摘要
The COVID-19 pandemic has had a major impact on health care services, leading to a breakdown in public and private health systems worldwide. A major challenge was the scarcity of mechanical ventilators, which resulted in the use of anaesthesia devices for this purpose. However, they are quite different from mechanical ventilators used in Intensive Care Units and some adaptations, such as the use of high flow to reduce CO2 rebreathing, were necessary to ensure patient safety. The objective of this study was to present a mathematical formula and develop a tool that can be used to adjust the flow of oxygen and air in flow metres of anaesthesia devices that do not have oxygen analysers or these analysers are not operational. A literature review was conducted using the main health databases and libraries as research sources: PubMed, Virtual Health Library (VHL), SciELO, and Cochrane. The review included studies published in English, Spanish, and Portuguese. Animal studies were excluded. A total of 11 references were included to support this article.
The COVID-19 pandemic has had a major impact on health care services, leading to a breakdown in public and private health systems worldwide. A major challenge was the scarcity of mechanical ventilators, which resulted in the use of anaesthesia devices for this purpose. However, they are quite different from mechanical ventilators used in Intensive Care Units and some adaptations, such as the use of high flow to reduce CO2 rebreathing, were necessary to ensure patient safety. The objective of this study was to present a mathematical formula and develop a tool that can be used to adjust the flow of oxygen and air in flow metres of anaesthesia devices that do not have oxygen analysers or these analysers are not operational. A literature review was conducted using the main health databases and libraries as research sources: PubMed, Virtual Health Library (VHL), SciELO, and Cochrane. The review included studies published in English, Spanish, and Portuguese. Animal studies were excluded. A total of 11 references were included to support this article.
作者
Plínio de Oliveira Holanda
Nely Marjollie Guanabara Teixeira Reis
José Carlos R. Nascimento
Felipe Paiva Alencar
Marilman Maciel Benício
Plínio de Oliveira Holanda;Nely Marjollie Guanabara Teixeira Reis;José Carlos R. Nascimento;Felipe Paiva Alencar;Marilman Maciel Benício(Department of Anesthesia, Dr. Jose Frota Institute, Fortaleza, Brazil;Unichristus University, Fortaleza, Brazil;Department of Anesthesia, Fortaleza General Hospital, Fortaleza, Brazil;Laboratory of the Biology of Tissue Healing, Ontogeny and Nutrition, Department of Morphology and Institute of Biomedicine, School of Medicine, Federal University of Ceara, Fortaleza, Brazil;Department of Computer Engineering, Ceara State University, Fortaleza, Brazil)
