Korean J Anesthesiol.  1997 Oct;33(4):664-668. 10.4097/kjae.1997.33.4.664.

Comparisons of the Oxygen Saturation Between Right Atrial and Pulmonary Arterial Blood Immediately After Emergence from Cardiopulmonary Bypass During Open Heart Surgery in Pediatric Patients

• Hwang JT
• Yum KW
• Ahn WS
• Kim SD

• KMID: 2237724
• DOI: http://doi.org/10.4097/kjae.1997.33.4.664

Abstract

BACKGROUND: Mixed venous oxygen saturation (SO2) monitoring turned out to be invaluable in following up systemic cardiovascular status. But balloon-tipped flow-directed thermodilution catheter (Swan-Ganz catheter) insertion carries additional inherent risks other than those of central venous catheterization, and it costs much more expense than simple venous catheter. There has been a lot of papers which argue that central venous catheterization may substitute for the Swan-Ganz catheterization. In addition, it may be very difficult or impossible to insert the Swan-Ganz catheter in pediatric patients. This study was performed to determine whether Swan-Ganz catheterization might be replaced by the central venous catheterization in regards to SO2.
METHODS
In 17 pediatric open heart surgery (OHS) patients, from the central venous catheter, the tip of which had been located in the center of right atrium (RA) and pulmonary artery, blood samples were drawn for gas analysis simultaneously, which was done immediately after emergence from cardiopulmonary bypass.
RESULTS
There were no significant differences between RA blood and mixed venous blood gas analyses except oxygen saturation. The oxygen saturations of both were linearly correlated with each other. The relation was SO2=17 0.8 SRAO2 (R=0.77, p<0.05)
CONCLUSIONS
It may be concluded that RA blood may be used for blood gas analysis in place of mixed venous blood immediately after pediatric open heart surgery.

Keyword

Oxygen, saturation; Heart, cardiopulmonary bypass; Blood, right atrial, pulmonary arterial

MeSH Terms

Blood Gas Analysis
Cardiopulmonary Bypass*
Catheterization, Central Venous
Catheterization, Swan-Ganz
Catheters
Central Venous Catheters
Heart Atria
Heart*
Humans
Oxygen*
Pulmonary Artery
Thermodilution
Thoracic Surgery*
Oxygen