Determination of oxygen delivery and consumption versus cardiac index and oxygen extraction ratio.
Measuring cardiac output without knowledge of the oxygen extraction by the tissues is of limited value. Instead of calculating oxygen consumption and oxygen delivery, a diagram relating cardiac index to the oxygen extraction ratio is proposed to interpret hemodynamic data at the bedside. This diagram is particularly helpful in interpreting cardiac index in the presence of changes in hemoglobin or oxygen demands and in evaluating the effects of therapy.
Vincent
J L
JL
Department of Intensive Care, Erasme University Hospital, Free University of Brussels, Belgium.
D002302:Cardiac Output; D003627:Data Interpretation, Statistical; D006801:Humans; D008955:Models, Cardiovascular; D008991:Monitoring, Physiologic / Q000379:methods*; D010100:Oxygen / Q000378:metabolism*; D010101:Oxygen Consumption; D019095:Point-of-Care Systems
D010100:Oxygen