Table 2.

Hemodynamics and respiratory variables

Parameter	C group			P-RM group			p value-between groups at T2
	T1	p value Intra-group	T2	T1	p value Intra-group	T2
Heart rate (bpm)	102 ± 15	0.033	99 ± 14	95 ± 14	0.928	97 ± 14	0.678
MAP (mmHg)	58 ± 7	0.338	58 ± 6	58 ± 6	0.763	59 ± 6	0.597
SpO2 (%)	98.5 ± 0.8	0.500	98.4 ± 1.1	98.8 ± 0.7	0.996	99.3 ± 0.5	0.002
PETCO2 (mmHg)	45 ± 3	0.006	42 ± 4	47 ± 4	< 0.0001	39 ± 3	0.005
Pip (cmH2O)	15 ± 2	0.002	17 ± 1	14 ± 2	0.003	16 ± 2	0.855
PEEP (cmH2O)	5	–	8	5	–	8	–
Cdyn (cmH2O)	14 ± 6	0.579	14 ± 5	15 ± 6	0.001	18 ± 6	0.0002
Rrs (cmH2O/L−1)	33 ± 8	0.941	36 ± 11	33 ± 10	0.833	35 ± 12	0.839

T1 after anesthesia induction, T2 after 10 cmH₂O of PEEP in the control group (C group) and in the postural recruitment maneuver group (P-RM group), MAP mean arterial blood pressure, SpO₂ pulse oximetry hemoglobin saturation, PETCO₂ end-tidal partial pressure of carbon dioxide, Pip peak inspiratory pressure, PEEP positive end-expiratory pressure, Cdyn dynamic respiratory compliance, Rrs respiratory airways resistance. Intra-group comparison at T1 = all p ns