Which of the following reflects the intended use of EEG and SSEP in neuroprognostication?

• A. They must determine the outcome.
• B. They may be considered.
• C. They replace all other prognostic data.
• D. They are not used in modern practice.

Answer: (B)

In neuroprognostication after cardiac arrest, EEG and SSEPs are used as part of a multimodal assessment to inform likely outcomes, not to decide them alone. They provide objective data that can support prognosis, but they must be interpreted in the context of timing and potential confounders such as sedation, temperature management, and metabolism. For EEG, certain patterns (like severely suppressed or burst-suppressed activity) can suggest poor prognosis but are not definitive by themselves if patients are heavily sedated or cooled. For SSEPs, bilaterally absent N20 responses strongly indicate poor outcome when measured after the appropriate interval and after accounting for confounders, yet the presence of N20 does not guarantee a good outcome. Because these tests contribute meaningful information while requiring context and other prognostic data, they may be considered rather than used as sole determinants or replacements for other data.