Figure 4

Forest plot for need for airway support. Abbreviations: CI, confidence interval; CON, control; D, dexmedetomidine; F, fentanyl; K, ketamine; M, midazolam; MRI, magnetic resonance imaging; Me, Meperidine; Mt, methohexital; NR, not reported; P, propofol; Pe, pentobarbital; R, remifentanil; RD, risk difference; T, Thiopental; TRT, treatment.