Perfusion - Blood collection and processing for autotransfusion

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1

name the 3 components of blood collection system.

1. Antiocoagulant

2. Suction tip

3. Reservoir

2

T/F

Aspiration techniques are similar for unwashed and washed blood recovery

True

3

The anticoagulant to blood ratio for heparin is ___mL heparinized saline to ___mL of recovered blood

15 mL of heparnized saline to 100 mL of recovered blood

4

T/F

Aspiration techniques are similar for unwashed and washed blood recovery.

True

5

T/F

Hemolysis can be caused by small-bore suction tips and coaspiration of air with blood increasing turbulence and shear forces during aspiration.

True

6

List the 3 functions of blood reservoir.

1. filter large debris

2. defoamer breaks down air

3. storage - collect blood

7

T/F

Two-port reservoirs are primarily used for autotransfusion

True.

Four port reservoirs can be used for autotransfusion and heart-lung bypass

8

Most collection reservoirs have gross filtration with a ____micron clot screen

120 micron clot screen

9

For patient reinfusion of recovered, washed red blood cells, a ____micronaggregate filter is recommended.

40-micron microaggregate

10

T/F

Vacuum levels should not exceed -200mm Hg. A vacuum setting of 80 to 150 mm Hg is recommended.

True

11

T/F

When the red blood cells are washed for patient reinfusion, all contaminants are removed. Therefore, autotransfusionists are exempt from the following universal precautions for handling blood.

False

12

List the following blood components in the order of their density.

___Leukocytes

___Erythrocytes

___Plasma

less dense to more dense

1. Plasma, 2. Leukocytes, 3. Erythrocytes

13

T/F

When blood components separate in a centrifuge bowl, red blood cells comprise the innermost layer

False.

Red blood cells are more dense therefore, they will compose the outermost layer

14

T/F

The fill rate will affect the hematocrit of the washed red blood cell unit because the red blood cells have less time to pack when run at a faster rate than recommended.

True

15

The centrifuge in Latham bowls spins at approximately ___rpm and the autoLog centrifuge spins at ___rpm for the separation of blood components.

5600 rpm / 10,000 rpm

16

T/F

For the autoLog bowl, the second fill rate is based upon the condition of the blood entering the bowl and is determined by the software.

False.

It is dependent on the hematocrit

17

In Latham-design technology, what 2 factors have a profound effect on the quality of the end-product?

wash speed and wash volume

18

T/F

Wash rates should never exceed the fill rate of the bowl.

True

19

For the Latham bowl systems. 95% or greater plasma washout is achieved with a volume approximately _____times the bowl.

For orthopedic cases, the wash volume recommended is _____times the volume capacity of the bowl.

3 to 4 times the bowl

for orthopedic its 7 to 10 times

20

T/F

For safe practices, washing cells in a partially filled bowl is recommended.

False.

21

Name the two types of anticoagulant

1. Heparin - potentiates the activity of antithrombin III

2. Citrate-based solutions