Is it possible to predict outcome in cardiac ECMO? Analysis of preoperative risk factors.
BACKGROUND
Serious heart failure may be treated with extracorporeal membrane oxygenation (ECMO) when other treatment fails. The aim of the present study was to analyse preoperative risk factors of early mortality in patients treated with veno-arterial (VA)-ECMO.


METHODS
We studied a total of 18 possible risk factors in 80 patients with severe cardiac insufficiency treated with VA-ECMO. All consecutive cases treated at our institution between Sept.1990 and May 2006 were included. Univariate analysis and multiple logistic regression analysis were performed on 16 risk factors. The endpoint was early mortality (any death within 30 days of ECMO treatment).


RESULTS
Thirty patients (37.5%) died within 30 days. Age, gender, cause of cardiac failure, pre-ECMO treatment (ventilator, NO, IABP) did not significantly influence early mortality. A higher SvO2 was associated with survival and remained significant in the multivariate analysis.


CONCLUSIONS
Treatment with VA-ECMO in patients with severe cardiac failure may save lives. It is, however, difficult to predict outcome. In this study, only SvO2 values prior to ECMO were positively associated with survival.
Wagner
Kari
K
Department of Anaesthesiology, Rikshospitalet-Radiumhospitalet Medical Centre N-0027 Oslo, Norway. kari.wagner@rikshospitalet.no
Risnes
Ivar
I
Abdelnoor
Michael
M
Karlsen
Harald M
HM
Svennevig
Jan Ludvig
JL
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D015199:Extracorporeal Membrane Oxygenation; D005260:Female; D006333:Heart Failure / Q000401:mortality / Q000628:therapy*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D015996:Survival Rate; D016896:Treatment Outcome