Operating Principles - Ambu Mark IV Manual Del Usuario

4. Operating principles

Q shows how the ventilation air flows into the resuscitator and to and
from the patient during manual ventilation as well as when the patient
respires spontaneously.
The air flow remains unchanged when the patient spontaneously
respires through the device.
Q 1.1: Air, 1.2: Oxygen inlet, 1.3: Patient, 1.4: Expiration,
1.5: Outlet cap (optional accessory)
The valve disc guide pin in the patient valve is a visible indicator of
correct functioning of the unit. The user should always - before as well
as during use - check that the valve guide moves forward on inspira-
tion and backward on expiration. See W.
W 2.1: Guide pin (forward), 2.2: Insufflation or spontaneous inspira-
tion, 2.3: Guide pin (backward), 2.4: Expiration
5. Instructions for use
5.1. Ventilation with face mask - see
Clear mouth and airway.
Use recommended techniques to position the patient correctly to keep
the airways open.
Place the mask so that it makes an airtight fit with the patient's face.
Hold the mask firmly against the face while tilting the head correctly
for the airways to be kept open.
WARNING
Thorough practice in the correct application of the facemask is impor-
tant before use of the resuscitator. Lack of practice may result in no or
reduced ventilation.
All manuals and user guides at all-guides.com
E
Squeeze the bag with one hand.
While insufflating, check that the patient's chest is rising.
Loosen the grip on the bag, listen for the expiratory air from the
patient valve, and check that the chest is lowering. In case of resis-
tance on insufflation, check the airways for foreign bodies, or place
the head in the correct position.
The frequency of ventilation may vary. Follow the current nationally or
internationally recommended ventilation frequencies.
In case of the patient vomiting under mask ventilation, the patient's
airways must immediately be cleared of vomit. Before resuming venti-
lation, squeeze the bag a few times without the mask being in contact
with the face.
Check that insufflation and expiration are unhindered.
The patient valve can be disassembled and cleaned if large volumes of
vomit block the free airflow in the valve.
If the valve is disassembled and cleaned, the device must be tested
before resuming ventilation. (See Section 8.1)
Administer oxygen according to medical indications.
See Section 5.2 to 5.4.
5.2. Oxygen enrichment without oxygen reservoir
bag - see
R
Extra oxygen is administered by connecting oxygen to the O
tor of the inlet valve.
T
shows examples of O percentages obtainable with different
2
volumes and frequencies without the use of an oxygen reservoir bag.
V : Tidal volume, Frequency
T f :
connec-
2
5
English