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Fig. 1 | BMC Anesthesiology

Fig. 1

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

Fig. 1

Design of the intervention. Both groups had a 3-min preoxygenation with an inspiratory fraction of oxygen (FiO2) set to 1.0 and the fresh gas flow set to 18 L/min from an anesthesia machine using a soft snorkel-type mouthpiece with a nose clip instead of a facemask to prevent air leaks. Abbreviation: PPV: positive pressure ventilation, RP: ramp position, RT: reverse Trendelenburg position, ZEEP: zero end-expiratory pressure ventilation

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BMC Anesthesiology

ISSN: 1471-2253

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