1 AGM Flashcards
High Pressure Circuit
70-220 psi
cylinders
Oxygen
green
2000 psi
660L cylinder capacity
*gas in cylinder
Carbon Dioxide
gray
838 psi
1590 L cylinder capacity
gas & liquid in cylinder
Nitrous Oxide
blue
745 psi
1600L cylinder capacity
gas & liquid in cylinder
Medical Air
yellow
1800 psi
600L cylinder capacity
gas in cylinder
Mesh Size for Soda Lime
4-8
Intermediate Pressure System
40-50 psi
pipeline inlet, pressure gauges
Free Floating Valves
prevents leaks, moves in direction of flow
found in hanger yoke system
Ball & Spring Valves
like oxygen flush valve
Oxygen Flush Valve
“oh shit” valve
delivers oxygen at 35-75 L/min
risk for barotrauma
Diaphragm Valve
1st stage regulator
2nd stage regulator
Low Pressure System
16 psi
flow meter tube, vaporizers
Proportioning Systems
prevent hypoxic delivery of gases
Copper Kettle
most basic vaporizer, not still in use
Open System
no mask on face
limited use, good for peds
Semi-Open System
mask on face (mapelson)
room air and anesthetic
carbon dioxide will accumulate under mask
ex.) bain circuit
Pethick’s Test
Tests bain circuit
if bag deflates –> inner tubing intact (valsalva)
if bag inflates –> inner tube damaged
Semi-Closed System
mask on face
no room air inspired
has pop off valve
>20cm = override esophageal sphincter
Closed System
rebreathing of all gases
Degredation of inhaled anesthetics produces
compound A
carbon monoxide
fire & extreme heat
Hydrophobic HME
membrane
Hygroscopic HME
foam
wet –> may increase resistance
overall more effective of the HME’s
VCV
Volume Controlled Ventilation
constant volume
pressure changes
good for paralyzed with good compliance
PCV
Pressure Controlled Ventillation
constant inspiratory pressure
variable volume delivery
PSV
Pressure Support Ventilation
detects inspiratory effort and augments spontaneous breaths
-can also set expiratory PEEP
SIMV
Synchronized Intermittent Mandatory Ventilation
VCV or PCV + PSV
