period time = menses?

Context:

liposuction preoperative notice :
1 female patients have to avoid period time.
2 taking a bath the day before surgery
3 no smoking and drinking 2weeks before surgery .
4 anticoagulant ,medicine (e.g.aspirin)should not be used for aminimum 2weeks before surgery .
5 no water for over 4hours and no food at least 10hours before taking sleeping-anaesthesia and 2V-anaesthesia.