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Figure 1 :Comparison of the baseline oxygenation index with various post CPB values within the same group (Ketamine Group). P/F value= PaO2/FIO2= Oxygenation Index; P/F 1 = Post CPB at 100% oxygen; P/F 0.5 = Post CPB at 50% oxygen; P/F p1 = 10 minutes after reaching ICU; P/F p2 = 3 hrs after reaching ICU; P/F p3 = 6 hrs after reaching ICU; and P/F ps = Pressure Support ventilation; P/F e1 = 30 minutes after extubation; P/F e2 = 3 hrs after extubation; *= P ≤ 0.05

Figure 1 :Comparison of the baseline oxygenation index with various post CPB values within the same group (Ketamine Group). P/F value= PaO2/FIO2= Oxygenation Index; P/F 1 = Post CPB at 100% oxygen; P/F 0.5 = Post CPB at 50% oxygen; P/F p1 = 10 minutes after reaching ICU; P/F p2 = 3 hrs after reaching ICU; P/F p3 = 6 hrs after reaching ICU; and P/F ps = Pressure Support ventilation; P/F e1 = 30 minutes after extubation; P/F e2 = 3 hrs after extubation; *= P ≤ 0.05