Physiologic Responses to Infrarenal Aortic Cross-Clamping during Laparoscopic or Conventional Vascular Surgery in Experimental Animal Model: Comparative Study

Table 5

Acid-base balance in pigs anesthetized with sevoflurane, fentanyl, and vecuronium and undergoing aortic cross-clamping through laparotomy (Group I) or laparoscopy with (Group II) or without aortic cross-clamping (Group III).

	PaCO2 (mmHg)			PaO2 (mmHg)
Times	Group I	Group II^†	Group III	Group I	Group II	Group III
T1	36.0±5.0	41.1±3.7	38.0±2.4	487.8±99.3	574.2±81.1	501.2±41.7
T2	33.0±9.2	45.6±6.4	43.0±6.5	447.3±111.7	370.6±88.2^*	495.7±37.3
T3	30.7±6.1	48.1±3.8^*	43.0±3.9	443.7±34.8	399.8±96.3^*	479.0±33.2
T4	37.5±6.9	51.6±2.3^*	43.7±3.0	501.7±64.9	392.6±110.5^*	456.7±48.6
T5	39.5±7.2	49.0±4.4^*	42.2±2.2	497.0±58.2	458.2±106.2	445.0±47.6
T6	37.8±7.0	48.6±4.0^*	39.2±2.2	481.0±72.7	440.0±105.4	448.7±26.6
T7	38.5±8.5	46.0±2.2	38.0±2.3	434.3±76.9	452.0±106.9	462.0±16.9

Data are expressed as mean ± SD.
^†Significantly (𝑃<.05) different from values obtained for pigs undergoing laparoscopy and cross-clamping.
^*Significant changes from baseline within each group (𝑃<.05).