Table 5. Summary of Studies Addressing Postoperative Pain [10, 11, 13, 18, 20, 22].

Studies	Drugs	Clinical variable - pain
Lauta et al, 2010 [11]	Sevoflurane/remifentanil vs. propofol/remifentanil	No statistical difference
Guy et al, 1997 [10]	Remifentanil vs. fentanyl	No statistical difference
Talke et al, 2002 [13]	Propofol vs. isoflurane vs. propofol/isoflurane	No statistical difference
Gerlach et al, 2003 [18]	Remifentanil/propofol vs. sufentanil/propofol	No statistical difference
Van der Zwan et al, 2005 [22]	Remifentanil/piritramide vs. fentanyl	Remifentanil - more pain postoperatively Not statistically significant
Djian et al, 2006 [20]	Remifentanil vs. sufentanil	Remifentanil - greater use of morphine postoperatively (P = 0.016)