Medtronic autoLog IQ Mode D'emploi page 8

Size: 7 x 9 in (178 x 229 mm)
2.1 Advantages of autotransfusion over allogeneic transfusion
There are several benefits to autotransfusion:
• The risk of blood-transmitted diseases is eliminated.
• The related costs of transfusion are minimized.
• The risk of clerical errors is minimized.
• The use of autologous blood provides additional assurance during surgery on patients with multiple red blood cell antibodies
or rare blood phenotypes.
• Valuable allogeneic blood is conserved.
• This process is generally accepted by patients with religious objections to allogeneic transfusion.
2.2 Principles of operation
Blood contains a suspension of formed elements of different densities. The autoLog IQ autotransfusion system (the device)
operates by separating whole blood into its individual components by centrifugation.
During operation, the following materials are recovered:
• Washed, packed red blood cells
• A small volume of saline
The following materials are less dense than red blood cells; they are removed during operation:
• Lipids and fats
• Plasma-free hemoglobin
• Pharmacologic agents
• Irrigation solutions
• Anticoagulants
• Potassium
• Plasma
• Saline
As blood continues to enter the spinning bowl, the amassing red blood cell pack begins to occupy more of the bowl volume, and the
excess plasma is pushed ahead of the red blood cells. When the total liquid volume of the bowl has been exceeded, the excess
plasma exits the bowl through the effluent outlet to the waste bag via the connecting tubing.
To rid the red blood cell pack of contaminants, it is washed with isotonic saline (0.9% sodium chloride solution).
Note: Trace amounts of red blood cell contamination may cause the effluent to have a slightly reddish tint.
After washing, the clean, packed red blood cells are pumped from the bottom of the bowl to the holding bag, via the attached tubing.
The blood should be transferred to a blood transfer bag and then to the patient.
English
M967226A006 1B Medtronic Confidential
8
PSJ - Size-selectable package manual 02-MAY-2018
502431-132
Composed: 2018-06-08 06:06:55