Inadequate gas supply to patients with an adjustable pressure-limiting valve in the fully opened position.
J Anesth
; 24(4): 626-9, 2010 Aug.
Article
em En
| MEDLINE
| ID: mdl-20464429
ABSTRACT
With spontaneous ventilation, sufficient exhaust resistance at the adjustable pressure-limiting (APL) valve when fully opened ensures that the reservoir bag fills and adequately supplies gas to patients. A lack of exhaust resistance with the APL valve fully open caused inadequate gas supply to patients with four types of anesthesia machines SA2 (Dräger), Excel-210 SE (GE), Fabius (Dräger), and Cato (Dräger). Mechanically, the SA2 and Excel-210 SE APL valve systems, which are of the spring-loaded disc type positioned horizontally, cannot maintain sufficient exhaust resistance with the APL valve fully open. As for the Fabius and Cato, an exhaust valve independent of the APL valve should maintain sufficient exhaust resistance continuously. However, accumulated viscous substances on the thin diaphragm of the exhaust valve contributed to hindrance of diaphragm closure.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ventiladores Mecânicos
/
Anestesiologia
/
Erros de Medicação
Limite:
Humans
Idioma:
En
Revista:
J Anesth
Assunto da revista:
ANESTESIOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Japão