![]() There was also a good correlation between ETCO2 and acidosis state with a Pearson correlation coefficient of 0.374 and p value 0.02 (p < 0.05). However, the paired t-test showed a mean difference between the two parameters of 4.303 with a p value < 0.05 (95% CI 2.818, 5.878). The agreement and difference between ETCO2 and PaCO2 were analyzed using paired sample t-tests.ResultsThere is a strong correlation between ETCO2 and PaCO2 using the Pearson correlation coefficient: 0.716 and p value of 0.00 (p < 0.05). Other variables also were analyzed to determine the correlation using simple linear regression. ![]() Correlation between ETCO2 and PaCO2 was analyzed using the Pearson correlation coefficient. The data were compiled and analyzed using various descriptive studies from the Statistics Program for Social Studies (SPSS) version 12. Arterial blood gas was taken in all patients. Demographic data were collected, and the ETCO2 data were recorded. The patients gave written or verbal consent, and were triaged and treated according to their presenting complaints. MethodsOne hundred fifty acutely breathless patients arriving at the emergency department and fulfilling the inclusion and exclusion criteria were chosen during a 6-month study period. This study was carried out on patients with acute breathlessness to define the utility and role of capnometry in the emergency department.AimThe objectives of the study were: To determine the correlation between end tidal CO2 and PaCO2 in non-intubated acutely breathless patients.To determine factors that influence the end tidal carbon dioxide (ETCO2).To determine the correlation between ETCO2 with PaCO2 in patients presenting with pulmonary disorders. This paper will then go on to provide a robust justification and argument why the monitoring of ETCO2 is necessary and of patient benefit both in the pre and in hospital environment and additionally will also support the clinician in providing the optimal quality of care within the pre hospital environment.īackgroundCapnometry measures carbon dioxide in expired air and provides the clinician with a noninvasive measure of the systemic metabolism, circulation and ventilation. Furthermore, this paper will propose its use in patients where acidosis and carbon retention are key factors such as Chronic Obstructive Airways Disease (COPD) and Diabetic Ketoacidosis (DKA), Asthma and Congestive Heart Failure (CHF) to name but a few. This Paper will further highlight the benefits of ETCO2 use in the pre and out of hospital environment in many more situations aside from just the cardiac arrest situation. ![]() ![]() The Use of ETCO2 monitoring allows the clinician a greater insight into the true current condition of the patient when compared with oxygen saturation monitoring (SPO2) as it has been noted that if a patient was to hold their breath, to simulate apnoea, capnography would show a marked reduction in exhaled Carbon dioxide (CO2) whilst SPO2 readings would continue to show ‘normal’ saturation levels for a number of minutes. Whilst it has been demonstrated that ETCO2 is key in terms of ensuring correct endotracheal tube placement in cardiac arrest Sinclair and Sartin (2015) has highlighted that ETCO2 monitoring has significant benefits when further utilised in the wider context of cardiac arrest to potentially improve patient outcomes. Much has been written recently regarding the need for increased utilisation of end-tidal Carbon Dioxide (ETCO2) monitoring in both peri-arrest and post arrest situation in addition to the cardiac arrest scenario.
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