Table 2. Early Postoperative Recovery and Effects of Balanced Inhalational Versus Total Intravenous Anesthesia [11-14, 16, 17, 23, 24].

Studies	Drugs	Clinical variables	Results
Lauta et al, 2010 [11]	Sevoflurne/remifentanil vs. propofol/remifentanil	Aldrete score TEO ET	No clinical differences
Ravussin et al, 1991 [24]	Thiopental/isoflurane vs. propofol	GSC	Propofol group had higher GSC score in early recovery
Todd et al, 1993 [12]	Propofol/fentanyl vs. isoflurane/nitrous oxide vs. fentanyl/nitrous oxide	ET Time to commands Aldrete score	No statistical difference
Talke et al, 2002 [13]	Propofol vs. isoflurane vs. propofol/isoflurane	ET TEO Aldrete score VAS	No statistical differences
Magni et al, 2005 [14]	Sevoflurane/fentanyl vs. propofol/remifentanil	ET SOMCT	No statistical differences
Citerio et al, 2012 [23]	Sevoflurane/fentanyl vs. sevoflurane/remifentanil vs. propofol/remifentanil	Aldrete score	No statistical difference
Bhagat et al, 2008 [16]	At time of dural closure bolus of propofol vs. fentanyl vs. isoflurane	Time to emergence (dressing completion to extubation) Early emergence (< 15 min) GCS	Propofol > isoflurane > fentanyl 6 min > 5 min > 4 min (P = 0.0008) - not clinically significant No statistical difference
Sneyd et al, 2005 [17]	Propofol/remifentanil vs. sevoflurane/remifentanil	ET TEO Obey commands	No clinical differences

ET: extubation time; TEO: time to eyes opening; GCS: Glasgow coma scale; VAS: visual analogue scale; SOMCT: short orientation memory concentration test.