Continuous end-tidal carbon dioxide monitoring during normofrequent jet-ventilation.
BACKGROUND
Continuous end-tidal carbon dioxide (ETCO2) monitoring during normofrequent jet-ventilation (NFJV) has not previously been successful and no correspondence between ETCO2 and arterial carbon dioxide (PaCO2) demonstrated.


METHODS
During NFJV jet-ventilation in 19 healthy volunteers, continuous ETCO2 was measured and compared to PaCO2 values. The original ETCO2 sampling line from our Datex CO2 measuring equipment was placed longitudinally against a suction catheter and both were wrapped with aluminium foil. They were placed 4-5 cm above the carina and the position was verified with a fiberoptic bronchoscope.


RESULTS
The correlation between methods gave a Pearson's product moment correlation (r value) of 0.836, significant at the P < 0.001 level, indicating a close correlation between methods. A difference against mean scatter diagram confirmed that ETCO2 and PaCO2 measurements are of equal value in monitoring healthy patients during NFJV.


CONCLUSIONS
A valuable method of continuous ETCO2 monitoring during NFJV is presented.
Bach
L F
LF
Department of Anaesthesiology, Viborg Hospital, Denmark.
Wanner-Olsen
H
H
Andersen
B N
BN
Madsen
I K
IK
Kruse
S
S
D000328:Adult; D002245:Carbon Dioxide / Q000032:analysis*; D006801:Humans; D016343:Monitoring, Intraoperative; D012121:Respiration, Artificial
D002245:Carbon Dioxide