Why Is It Especially Important for the Nurse to Determine

Why is it especially important for the nurse to determine the patient's current use of medications during the preoperative assessment?

A) These medications may alter the patient's perceptions about surgery.
B) Anaesthetics alter renal and hepatic function,causing toxicity by other drugs.
C) Other medications may cause interactions with anaesthetics,altering the potency and effect of the drugs.
D) Routine medications are usually withheld the day of surgery,requiring dosage and schedule adjustments.