14 Operating instructions
4.5 Ventilation via an endotracheal tube
To prevent additional complications (overinflation of
the stomach with consequent aspiration), ventilation
via a correctly placed endotracheal tube is to be
aimed at wherever possible:
• Intubation
• Press the red ring on the COMBIBAG relief valve
downwards (pressure limit 60 mbar (6 kPa
(≈ 60 cmH
2
O)))
• Even with ventilation via an endotrachel tube,
one should aim for a pressure limit of 20 mbar
(2 kPa (≈ 20 cmH
2
O)) in order to limit the drop in
the heart circulation time caused by increase in
resistance in the pulmonary circulation.
4.6 Increasing the oxygen concentration
In emergency situations, oxygen concentrations
above that in the ambient air (21 vol. %), or even
100% oxygen may be indicated, since oxygen defi-
ciency often has to be reckoned with at the first sup-
ply phase. Any oxygen concentration can be
administered with the COMBIBAG resuscitator. Oxy-
gen concentrations up to 48% can be administered
directly via the oxygen socket on the intake connec-
tion. If a higher concentration of oxygen is to be ad-
ministered, an oxygen reservoir or a demand valve
can be used.
Connect corrugated hose
• Fit the oxygen reservoir into the cone on the in-
take socket and
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