Abstract
Background and Aim: The study aims to identify whether ETCO2 detects early hypoxia compared to monitoring of SpO2, HR and RR (Standard Monitor) in patients undergoing surgical procedure under MAC.
Method: Total 336 patients belonging to Age group of 18-60 years, ASA grade 1 and grade 2, procedure lasting for <4hrs, undergoing sedation under MAC for day care surgery. Measurements of Spo2, HR, RR, ETCO2, NIBP done by applying monitors. Nasal cannula also put for supplemental Oxygen.
Result: Overall 92 episodes of disordered ventilation were detected out of which 67 were detected by ETCO2 (44- Hypoventilation and 23- Apnoea) and 25 were detected by Pulse Oximetry (4- Hypoventilation and 21- desaturation. Overall a mean delay of 51.04 seconds was seen in detection by Pulse Oximetry.
Conclusion: In the study it was concluded that patients under sedation, underwent frequent episodes of disordered ventilation leading to hypoxia. In such scenarios it was seen that ETCO2 monitoring provided a practical advantage of detecting hypoventilation and apnea earlier than Pulse Oximetry showing desaturation.
Keywords: Capnography, ETCO2, pulse oximetry.
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Corresponding Author
Dr Rajshree
Anaesthetist at LTMG Sion hospital
Grant Government Medical College and Sir JJ Group of Hospitals
J J Marg, Nagpada, Mumbai Central, Mumbai, Maharashtra 400008
DOI: https://dx.doi.org/10.18535/jmscr/v12i02.09
