Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
|
Reasons for filtration
|
prevention of embolism (arterial filter)
maintain sterility minimize "reperfusion injury" |
|
|
What is the main problem today with microemboli
|
lipids
|
|
|
lipid amount in brain is directly related to
|
CPB time
|
|
|
In the early days, where was the art filter
|
in the cardiotomy line (going from cardiotomy to venous reservoir
|
|
|
What specific kind of filter helps with fat elimination in the blood?
|
leukocyte depleting filters (systemic inflammatory response)
|
|
|
When were prebypass filters started
|
80s
|
|
|
What kinds of embolism are there?
|
biological (removes aggregates >40u)
gaseous foreign material (from manufacturer) |
|
|
What kind of oxygenator helped with macro emboli
|
bubble oxygenator
|
|
|
Excess post op charges are mainly from what
|
mediasinitis
|
|
|
What filter are the standard of care today
|
screen filters
|
|
|
Where are filters used
|
prebypass
cardiotomy gas cardioplegia art transfusion |
|
|
Usage rates for types of filters:
art gas transfusion prebypass cardioplegia (crystalloid and blood) |
92%
83% 80% 78% 46% |
|
|
pore size of gas filters
|
.2 u
|
|
|
rated flow of gas filters
|
40L/min
|
|
|
what kind of screen in gas filters
|
hydrophobic screen
|
|
|
tubing port sizes on prebypass filters
|
3/8 by 3/8
-or- 3/8 by 1/2 |
|
|
Pore range for prebypass filters
|
.2u-5u
|
|
|
What can a 0.2u filter remove?
|
microbes and endotoxins
|
|
|
rated flow for prebypass filters for an adult
|
6L/min
|
|
|
What does the rated flow for prebypass filters depend on?
|
size and pore
|
|
|
Why shouldn't prebypass filters run blood through?
|
hemolysis/ blockage
too small pore size |
|
|
Are prebypass filters directional?
|
YES
|
|
|
Crystalloid cardioplegia filters pore size?
|
0.2u
|
|
|
Crystalloid cardioplegia filters removes what...
|
debris, particles
microbes and endotoxins |
|
|
Crystalloid cardioplegia filters rated flow?
|
1L/min
|
|
|
Why do you leave air in the cardioplegia filter tip
|
to see the dripping and administration of cardioplegia
|
|
|
How should you prime cardioplegia filter
|
retrograde to keep air on outlet side
|
|
|
Why initially 40u filters?
|
That is the size of the pulmonary arterioles that take blood from veins through the lungs
|
|
|
Blood transfusion filter pore size
|
40u
|
|
|
Blood transfusion filter rated flow
|
1L/min****
|
|
|
type of filter on Blood transfusion filter
|
screen filter made of polyester
|
|
|
What is the maximum blood that you can give without immune activation?
|
2 units
|
|
|
All blood givin needs to be filtered
|
True ;)
|
|
|
Cardioplegia leukocyte depletion filter priming volume and efficiency
|
200mL and >95%
|
|
|
What type of surgeries are they used
|
lung transplants
|
|
|
Pall Leukoguard bc blood cardioplegia filter is what size and rated flow
|
40u and 500mL/min
|
|
|
The longer the ischemic time the _______damage to the leukocytes
|
more
|
|
|
what do leukocytes secrete during increased injury?
|
Elastase
|
|
|
Leukocyte depletion filter on artial rated flow
|
7L/min
|
|
|
How many minutes minimum should you use leukocyte filters (art) to reduce leukocytes
|
10-20 minutes
|
|
|
Places to put LDF
|
Placed in-line (with bypass line)
Art Line LDF (employed after A. cross clamp is removed) Cardioplegia LDF (during termninal dose of blood cardioplegia) |
