In general, PONV is highest in women (with a 2-3 times increased risk) and particularly after procedures such as gynecological surgery, laparoscopy, thyroidectomy and breast surgery.5, 21-35 A study by Sinclair and group found that patients undergoing breast augmentation experienced an 8-10 fold higher incidence of PONV than patients undergoing other types of plastic surgery.26 Similar incidences were found in other studies of 48% to 68% of PONV in patients undergoing mastectomies, breast reconstruction, and implantation.36-40