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Fig. 1 | BMC Anesthesiology

Fig. 1

From: Comparison of preoxygenation efficiency measured by the oxygen reserve index between high-flow nasal oxygenation and facemask ventilation: a randomised controlled trial

Fig. 1

Patient enrolment flowchart

Among 218 patients scheduled for elective surgery under general anaesthesia who required orotracheal intubation, eight did not meet the inclusion criteria and 10 declined to participate. Three patients were excluded from the study due to technical problems regarding the recording of vital signs, including the oxygen reserve index. The final analysis included 197 patients

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BMC Anesthesiology

ISSN: 1471-2253

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