A nurse teaches a client who is scheduled for a positron emission tomography scan of the brain. Which statement should the nurse include in this client's teaching?
a. "Avoid caffeine-containing substances for 12 hours before the test."
b. "Drink at least 3 liters of fluid during the first 24 hours after the test."
c. "Do not take your cardiac medication the morning of the test."
d. "Remove your dentures and any metal before the test begins."
ANS: A
Caffeine-containing liquids and foods are central nervous system stimulants and may alter the test results. No contrast is used; therefore, the client does not need to increase fluid intake. The client should take cardiac medications as prescribed. Metal does not have to be removed; this is done for magnetic resonance imaging.
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