Methane accumulation during closed-circuit anesthesia.
Anesth Analg
; 79(3): 545-7, 1994 Sep.
Article
en En
| MEDLINE
| ID: mdl-8067561
When using the closed-circuit PhysioFlex apparatus for ventilating patients with an O2/air mixture during total intravenous anesthesia (TIVA) for gynecologic laparoscopy, we noticed that the built-in infrared analyzer indicated unexpected values for halothane. In 10 ASA grade I or II patients, the breathing gases were analyzed at the end of the ventilation for the presence of methane, which could be traced in all patients. Mean concentration was 861 ppm after a mean closed-circuit anesthesia time lasting 78 min. The unexpected halothane concentration at the time of gas sampling indicated an average of 1.0%. The anesthetic vapor analysis by infrared absorption is clearly disturbed by the presence of methane.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Anestesia por Circuito Cerrado
/
Metano
Límite:
Adult
/
Humans
Idioma:
En
Revista:
Anesth Analg
Año:
1994
Tipo del documento:
Article
País de afiliación:
Bélgica
Pais de publicación:
Estados Unidos