original_query: What are the special instructions that physicians may have for patients undergoing this test?
query: What special instructions might physicians give patients before or after a cystoscopy?
answer: Before the procedure, patients might need to provide a urine sample to check for infection and might be prescribed antibiotics or other medications.  After the procedure, instructions may include drinking plenty of water, taking a warm bath, or applying a warm compress to the urethral opening to relieve discomfort.