Table 1. Evolution of ONSD (mm), CPP (mm Hg) and P_ECO₂ (mm Hg) over the course of the procedure at 14 defined moments during the procedure: before induction of anaesthesia (T0), 10 minutes after intubation, 10 minutes after insufflation, after 10–40–70–100–130–160–190 minutes of full Trendelenburg, 15–60 minutes after resuming supine position, awake at the PACU (PA) and one day postoperatively (PO).

	ONSD		CPP		PECO2
	Mean	SD	Mean	SD	Mean	SD
T0	4.9	0.2	N/A	N/A	N/A	N/A
Sevo 10	4.9	0.3	73*	14	33*	4
PP 10	5.0	0.2	88*	21	33*	4
Trend 10	5.0*	0.3	87*	15	38	5
Trend 40	5.0*	0.3	80	11	38	4
Trend 70	5.0*	0.3	70**	11	38	5
Trend 100	5.0*	0.2	70**	7	39	5
Trend 130	5.0	0.2	70**	7	38	4
Trend 160	5.0	0.2	63**	8	36	4
Trend 190	5.1	0.2	64**	8	40	4
Supine 15	5.0	0.2	69**	9	37	5
Supine 60	4.9	0.2	87*	16	32*	4
Awake PA	4.8**	0.2	89*	14	0	0
Awake PO	4.8**	0.2	N/A	N/A	0	0

Values are shown in mean (SD).

ONSD: ** differs from * (except POD1 from T100).

CPP: ** differs from *.

P_ECO₂: * lower than other values.