Comparison of Pulse Oximetry and Capnography Monitoring with Arterial Blood Gases Parameters among Postoperative Pediatric Cardiac Surgeries at a University Hospital
Received Date: April 01, 2019; Published Date: April 24, 2019
Background: Pediatric patients undergone mechanical ventilation after cardiac surgeries need rapid and reliable evaluation of their respiratory status. Monitoring of pulse oximetery and capnography as a surrogate, noninvasive measurement of arterial oxygen saturation (Sao2) and arterial carbon dioxide tension (PaCo2) became important respiratory monitoring.
The aim of the study: Was to compare pulse oximetery and capnography monitoring values with arterial blood gas parameters among postoperative pediatric cardiac surgeries.
Subjects and Methods: A descriptive correlational design was adopted utilizing a convenience sample of 88 pediatric patients with cardiac anomalies who undergoing total repair surgeries, intubated for mechanical ventilation and had an indwelling arterial catheter as part of their evaluation in postoperative period were included in the study. Patient’s demographic, clinical relevant data as well as invasive and noninvasive monitoring of arterial oxygen saturation and arterial carbon dioxide partial pressure were utilized in data collection
Results: Statistical analysis demonstrated mean differences between Sao2 and Spo2 (98.2 ±1.6% and 97.5±2.4% respectively; p=0.024)) as well as the mean difference between PaCo2 and PetCo2 (36.9±6.9mmHg and 33.1±7.7mmHg respectively; p <0.001). As well, a significant positive correlation was found between the mean Sao2 and Spo2 (r= 0.935, p<0.001) as well as, between the mean PaCo2 and PetCo2 (r= 0.930, p<0.001).
Conclusion It can be concluded that Spo2 and EtCo2 values are positively correlated with Sao2 and PaCo2 in mechanically ventilated pediatric patients after cardiac surgeries. Therefore Spo2 and EtCo2 monitoring can be used as a continuous, non-invasive predictor for Sao2 and PaCo2.
Keywords: Pulse oximetry; Capnography; Arterial blood gases; Congenital heart defects