[Pressure exerted on tracheal cuffs in intubation in the presence of nitrous oxide].
OBJECTIVE
To compare the time course of endotracheal tube cuff pressures in presence of nitrous oxide (N2O), obtained in a tracheal model with those measured during clinical anaesthesia.


METHODS
Experimental and clinical prospective study.


METHODS
Twelve brands of low-pressure tracheal tubes.


METHODS
The pressure changes in the cuffs were measured over a three-hour-period in presence of a N2O (50 vol%)/O2 (50 vol%) mixture and mechanical ventilation, the tube being inserted either in a tracheal model or in the trachea of patients during general anaesthesia.


RESULTS
The results obtained in vitro were correlated with those measured in the patients. Therefore the tracheal model is a helpful guide for the choice of endotracheal tubes.
Le Du
I
I
Centrale d'achat du matériel stérile et du pansement, CHU Rennes, France.
Faucheux
M
M
Lurton
Y
Y
Basle
B
B
Mallédant
Y
Y
D000399:Air Pressure; D000769:Anesthesia, Inhalation; D006801:Humans; D007442:Intubation, Intratracheal / Q000009:adverse effects* / Q000295:instrumentation; D009609:Nitrous Oxide; D011312:Pressure; D011446:Prospective Studies; D012121:Respiration, Artificial; D013997:Time Factors; D014132:Trachea / Q000502:physiology*
D009609:Nitrous Oxide