A Study to Correlate the ETCO2 and ABG in Predicting Metabolic Acidosis Among Patient on Mechanical Ventilation in Intensive Care Unit

Background: Capnography is an essential instrument for tracking metabolic and respiratory activity. According to the the ETCO2 level to predict metabolic acidosis with patient with mechanical ventilation admitted in ICU. Purpose: The purpose of current study was to predict the metabolic acidosis among patient on mechanical ventilator support. Materials and methods; A study was descriptive-analytical study design, was conducted in the host institution of Saveetha Medical College and Hospitals. There were 60 samples in ICU using purposive sampling techniques on the inclusion criteria within 24 hours of admission. In ICU collect data from every intubated patient with mechanical ventilator support along with ETCO2 probe connecting to the Endotracheal tube, Monitoring capnography values and comparison with the ABG values to predict metabolic acidosis. Results: Out of 60 samples with respect to capnography with EtCO2 the mean score of Bicarbonate level among patients with metabolic acidosis was 21.97±3.37 and the mean score of ETCO2 was 44.70±7.24. The calculated Karl Pearson’s Correlation value of r = -0.303 shows a negative correlation which was found to be statistically significant at p