An electronic apparatus for early detection of changes in red cell content of blood during anaesthesia. A preliminary report.
S Afr Med J
; 76(4): 148-50, 1989 Aug 19.
Article
en En
| MEDLINE
| ID: mdl-2762954
ABSTRACT
An electronic apparatus was developed for anaesthetists to use to detect changes in red cell concentration during surgery. The mechanism is based on the relationship between the red cell content and the electrical conductivity of blood. In a pilot study of 170 blood samples, a correlation coefficient of 0.9806 was obtained between haematocrit and the instrument readings. To evaluate the instrument's performance in practice, and factors that might influence its readings, a series of 10 cases of aortic surgery were investigated. It is concluded that, although changes in electrolyte concentration, pH and temperature do affect the instrument's readings, these are insignificant compared with those of red cell content, and that the device can be used to indicate a drop in red cell concentration.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Hematócrito
/
Anestesiología
Tipo de estudio:
Diagnostic_studies
/
Evaluation_studies
/
Screening_studies
Límite:
Humans
Idioma:
En
Revista:
S Afr Med J
Año:
1989
Tipo del documento:
Article