The Process Flow Of Low Flow Anesthesia
What is Low Flow Anaesthesia?
This can be defined as any inhalation procedure wherein a circle system using an absorbent with a fresh gas flow of <patients alveolar minute volume, less than 1–1.5 l/min, 3 l/min or less, 0.5–2 l/m, less than 4 l/m, 500–1000 ml/min, 0.5–1 l/min or any FG flow which is less than the alveolar ventilation. The usage of the contemporary anesthetic equipment we can enact the FG flow when it is lessened to the least of 2L/min or even lesser. Using modern anesthetic machines, this can be achieved when FG flow (FGF) is reduced to at least 2 L/min or less.
Hidden facts on the usage of Low Flow Anesthesia in the past
The history behind the usage of Low Flow Anesthesia?
Inhalational anesthesia and closed system anesthesia are almost the same age. Almost/closed anesthesia systems have been in use since 1850. John Snow (1813–53) has found that inhalation anesthetics were exhaled mostly unchanged in the expired air of anesthetized patients. He based on his studies concluded saying that the narcotic effects of the volatile anesthetics can be marked as prolonged by reinhaling the unused vapors. The earlier anesthetic agent was chloroform, administrated via a closed system, where KOH was utilized as a CO2 absorber. However, that kind of CO2 absorption did not gain acceptance. Later, a quick and effective method of CO2 absorption was developed when the first soda-lime absorber was introduced in 1917.
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