2. O2 conc required by pt
O2 conc achieved by the delivery device
Importance of accuracy of device
Client comfort and client mobility
DELIVERY SYSTEM- SELECTION
5. Classification
Low flow systems
– do not provide constant FIO2
– Part of tidal volume is provided by room
air.
– Ex: nasal cannula, simple mask , rebreather
mask .
High flow systems
– deliver specific and constant percent of
oxygen .
– Ex: Venturi mask .
6. Nasal cannula (prongs):
It is a disposable.
plastic devise with two protruding
prongs for insertion into the nostrils,
connected to an oxygen source.
Used for low-medium concentrations of
Oxygen (25-45%).
7.
8. Easy to use
Well tolerated
Comfortable for long period
Patient can eat and talk easily.
ADVANTAGES
10. Face mask
The simple Oxygen mask
The partial rebreather mask:
The non rebreather mask:
The venturi mask:
11. The simple Oxygen mask
Simple mask is made of
clear, flexible , plastic or
rubber that can be molded
to fit the face.
It is held to the head with
elastic bands.
Some have a metal clip that
can be bent over the bridge
of the nose for a
comfortable fit.
12. The simple Oxygen mask
It delivers 35% to 60% oxygen .
A flow rate of 6 to 10 liters per
minute.
Often it is used when an increased
delivery of oxygen is needed for
short periods
13. DisadvantagesAdvantagesPriority Nursing
Interventions
Amount
Delivered
F1o2
(Fraction
Inspired
Oxygen)
Method
Tight seal required
to deliver higher
concentration
Difficult to keep
mask in position over
nose and mouth
Potential for skin
breakdown (pressure,
moisture)
Wasting
Uncomfortable for pt
while eating or talking
Expensive with nasal
tube
Can
provide
increased
delivery of
oxygen for
short period
of time
Monitor client
frequently to
check
placement of
the mask.
Support client
if
claustrophobia
is concern
Secure
physician's
order to replace
mask with nasal
cannula during
meal time
Low Flow
6-10 Lmin
35%-60%
Simplemask
15. The non rebreather mask
This mask provides the highest
concentration of oxygen (95-
100%) at a flow rate6-15 L/min.
The bag is an oxygen reservoir
1 L reservoir bag
16. The non rebreather mask
When the patient exhales
air. the one-way valve
closes and all of the expired
air is deposited into the
atmosphere, not the
reservoir bag.
In this way, the patient is
not rebreathing any of the
expired gas.
18. DisadvantagesAdvantagesPriority Nursing
Interventions
Amount
Delivere
d
F1o2
Method
Impractical for
long term Therapy
Malfunction can
cause CO2 buildup
suffocation
Expensive
Feeling of
suffocation
Uncomfortable
Costly
Delivers the
highest possible
oxygen
concentration
Suitable for pt
breathing
spontaneous
with sever
hypoxemia
Maintain flow
rate so reservoir
bag collapses only
slightly during
inspiration
Check that valves
and rubber flaps
are function
properly (open
during expiration )
Monitor SaO2
with pulse oximeter
Low
Flow
6-15 L
min
80%-
100%
Non
rebreatherMASK
19. Venturi mask
It is high flow
concentration of oxygen.
Oxygen from 40 - 50%
At liters flow of 4 to 15
L/min.
The mask is so
constructed that there is
a constant flow of room
air blended with a fixed
concentration of oxygen
20. The venturi mask
is designed with wide- bore tubing and
various color - coded jet adapters.
Each color code corresponds to a precise
oxygen concentration and a specific liter
flow.
The venturi system,
Room air dilutes the oxygen entering the
tubing to a certain concentration
The amount of air drawn in is determined
by the size of the orifice (jet adapter).
21. The venturi mask
The narrower the jet adapter,
the greater the air dilution, and the
lower the concentration of oxygen.
Operate on Bernoulli principle
- As gas flow under pressure at rapid
flow rate an area of pressure develops
lateral to the small opening and lead to
entrainment of room air through the side
port.
22.
23.
24. COLOUR OF ADAPTER % FIO2
Blue 24
Yellow 26
White 28
Green 30
Pink 35
Orange 40