Flashcards in Bruce's Embolus and filtration Final prep Deck (19)
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1
Emboli are divided into 3 categories, what are they ?
-Biological
-Foreign materials
-Gases
2
Fat emboli (SCADS) are generated from what ?
denaturation of lipoproteins
3
what is an "oily layer" floating at the top of the reservoir?
melted fat from the bovie
4
what is a "rusty red granular sediment" in the cardioplegia line?
?
5
Platelet size =
1-2 um
6
Erythrocyte size =
10 - 15 um
7
Leukocyte size =
10 - 15 um
8
2 mechanisms of filtration =
Impaction &
adsorption
9
Filters efficiency increases as ?
the Flow path becomes longer and narrower.
10
Observations with Depth filtration ?
microviscosity of stored blood > fresh blood
11
Mechanisms of screen filtration ?
Direct interception
12
Virus size ?
.01 um
13
Bacteria size ?
.5 - 1 um
14
Gas line filters are ?
hydrophobic, position above the level of the oxygenator.
15
Bubble Boyancy principal
"Flow Velocity"
V=Flow rate (Q) / Flow area (A)
16
Bubble Point Pressure Principal formula ?
P = 4Y / D
17
Depth or screen filters cannot filter the following 2 things.
Virus = .01 um
Bacteria = .5 - 1 um
18
Membrane filters filtration rating.
0.2 um
19
