Different positive end expiratory pressure and tidal volume controls on lung protection and inflammatory factors during surgical anesthesia

Table 6 Comparison of hemodynamic indexes between two groups of patients before and after operation (mean ± SD)

Group	T0	T1	T2	T3
CO (L/min)
Group A (n = 60)	4.81 ± 0.85	4.43 ± 0.80	4.36 ± 0.75	4.51 ± 0.83
Group B (n = 60)	4.95 ± 0.90	4.30 ± 0.78	4.13 ± 0.80	4.37 ± 0.86
t value	-0.876	0.901	1.625	0.907
P value	0.383	0.369	0.107	0.366
CI [L/(min·m2)]
Group A (n = 60)	4.11 ± 0.40	3.83 ± 0.46	3.51 ± 0.42	3.68 ± 0.40
Group B (n = 60)	4.26 ± 0.44	3.90 ± 0.50	3.30 ± 0.39	3.53 ± 0.44
t value	-1.954	-0.798	2.838	1.954
P value	0.053	0.426	0.005	0.053
SVI (mL/m2)
Group A (n = 60)	47.52 ± 4.63	44.03 ± 3.75	43.85 ± 3.11	45.08 ± 4.09
Group B (n = 60)	48.36 ± 4.90	43.41 ± 4.03	41.66 ± 3.57	44.13 ± 4.37
t value	-0.965	0.872	3.583	1.229
P value	0.336	0.385	0.000	0.221
MAP (mmHg)
Group A (n = 60)	97.63 ± 4.15	88.16 ± 5.20	87.11 ± 4.64	102.84 ± 5.00
Group B (n = 60)	98.90 ± 4.68	86.85 ± 4.96	86.08 ± 5.03	104.07 ± 4.86
t value	-1.573	1.412	1.166	-1.366
P value	0.118	0.161	0.246	0.174

CO: Cardiac output; CI: Cardiac index; SVI: Stroke volume index; MAP: Mean arterial pressure.