Relation of cerebral tissue oxygenation index to central venous oxygen saturation in children.
OBJECTIVE
To evaluate the relationship between the cerebral tissue oxygenation index measured by near-infrared spectroscopy and central venous oxygen saturation (SvO2) after corrective surgery of congenital heart defects in children.


METHODS
Prospective observational clinical study.


METHODS
A tertiary neonatal and paediatric intensive care unit for paediatric cardiology.


METHODS
Neonates and children consecutively admitted to the paediatric cardiology intensive care unit after corrective surgery of non-cyanotic congenital heart defects.


RESULTS
Forty-three children were studied. Cerebral tissue oxygenation index, measured non-invasively by near-infrared spectroscopy, was compared to SvO2, measured by a catheter placed in the right atrium, and to haemodynamic and respiratory parameters. Pearson's correlation coefficients and p values were calculated. Simultaneously measured values for SvO2 (62.2+/-9.8%, 39.8-80.4%) and cerebral tissue oxygenation index (56.7+/-8.8%, 35.8-71.2%) showed a significant correlation ( r=0.52, p<0.001).


CONCLUSIONS
Cerebral tissue oxygenation index and SvO2 are not interchangeable parameters, but cerebral tissue oxygenation index reflects the haemodynamic influence on cerebral oxygenation after cardiovascular surgery. Further work is necessary to confirm the clinical role of continuous non-invasive measurement of cerebral tissue oxygenation index with regard to the variations of global systemic oxygen consumption after cardiac surgery in children.
Nagdyman
Nicole
N
Department of Intensive Care and Paediatric Cardiology, German Heart Institute Berlin, Augustenburger Platz 1, 13353 Berlin, Germany. nagdyman@dhzb.de
Fleck
Thilo
T
Barth
Sven
S
Abdul-Khaliq
Hashim
H
Stiller
Brigitte
B
Ewert
Peter
P
Huebler
Michael
M
Kuppe
Hermann
H
Lange
Peter E
PE
D000293:Adolescent; D001921:Brain / Q000378:metabolism*; D002405:Catheterization, Central Venous; D002648:Child; D002675:Child, Preschool; D005260:Female; D006330:Heart Defects, Congenital / Q000601:surgery*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008991:Monitoring, Physiologic / Q000379:methods*; D010092:Oximetry; D010100:Oxygen / Q000378:metabolism*; D011182:Postoperative Care; D011446:Prospective Studies; D012044:Regression Analysis; D019265:Spectroscopy, Near-Infrared
D010100:Oxygen