Correlation between right atrial venous blood gasometry and cardiac index in cardiac surgery postoperative period.
OBJECTIVE
To determine, even during postoperative period, the confiability of the cardiac index correlate with the data data given by a central atrial venous blood gasometry in patients who underwent cardiac surgery.


METHODS
From the sample of arterial and venous blood of right atrium gathered in postoperative of cardiac surgery, it was determinated the hemoglobin concentration and the gasometric study through what was observed of the venous oxygen saturation (SvO2) and the partial pressure of oxygen from venous blood gathered in right atrium (PvO2), add to the calculation of artery-venous difference of the oxygen content--radial artery / right atrium (C( a-v )O2). Afterwards, these parameters were compared with the cardiac index determined by thermodilution.


RESULTS
There was good correlation between SvO2, C(av)O2 of the venous right atrial blood and cardiac index measured by thermodilution method, with sensibility and specificity good and high positive predict value and negative predict value. The PvO2 demonstrated poor sensibility in the estimative of low output.


CONCLUSIONS
In cardiac surgery postoperative, the SvO2 and the C(a-v)O2 were safe parameters correlated with low cardiac output. The PvO2 demonstrated poor sensibility in the estimative of low output in postoperative cardiac surgery.
Duarte
João Jackson
JJ
Cardiovascular Surgery Service, Hospital Regional de Mato Grosso do Sul, Cardiovascular Surgery Service, University Hospital, Federal University of Mato Groso do Sul, Campo Grande, MS, Brasil.
Pontes
José Carlos Dorsa Vieira
JC
Gomes
Otoni Moreira
OM
Silva
Guilherme Viotto Rodrigues da
GV
Gardenal
Neimar
N
Silva
Arino Faria da
AF
Viola
Marcos Douglas Zamboni
MD
D000328:Adult; D000368:Aged; D001784:Blood Gas Analysis; D002302:Cardiac Output; D002303:Cardiac Output, Low / Q000097:blood; D006348:Cardiac Surgical Procedures; D002407:Catheterization, Swan-Ganz / Q000379:methods; D004812:Epidemiologic Methods; D005260:Female; D006325:Heart Atria; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D010313:Partial Pressure; D011184:Postoperative Period; D017534:Radial Artery; D013815:Thermodilution / Q000379:methods
D010100:Oxygen