Datex-Ohmeda S/5 monitors
Document No. 800 1009-1
36
4.1.2
Patient spirometry
Problem
Possible clinical cause
Possible technical cause
Action
insp TV>exp TV
•
leak in lungs
•
spirometry tube leak
•
check leakages --
perform leak test
•
ET tube cuff leak
•
water inside D-lite or tubings
•
change tubings
and D-lite
•
don’t use active
humidification
•
another side stream gas
sampling between D-lite and
patient
•
connect gas
sampling only and
always to D-lite
•
D-fend leaks
•
check D-fend
exp TV> insp TV
•
spirometry tube leak
•
check leakages --
perform leak test
•
water inside D-lite or tubings
•
change tubings
and D-lite
•
don’t use active
humidification
loop overscale
•
wrong scale selected
•
change scaling
monitored volumes < set
volumes
•
leak between ventilator and
D-lite
•
check ventilator
connections
strongly vibrating loop
•
mucus in ET tube
-
•
suction the patient
•
water or secretions in hoses
or D-lite
•
change dry D-lite
and/or empty the
water from hoses
too large or too small
volumes
•
wrong mode vs sensor
selection
•
incompatible between
selected sensor and sensor
used
•
check mode and
sensor
−
D-lite for adult
−
Pedi-lite for
pediatric