An older patient is scheduled for a CT scan with and without contrast dye. What should be done prior to this CT scan?
1. Monitor renal function.
2. Assess for level of responsiveness.
3. Assess vital signs.
4. Keep the patient NPO.
Correct Answer: 1
Common nephrotoxins associated with acute tubular necrosis include radiologic contrast media. The risk for acute tubular necrosis is higher when nephrotoxic drugs are given to older patients. Monitoring responsiveness and vital signs are important, but do not address the specific risks of this examination. The specific location of the body for the CT scan is not indicated, therefore, it is not known if the patient would need to be kept NPO prior to the test.
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