Bruce's Embolus and filtration Final prep

Question 1

Emboli are divided into 3 categories, what are they ?

Answer 1

• Biological
• Foreign materials
• Gases

Question 2

Fat emboli (SCADS) are generated from what ?

Answer 2

denaturation of lipoproteins

Question 3

what is an “oily layer” floating at the top of the reservoir?

Answer 3

melted fat from the bovie

Question 4

what is a “rusty red granular sediment” in the cardioplegia line?

Answer 4

?

Question 5

Platelet size =

Answer 5

1-2 um

Question 6

Erythrocyte size =

Answer 6

10 - 15 um

Question 7

Leukocyte size =

Answer 7

10 - 15 um

Question 8

2 mechanisms of filtration =

Answer 8

Impaction &

adsorption

Question 9

Filters efficiency increases as ?

Answer 9

the Flow path becomes longer and narrower.

Question 10

Observations with Depth filtration ?

Answer 10

microviscosity of stored blood > fresh blood

Question 11

Mechanisms of screen filtration ?

Answer 11

Direct interception

Question 12

Virus size ?

Answer 12

.01 um

Question 13

Bacteria size ?

Answer 13

.5 - 1 um

Question 14

Gas line filters are ?

Answer 14

hydrophobic, position above the level of the oxygenator.

Question 15

Bubble Boyancy principal

“Flow Velocity”

Answer 15

V=Flow rate (Q) / Flow area (A)

Question 16

Bubble Point Pressure Principal formula ?

Answer 16

P = 4Y / D

Question 17

Depth or screen filters cannot filter the following 2 things.

Answer 17

Virus = .01 um 
Bacteria = .5 - 1 um

Question 18

Membrane filters filtration rating.

Answer 18

0.2 um

Question 19

Membrane filters 3 mechanisms of filtration

Answer 19

• direct interception
• adsorption
• charge interactions