A Patient Is Scheduled for a Myelogram Before Having Spinal

A patient is scheduled for a myelogram before having spinal fusion surgery. What instructions does the nurse provide in advance of this test?

A) Shower with antiseptic soap.
B) Take nothing by mouth for 4 hours before the test.
C) Take an over-the-counter analgesic before arriving for the test.
D) Restrict the intake of caffeine products for 24 hours before the test.