Eakage n = 1, intraoperative brain swelling n = 1) 2 (LMA leakage n = 1, intraoperative brain swelling n = 1) 4/NK NK NK NK NK 0 NK NK NK NK NK 0 0 NK 1 3 0 0 1/NK 1 0 0 NK 7/NK NK NK 1 (agitation/ pain) 8 (agitation/ pain) 27/22 NK NK NK NK NK NK NK NKNKKim 2009 [37]NKLi 2015 [38]NKLobo 2007 [39]NKLow 2007 [40]165 [85?75]McNicholas 2014 [41]NKPLOS ONE | DOI:10.1371/journal.pone.0156448 May 26,NK NK NK 165 [75?45] 0 1 1/1 NK NK NK 124 (benign group n = 39, malignant group n = 85) postoperative NK NK NK 113 (midline shift n = 84, no midline shift n = 29) postoperative 16 (n = 2 group A, <8/2004; n = 14 group B >8/2004)/ NK 0 0 1 (hypoxia SpO2 <90 ) 1 (hypoxia SpO2 <90 ) 1 (respiratory insufficiency) 1 (respiratory insufficiency) NK/4 0/NK 2/NK 2 (Group B >8/2004) 2 (Intubation group B > 8/2004) NK NK NK NK NK NK 2 (Intubation group B > 8/2004) NK NK NK 0 0 NK NK 26 NK NK 28 (need for antihypertensive medication) 3/1 NK NK NK NK 5 (postoperative) NKNossek 2013 [42]NKNossek 2013 [43]NKOlsen 2008 [44]NKOuyang 2013 [45]Malignant group 211.6?3.6, benign group 213.9?5.Ouyang 2013 [46]Midline shift 201.3 ?4.1, no midline shift 242.7?7.Pereira 2008 [47]NKPeruzzi 2011 [48]NKPinsker 2007 [49]NKRajan 2013 [50]NKRughani 2011 [51]159, range [75?15]Anaesthesia Management for Awake Craniotomy23 /(Continued)Table 4. (Continued)Duration awake phase in min., mean [range]/ ?SD AC failure Intraoperative hypoxia Nausea and/or vomiting intraoperative hypertension (>20 deviation from baseline) 0 0 4 NK 3 (dexmedetomidine 1, propofol 2) NK NK 1 (intraoperative), 2 (postoperative) NK 2 (dexmedetomidine n = 1, propofol n = 1) intraoperative NK NK Conversion into GA Intraoperative seizures /history of seizures in these patients 14/NK 0 0 25/NK NK 1 (propofol group) NK 3 0 0 NK NK NK NK Dexmedetomidine 31.7?.0, propofol 29.6?.9 0 0 NK 6 (n = 2 air embolism, n = 1 seizure, n = 1 motor neglect, n = 1 somnolence, n = 1 no wake up after GA) 1/NK NK 2 (restlessness and hypoxia) 1 (brain bulge) 5/5 (propofol n = 2, dexmedetomidine n = 3) 1(SAS group)/6 NK 2/NK 4 (no BIS n = 3, BIS n = 1) / NK 2 4 (propofol n = 3, dexmedetomidine n = 1) 0 NK 0 6 (n = 2 air embolism, n = 1 seizure, n = 1 motor neglect, n = 1 somnolence, n = 1 no wake up after GA) 1 (restlessness) 1 (brain bulge) 2 (seizures) 2 (seizures) 0 0 0 0 0StudyDuration surgery in min., mean ?SD [range]Sacko 2010 [52]Sanus 2015 [53]NKSee 2007 [54]median 240 [120?420]Serletis 2007 [55]NKShen 2013 [56]Dexmedetomidine 271.9?0.0, propofol 254.5?9.PLOS ONE | DOI:10.1371/journal.pone.0156448 May 26,NK NK 8 9 (propofol) 8 (postoperative) 0 (intraoperative) NK NK NK 6 (n = 4 brain bulge, n = 2 somnolence) 0 0 0 0 0 1 NK NK NK NK NKShinoura 2013 [57]NKSinha 2007 [58]376.7?05.6 [240?480]Sokhal 2015 [59]268?5,7 [165?90]Souter 2007 [60]AZD-8055MedChemExpress AZD-8055 NKWrede 2011 [61]NKZhang 2008 [62]NKAC, awake craniotomy; LMA, laryngeal mask airway; min., minutes; n =, specified get BMS-986020 number of patients; NK, not known; PON(V), postoperative nausea (and vomiting); SD, standarddeviation; SpO2, peripheral oxygen saturation. Data are presented as numbers of patients, or mean ?standard deviation or [range].doi:10.1371/journal.pone.0156448.tAnaesthesia Management for Awake Craniotomy24 /Table 5. Patient outcomes.Persistent neurological dysfunction >6months if not otherwise stated Tumour total resection NK 8 8 NK NK 13 NK NK NK for all patients NK NK NK NK 89 NK 12 (9 young + 3 elderly) NK 343 (n = 272 young + n = 71 elderly) NK 0 0 NK 3 10 29 NK NK NK NK NK NK NK NK N.Eakage n = 1, intraoperative brain swelling n = 1) 2 (LMA leakage n = 1, intraoperative brain swelling n = 1) 4/NK NK NK NK NK 0 NK NK NK NK NK 0 0 NK 1 3 0 0 1/NK 1 0 0 NK 7/NK NK NK 1 (agitation/ pain) 8 (agitation/ pain) 27/22 NK NK NK NK NK NK NK NKNKKim 2009 [37]NKLi 2015 [38]NKLobo 2007 [39]NKLow 2007 [40]165 [85?75]McNicholas 2014 [41]NKPLOS ONE | DOI:10.1371/journal.pone.0156448 May 26,NK NK NK 165 [75?45] 0 1 1/1 NK NK NK 124 (benign group n = 39, malignant group n = 85) postoperative NK NK NK 113 (midline shift n = 84, no midline shift n = 29) postoperative 16 (n = 2 group A, <8/2004; n = 14 group B >8/2004)/ NK 0 0 1 (hypoxia SpO2 <90 ) 1 (hypoxia SpO2 <90 ) 1 (respiratory insufficiency) 1 (respiratory insufficiency) NK/4 0/NK 2/NK 2 (Group B >8/2004) 2 (Intubation group B > 8/2004) NK NK NK NK NK NK 2 (Intubation group B > 8/2004) NK NK NK 0 0 NK NK 26 NK NK 28 (need for antihypertensive medication) 3/1 NK NK NK NK 5 (postoperative) NKNossek 2013 [42]NKNossek 2013 [43]NKOlsen 2008 [44]NKOuyang 2013 [45]Malignant group 211.6?3.6, benign group 213.9?5.Ouyang 2013 [46]Midline shift 201.3 ?4.1, no midline shift 242.7?7.Pereira 2008 [47]NKPeruzzi 2011 [48]NKPinsker 2007 [49]NKRajan 2013 [50]NKRughani 2011 [51]159, range [75?15]Anaesthesia Management for Awake Craniotomy23 /(Continued)Table 4. (Continued)Duration awake phase in min., mean [range]/ ?SD AC failure Intraoperative hypoxia Nausea and/or vomiting intraoperative hypertension (>20 deviation from baseline) 0 0 4 NK 3 (dexmedetomidine 1, propofol 2) NK NK 1 (intraoperative), 2 (postoperative) NK 2 (dexmedetomidine n = 1, propofol n = 1) intraoperative NK NK Conversion into GA Intraoperative seizures /history of seizures in these patients 14/NK 0 0 25/NK NK 1 (propofol group) NK 3 0 0 NK NK NK NK Dexmedetomidine 31.7?.0, propofol 29.6?.9 0 0 NK 6 (n = 2 air embolism, n = 1 seizure, n = 1 motor neglect, n = 1 somnolence, n = 1 no wake up after GA) 1/NK NK 2 (restlessness and hypoxia) 1 (brain bulge) 5/5 (propofol n = 2, dexmedetomidine n = 3) 1(SAS group)/6 NK 2/NK 4 (no BIS n = 3, BIS n = 1) / NK 2 4 (propofol n = 3, dexmedetomidine n = 1) 0 NK 0 6 (n = 2 air embolism, n = 1 seizure, n = 1 motor neglect, n = 1 somnolence, n = 1 no wake up after GA) 1 (restlessness) 1 (brain bulge) 2 (seizures) 2 (seizures) 0 0 0 0 0StudyDuration surgery in min., mean ?SD [range]Sacko 2010 [52]Sanus 2015 [53]NKSee 2007 [54]median 240 [120?420]Serletis 2007 [55]NKShen 2013 [56]Dexmedetomidine 271.9?0.0, propofol 254.5?9.PLOS ONE | DOI:10.1371/journal.pone.0156448 May 26,NK NK 8 9 (propofol) 8 (postoperative) 0 (intraoperative) NK NK NK 6 (n = 4 brain bulge, n = 2 somnolence) 0 0 0 0 0 1 NK NK NK NK NKShinoura 2013 [57]NKSinha 2007 [58]376.7?05.6 [240?480]Sokhal 2015 [59]268?5,7 [165?90]Souter 2007 [60]NKWrede 2011 [61]NKZhang 2008 [62]NKAC, awake craniotomy; LMA, laryngeal mask airway; min., minutes; n =, specified number of patients; NK, not known; PON(V), postoperative nausea (and vomiting); SD, standarddeviation; SpO2, peripheral oxygen saturation. Data are presented as numbers of patients, or mean ?standard deviation or [range].doi:10.1371/journal.pone.0156448.tAnaesthesia Management for Awake Craniotomy24 /Table 5. Patient outcomes.Persistent neurological dysfunction >6months if not otherwise stated Tumour total resection NK 8 8 NK NK 13 NK NK NK for all patients NK NK NK NK 89 NK 12 (9 young + 3 elderly) NK 343 (n = 272 young + n = 71 elderly) NK 0 0 NK 3 10 29 NK NK NK NK NK NK NK NK N.