Aisys anesthesia machine user manual9/18/2023 Ventilators were introduced to take away the task of manual ventilation and afford more freedom to the anaesthetists. Physiological monitoring of the patients now involves advanced technology, which provides detailed information on not only the cardiorespiratory status of the patient but also other pertinent parameters such as the depth of anaesthesia, temperature, etc. The quest for greater patient safety and the technological innovations made the development of advanced anaesthesia gas delivery systems possible. The Boyle's machine which was developed in early 20 th century became synonymous with the anaesthesia delivery system. However, it was recognised quite early in the history of anaesthesia, at the cost of the lives of many unfortunate patients, that controlling the amount of anaesthetic agent delivered and maintaining ventilation of the lungs with oxygen enriched gas was paramount to the safe conduct of an anaesthetic. Schimmelbusch and Yankauer masks were devised to facilitate delivery of volatile anaesthetic agents. Anaesthesia delivery has required equipment right from its very early days.
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