Effect of reverse Trendelenburg position and positive pressure ventilation on safe non-hypoxic apnea period in obese, a randomized-control trial

Table 2 Results

	RT/PPV (n = 24)	RP/ZEEP (n = 24)	P
Primary endpoint
Safe non-hypoxic apnea period (seconds)	258.2 (55.1)	216.7 (42.3)	0.0053
Secondary endpoint
Time for FetO₂ > 0.9 (seconds)	85.1 (47.8)	145.3 (40.8)	< 0.0001
Maximal FetO₂ (%)	91 (5)	89 (1)	0.0003
Time for SpO₂ > 97% (seconds)	69.8 (24.2)	91.4 (39.2)	0.0384
Proportion of patients that reached FeO₂ of 0.90 (%)	21/24 (88)	13/24 (54)	0.0243

Results are presented as mean (SD), unless otherwise specified
Abbreviations: RP/ZEEP Ramp Position/Zero End-Expiratory Pressure, FetO₂ fractional end-tidal oxygen concentration, RT/PPV Reverse Trendelenburg/Positive Pressure Ventilation, SpO₂ pulsed oxygen saturation

ISSN: 1471-2253