End-Tidal CO 2 for Prediction of Cardiac Output Following Weaning from Cardiopulmonary Bypass
This prospective study included 32 patients undergoing cardiopulmonary bypass (CPB) for elective coronary artery bypass grafting correlates the respiratory end-tidal CO 2 (ETCO 2 ) during partial separation from CPB with cardiac output (CO) following weaning from CPB. After induction of general anes...
Gespeichert in:
Veröffentlicht in: | The Journal of extra-corporeal technology 2004-09, Vol.36 (3), p.255-257 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | This prospective study included 32 patients undergoing cardiopulmonary bypass (CPB) for elective coronary artery bypass grafting correlates the respiratory end-tidal CO
2
(ETCO
2
) during partial separation from CPB with cardiac output (CO) following weaning from CPB. After induction of general anesthesia, a pulmonary artery catheter was inserted for measurement of cardiac output by thermodilution. Patients were monitored using a 5-lead ECG, pulse oximeter, invasive blood pressure monitoring, rectal temperature probe, and end-tidal capnography. At the end of surgery, patients were weaned from CPB in a stepwise fashion. Respiratory ETCO
2
and in-line venous oximetry were continuously monitored during weaning. The ETCO
2
was recorded at quarter pump flow and after complete weaning from CPB. Following weaning from CPB, CO was measured by thermodilution. The CO values were correlated with the ETCO
2
during partial bypass and following weaning from bypass. Regression analysis of ETCO
2
at quarter-flow and post-bypass CO showed significant correlation (r = 0.57,
p
< .001). Also, regression analysis of ETCO
2
after complete weaning from bypass and post-bypass CO showed significant correlation (r = 0.6,
p
= .002). The correlation between ETCO
2
and CO showed that an ETCO
2
>30 mm Hg during partial CPB will always predict an adequate CO following weaning from CPB. An ETCO
2 |
---|---|
ISSN: | 2969-8960 2969-8960 |
DOI: | 10.1051/ject/2004363255 |