Table 4. Studies Addressing Postoperative Hemodynamic Recovery [7, 10-14, 16, 17, 19, 20, 24, 30, 38].

Studies	Drugs	Clinical variable	Results
Lauta et al, 2010 [11]	Sevoflurane/remifentanil vs. propofol/remifentanil	HR MAP	No statistical difference Sevo/Remi - more hypotension episodes (P = 0.0167)
Ravussin et al, 1991 [24]	Thiopental/isoflurane vs. propofol	HR, MAP CPP	No statistical difference Lower in propofol group
Todd et al, 1993 [12]	Propofol/fentanyl vs. isoflurane/nitrous oxide vs. fentanyl/nitrous oxide	ICP MAP HR	Iso/N2O - higher ICP, HR, lower MAP The difference is not statistically significant
Guy et al, 1997 [10]	Remifentanil vs. fentanyl	SBP ICP, CPP	Higher in fentanyl group P = 0.004 No statistical difference
Talke et al, 2002 [13]	Propofol vs. isoflurane vs. propofol/isoflurane	BP, HR	No statistical difference
Magni et al, 2005 [14]	Sevoflurane/fentanyl vs. propofol/remifentanil	MAP: intraoperative hypotension; postoperative HTN HR	Remifentanil group had more hypotension intraoperative (P = 0.002), hypertension postoperative (P = 0.0046) No statistical difference
Bhagat et al, 2008 [16]	Propofol vs. fentanyl vs. isoflurane		Less esmolol use with fentanyl P = 0.001
Sneyd et al, 2005 [17]	Remifentanil/propofol vs. remifentanil/sevoflurane	MAP	Remi/Sevo - more hypotension episodes (P = 0.053)
Balakrishnan et al, 2000 [19]	Remifentanil vs. fentanyl	HR, MAP	No statistical difference
Del Gaudio et al, 2006 [7]	Remifentanil vs. fentanyl	HR, MAP	No statistical difference
Djian et al, 2006 [20]	Remifentanil vs. sufentanil	MAP HR	Remifentanil P = 0.037 better MAP, HR stability
From et al, 1990 [30]	Alfentanil vs. fentanyl vs. sufentanil	RR PH	Lower after extubation in Sufentanil group
Warner, 1996 [38]	Alfentanil vs. remifentanil	ICP MAP decrease	No statistical difference