The comparison of the method for cardiac output measurement in mechanically ventilated critical care unit patients [Mekanik ventilasyon uygulanan yo?un bakim hastalarinda kardiyak output ölçümünde yöntem karşilaştirmasi]
Aim: Although the thermodilution technique for cardiac output monitorization is the most common used clinical method, it is very invasive and has all risks of this. Therefore the importance of the noninvasive cardiac output measurement technique is increased. In this study we aimed to compare the safety of thermodilution method and partial CO2 rebreathing fick technique which is a noninvasive method, at the cardiac output measurement of mechanically ventilated critical care unit patients. Materials and Methods: The study was scheduled to 32 critical care unit patients who were between 23-75 ages and needed mechanical ventilation. Patients ventilated on controlled mechanical ventilation mode. Cardiac output measurements were done twice simultaneously in 4 hours intervals by invasive and noninvasively. Results: There were no statistically differences in cardiac output between the methods at the two measurement (p>0.05). There were a high correlation in cardiac output between the methods at the two measurement (p<0.05). Conclusion: The noninvasive partial CO2 rebreathing fick technique may be an alternative to the thermodilution method for cardiac output determination in mechanically ventilated patients.