Table 1.

HR, arterial blood gases and hemodynamic parameters at each time point after surgical procedures in four groups are shown (n = 6 in each group)$\left(\overline{\mathit{x}}\mathbf{\pm }\mathbf{s}\right)$

	0 h	2 h	4 h	6 h
HR (beats/min)
Group 1	152 ± 5	155 ± 7	154 ± 8	157 ± 8
Group 2	155 ± 7	158 ± 6	156 ± 9	160 ± 7
Group 3	155 ± 5	162 ± 5*#	168 ± 9*#Δ	175 ± 8*
Group 4	154 ± 6	160 ± 6	168 ± 8*Δ	167 ± 7*
pH
Group 1	7.32 ± 0.06	7.33 ± 0.03	7.29 ± 0.10	7.31 ± 0.01
Group 2	7.25 ± 0.04	7.26 ± 0.04	7.24 ± 0.03	7.21 ± 0.01
Group 3	7.25 ± 0.11#	7.11 ± 0.18	7.23 ± 0.05	7.15 ± 0.14#
Group 4	7.27 ± 0.05	7.18 ± 0.19	7.13 ± 0.11#	7.15 ± 0.20
PaCO2 (mmHg)
Group 1	36.88 ± 6.06	41.52 ± 12.41	40.18 ± 13.86	40.84 ± 10.62
Group 2	38.88 ± 6.66	42.52 ± 12.41	42.18 ± 10.86	44.84 ± 7.62
Group 3	41.43 ± 9.51	56.77 ± 22.75	49.15 ± 14.03	47.48 ± 14.15
Group 4	38.88 ± 6.66	48.52 ± 22.41	45.18 ± 13.86	47.84 ± 17.62
PaO2/FiO2(mmHg)
Group 1	484.42 ± 28.34	475.50 ± 20.80	543.45 ± 61.56	423.20 ± 23.20
Group 2	430.95 ± 28.37	428.75 ± 37.50	431.25 ± 39.24◆	435.00 ± 31.62◆
Group 3	410.40 ± 28.36	335.55 ± 29.29*#Δ	287.90 ± 54.84*#Δ	292.83 ± 60.34*#Δ
Group 4	441.43 ± 24.26	371.87 ± 20.35*#	368.83 ± 55.29*#Δ◆	380.63 ± 56.83◆
MPAP (mmHg)
Group 1	14 ± 1	14 ± 1	13 ± 3	12 ± 1
Group 2	16 ± 2	15 ± 2	14 ± 1	15 ± 2
Group 3	17 ± 3	24 ± 4*#Δ	22 ± 4#Δ	18 ± 4#§
Group 4	17 ± 4	19 ± 3#Δ◆	20 ± 2#Δ	15 ± 2#§
CO(l/min)
Group 1	2.95 ± 0.32	2.84 ± 0.24	2.84 ± 0.69	2.86 ± 0.53
Group 2	2.60 ± 1.00	2.62 ± 1.04	2.62 ± 1.08	2.73 ± 1.03
Group 3	2.88 ± 1.04	2.60 ± 1.14	2.71 ± 1.28	2.63 ± 1.19
Group 4	3.01 ± 0.64	2.62 ± 0.26	3.17 ± 0.54	3.20 ± 0.55
PVR(dyne.s.cm-5)
Group 1	164.24 ± 45.61	200.94 ± 59.54	140.46 ± 55.84	171.59 ± 38.72
Group 2	301.25 ± 96.77#	253.68 ± 99.09	299.52 ± 92.64#	271.66 ± 93.89#
Group 3	373.20 ± 89.09#	601.01 ± 92.33*#Δ	435.88 ± 99.63#	327.09 ± 96.66#§
Group 4	335.88 ± 63.46#	474.67 ± 87.91*#	335.93 ± 43.84#	239.86 ± 53.26*◆§

Note: Group 1: Sham group, Group 2: Ischemia group, Group 3: Reperfusion group, Group 4: Inhaled NO group. * and § P < 0.05 for the comparison with the parameters recorded at the time point before reperfusion and 2 hours after reperfusion within the same group, respectively. At the same time point among different groups,#P < 0.05 for the comparison with the Sham group,Δ P < 0.05 for the comparison with the Ischemia group,◆ P < 0.05 for the comparison with the Reperfusion group.