Assessment of upper airway anatomy in awake, sedated and anaesthetised patients using magnetic resonance imaging.
Anaesth Intensive Care
; 22(2): 165-9, 1994 Apr.
Article
em En
| MEDLINE
| ID: mdl-7880227
ABSTRACT
Magnetic Resonance Imaging was used to quantify the effects of 1. sedation and 2. general anaesthesia with a laryngeal mask airway (LMA) in place on the minimum antero-posterior (A-P) diameters of the naso-, oro- and hypopharynx and on the angle of the epiglottis relative to the adjacent posterior pharyngeal wall. Median sagittal T1-weighted images of the pharynx were obtained in 46 patients (16 awake, 14 sedated, 16 under general anaesthesia). In sedated patients, the A-P diameters of the pharynx were less than in awake patients, in particular at the levels of the epiglottis and soft palate. General anaesthesia and placement of a LMA was also associated with a reduced A-P diameter at the level of the soft palate, but with increased diameters at the levels of the tongue and epiglottis. Placement of a LMA caused abnormal downfolding of the epiglottis in most cases but this did not cause clinically significant airway obstruction.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Faringe
/
Conscientização
/
Imageamento por Ressonância Magnética
/
Sedação Consciente
/
Máscaras Laríngeas
/
Anestesia Geral
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Anaesth Intensive Care
Ano de publicação:
1994
Tipo de documento:
Article