedside setup
• Disposable, single-use electrodes
• AI seizure detection algorithm

One of the biggest workflow advantages highlighted by Dr. Jewell is that electrode placement no longer depends on an EEG technologist. After appropriate training, physicians, nurses, advanced practice providers, and other healthcare professionals can apply many point-of-care EEG systems, allowing monitoring to begin significantly sooner than traditional EEG workflows.

Different Types of Point-of-Care EEG Systems

Dr. Jewell emphasized that not all point-of-care EEG systems are the same. Current technologies range from simplified headband systems with a limited electrodes (8-12 channels) to full-head 19-channels headset that provide broader scalp coverage using a configuration similar to the traditional 10–20 system.

Both limited-montage and full-head POC EEG systems are designed to help clinicians evaluate patients with suspected seizures and support timely diagnosis. Limited-montage systems provide rapid assessment for seizure detection and triage, while full-head systems offer comprehensive brain coverage and are well suited for continuous monitoring and evaluation of a broader range of seizure types and focal abnormalities. Understanding these differences helps clinicians select the approach that best fits their patient population and clinical workflow.

Why Choose Point-of-Care EEG Over Conventional EEG?

“The goal is to provide the EEG information clinicians need to make earlier treatment decisions.”

Dr. Jewell highlighted several advantages of point-of-care EEG, particularly in time-sensitive neurological emergencies. Across multiple published studies, POC EEG consistently reduced the time required to initiate EEG monitoring compared with conventional EEGs, allowing clinicians to obtain critical neurological information much sooner.

Earlier monitoring may also translate into meaningful clinical and economic benefits. Studies reviewed during the webinar demonstrated reductions in interfacility patient transfers, shorter hospital and ICU stays, and overall cost savings. Dr. Jewell cited a cohort study by Ward et al., which estimated savings of approximately $14,000 per patient annually.

Perhaps most importantly, earlier EEG acquisition can directly influence patient management. As discussed during the webinar, rapid EEG significantly affected treatment decisions in patients with suspected nonconvulsive status epilepticus (NCSE) by helping clinicians start the treatment faster.

When to Use Point-of-Care EEG

Dr. Jewell reviewed several clinical scenarios where point-of-care EEG can provide meaningful value by supporting rapid neurological assessment and earlier clinical decision-making.

Suspected Nonconvulsive Status Epilepticus (NCSE)

One of the primary indications for point-of-care EEG is the rapid evaluation of patients with unexplained altered mental status and suspected NCSE. Dr. Jewell emphasized that POC EEG is particularly valuable for confirming ongoing seizure activity or helping exclude seizures as the cause of neurological deterioration.

Stroke

In patients presenting with acute stroke or stroke-like symptoms, point-of-care EEG can help determine whether seizure activity is contributing to altered mental status or neurological deficits, complementing – but not replacing – neuroimaging.

Traumatic Brain Injury (TBI)

Dr. Jewell reviewed emerging evidence supporting the use of point-of-care EEG in patients with traumatic brain injury. Rapid EEG may assist with early neurological assessment, seizure detection, prognostication, and even future prehospital applications.

Post–Cardiac Arrest

Continuous EEG plays an established role following cardiac arrest, and point-of-care EEG may provide valuable early neurological information.

Delirium

Emerging research suggests that EEG may help identify characteristic brain activity associated with ICU delirium. Dr. Jewell reviewed early studies evaluating point-of-care EEG and AI-assisted algorithms as potential tools for more objective delirium assessment.

Limitations of Point-of-Care EEG

Like any diagnostic technology, point-of-care EEG has important limitations that clinicians should understand.

Reduced Electrode Coverage

Many point-of-care EEG systems use a reduced electrode array rather than the full 10–20 International System used in conventional EEG. While this simplified design enables rapid bedside setup, it also captures electrical activity from fewer areas of the brain. As a result, certain seizure types—particularly brief, focal, low-burden, or parasagittal seizures—may not be detected. For this reason, a negative point-of-care EEG should not be interpreted as definitively ruling out seizure activity. When clinical suspicion remains high, conventional continuous EEG is still recommended for a more comprehensive evaluation.

AI Is a Screening Tool

AI-assisted seizure detection is a valuable feature of many point-of-care EEG systems, but it has important limitations. According to Dr. Jewell, current algorithms tend to favor detecting high overall seizure burden rather than isolated or brief seizure events. As a result, AI is best used as a screening tool that helps identify patients who may need urgent attention. Physician review remains essential to confirm the findings and ensure that subtle seizures or other clinically significant EEG abnormalities are not missed.

“AI is a clinical decision-support tool, but physician interpretation remains essential.”

False Positives and False Negatives

Motion artifact, muscle activity, poor electrode contact, and electrical interference can affect EEG recordings and occasionally result in inaccurate AI alerts. Dr. Jewell emphasized that automated findings should always be interpreted within the clinical context.

10 Key Takeaways from Dr. Jewell’s Presentation

• Point-of-care EEG enables rapid detection of NCSE and high seizure burden.
• It is best suited for detecting sustained or generalized seizure activity.
• A negative point-of-care EEG does not rule out seizures.
• It should be viewed as a triage tool and used to guide escalation to continuous EEG when appropriate.
• AI-assisted seizure alerts are helpful but do not replace clinical interpretation.
• Point-of-care EEG is especially valuable in community and resource-limited hospitals.
• EEG artifacts are common and should always be recognized during interpretation.
• Early EEG findings can meaningfully influence both the escalation and de-escalation of antiseizure therapy.
• Point-of-care EEG can identify important EEG patterns beyond seizures, including burst suppression in selected patients.
• Expert review remains essential when EEG findings are equivocal or clinical suspicion remains high.

Frequently Asked Questions About Point-of-Care EEG