Effects of Permissive Hypercapnia on Laparoscopic Surgery for Rectal Carcinoma

Figure 2

Analysis of arterial blood samples. The difference in the levels of arterial blood PaCO₂ (a), pH (b), and Spo₂ (c) was not significant at each time point in the three groups; the ratio of arterial oxygen partial pressure to fractional inspired oxygen (PaO₂/FiO₂, oxygen index) in the high hypercapnia group was significantly higher than that in the low hypercapnia group and control at T3 and T4 (d). T1: before operation; T2: 30 min after pneumoperitoneum; T3: 24 h postoperation; T4: 72 h postoperation. Compared with control group; ^#compared with low hypercapnia group.

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(b)

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