Onset of symptoms < 6 hours Mainly < 6 hours
Respiratory symptoms Dyspnea Dyspnea
Central venous pressure Normal  Increased
Pulmonary wedge pressure Normal Increased
Fluid balance Positive or negative Positive
X-ray thorax Bilateral infiltrates Bilateral infiltrates with signs of fluid overload
Echocardiography Normal ejection fraction Decreased ejection fraction
B-type natriuretic peptide Low or normal High
Table 1: Possible Differences Between Transfusion Related Acute Lung Injury (Trali) And Transfusion Associated Cardiac Overload (TACO).