624074/07 6-3
6.2 Breathing circuit
WARNING
• To prevent breathing difficulties resulting from
blocked gas passages, visually inspect for possi-
ble kinking of the very thin neonatal ET tubes.
• Dead space ventilation is harmful and can hap-
pen at any tidal volume settings.
NOTE:
You must consider (anatomic) dead space when deter-
mining the appropriate tidal and minute volumes for
neonatal patients. Artificial airways (such as: Y-piece,
flow sensor, ET tube, CO
2
airway adapter) can increase
the dead space slightly.
Use an neonatal breathing circuit with 10 mm ID tubes to ven-
tilate your neonatal patient. Do not use an adult or pediatric
breathing circuit.
A heating wire can noticeably increase the inspiratory resis-
tance of the neonatal breathing circuit.
6.3 Flow sensor
CAUTION
When a change of patient profile is necessary from
from
Neonatal
to
Pediatric
, you must first
change and calibrate the flow sensor.
The Infant flow sensor can only be used when the
Neonatal
patient profile is selected. You CANNOT
use the Infant flow sensor for pediatric applica-
tions.
The infant flow sensor has a dead space of < 1.3 ml.
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