• Matias Ramos and Santiago Tau Anzoategui.
• Department of Anesthesiology, Hospital de Clínicas "José de San Martín", Buenos Aires, Argentina. matt.plate@gmail.com.
• J Anesth. 2022 Dec 1; 36 (6): 770781770-781.

AbstractIf we define the human body by the mass of the elements that compose it, we could say that we are oxygen and other elements. Oxygen, in addition to being fundamental in our composition, is an element that we constantly need to support cellular respiration and, therefore, life. Interestingly, despite its importance, humans have not developed mechanisms that allow us to store it and, therefore, we are unable to sustain life if we are deprived of ventilation, even for brief periods. Accordingly, the ability to induce the cessation of ventilation in a patient must be accompanied by different technical and non-technical skills that allow the patient's safety to be maintained in this highly vulnerable state. Through the use of basic mathematical tools and comparative physiology, we hereby propose to review the physiological foundations of preoxygenation to understand the reasons behind the clinical recommendations in this field.© 2022. The Author(s) under exclusive licence to Japanese Society of Anesthesiologists.

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