Etco2 Levels on the End-tidal Concentration of Sevoflurane

Overview

he assessment of adequate levels of anaesthesia traditionally relies not only on a patient's movement but also on the hemodynamic response (or both) to a surgical stimulus

Currently a derivative of MAC namely, end tidal partial pressure (FET) displayed on the work station as concentration , maybe an alternative useful measure of the anaesthetic effect of an inhaled anaesthetic agent . Many pharmacological factors have been associated with alterations in MAC and Mac derivatives such as nonsteroidal anti-inflammatory drugs (NSAIDs), analgesics, and anesthetics. However, few studies have focused on physiological factors, such as hypercarbia or hypocarbia. A correlation has been found between Paco2 and Etco2 in ventilated patients with healthy lungs. Some authors have suggested that Etco2 could be considered appropriate for estimating Paco2 even in critical patients. Knowledge of the effects of Paco2 on end tidal concentration of sevoflurane among patients undergoing laparoscopic cholecystectomy may help anaesthesiologists titrate sevoflurane carefully and precisely during different mechanical ventilation settings to avoid dose-dependent hypotension, impaired cardiac contractility, and hypothermia caused by excessive anaesthetic depth of sevoflurane.

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Eligibility

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