Figure 5. Two-dimensional graphs for postoperative pain
intensity at rest at 24h and the incidence of PONV.
1=placebo; 2=S (+)-ketamine; 3=ketamine; 4=amantadine; 5=magnesium
sulphate; 6=pregabalin; 7=dexmedetomidine; 8=butorphanol; 9=ibuprofen;
10=flurbiprofen+dexmedetomidine; 11=flurbiprofen+butorphanol;
12=naloxone; 13=buprenorphine; 14=flurbiprofen; 15=nalbuphine;
16=S(+)-ketamine+methadone; 17=ACTZ.
Table 1. Characteristics of studies