Breathing Circuits and Airway (Garcia) Flashcards
1
Q
Circle system
A
- rebreathing system
2
Q
Non-Rebreathing system
A
- expired air isn’t recycled
3
Q
Unidirectional valves
A
- allow flow in only one direction
- no rebreathing of CO2
- may stick with moisture
- may dislodge from housing
4
Q
valve most likely to fail
A
expiratory valve
5
Q
Non-rebreathing circuits do not have
A
unidirectional valves
6
Q
Breathing tubes
A
- Corrugated-prevents kinking
- transparent plastic
- light (less drag)
- Adult and pediatric size
- two limbs
- coaxial
7
Q
recognizing funky breathing tubes
A
One end fitted for a valve
8
Q
Blue (or green….?) breathing tube has one….
A
as inspiratory valve
-check by putting on a bag and squeezing, valve that opens is inspiratory valve
9
Q
Breathing bag
A
- used as reservoir
- used to deliver breaths
- can be used to count RR
- Some protection against excessive pressure
10
Q
If pop-off valve stays closed
A
patient dies from CARDIAC ARREST
11
Q
Checking for leaks
A
- canister
- unidirectional valves
- reservoir bag
- hoses
- connections
*Close pop off valve
12
Q
Circuit system
Advantages
A
- rebreathing of expired gas after CO2 elimination
- keep heat and moist
- more economic on O2 and inhalent
- Lower O2 flows
- less environmental contamination
13
Q
circuit system
Disadvantages
A
- lots of parts
- more likely to leak
- difficult to clean
- not easily moved
- controlled ventilation: hypocarbia
14
Q
Non rebreathing systems
A
- Elimination of CO2 by high O2 flow
- Usually patient < 3kg
- High O2 flows: 100-200 mls/kg
- WASTEFUL
- Different systems: Bain system used most
15
Q
Mechanism that eliminates CO2 in a non-rebreathing circuit
A
High flow of oxygen
