The head nurse is evaluating the knowledge of a student nurse while teaching confirmatory tests for brain death. Which statement made by the student nurse does the head nurse correct?
1. "Inject technetium within 30 minutes of brain death during nuclear imaging."
2. "Obtain readings for at least 30 minutes during electroencephalography."
3. "Obtain x-ray images between 30 and 60 minutes and at 2 hours after injection during nuclear imaging."
4. "Use eight scalp electrodes with a distance of 5 centimeters between each during electroencephalography."
4
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