TOW Apfel score for PONV

4 risk factors of PONV

- female,

-non smoker

-h/o PONV/motion sickness

-post op opioid use

2 risk factors: 1

3 risk factors or more: 2 antiemetic

4 risk factors: consider changing anaesthetic : TIVA/ RA?

http://www.aafp.org/afp/2007/0515/p1537.html#afp20070515p1537-t1