Cerebral arterial oxygen saturation measurements using a fiber-optic pulse oximeter.
Neurocrit Care
; 13(2): 278-85, 2010 Oct.
Article
en En
| MEDLINE
| ID: mdl-20390381
ABSTRACT
BACKGROUND:
A pilot investigation was undertaken to assess the performance of a novel fiber-optic cerebral pulse oximetry system. A fiber-optic probe designed to pass through the lumen of a cranial bolt of the type used to make intracranial pressure measurements was used to obtain optical reflectance signals directly from brain tissue.METHODS:
Short-duration measurements were made in six patients undergoing neurosurgery. These were followed by a longer duration measurement in a patient recovering from an intracerebral hematoma. Estimations of cerebral arterial oxygen saturation derived from a frequency domain-based algorithm are compared with simultaneous pulse oximetry (SpO2) and hemoximeter (SaO2) blood samples.RESULTS:
The short-duration measurements showed that reliable photoplethysmographic signals could be obtained from the brain tissue. In the long-duration study, the mean (±SD) difference between cerebral oxygen saturation (ScaO2) and finger SpO2 (in saturation units) was -7.47(±3.4)%. The mean (±SD) difference between ScaO2 and blood SaO2 was -7.37(±2.8)%.CONCLUSIONS:
This pilot study demonstrated that arterial oxygen saturation may be estimated from brain tissue via a fiber-optic pulse oximeter used in conjunction with a cranial bolt. Further studies are needed to confirm the clinical utility of the technique.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Oxígeno
/
Oximetría
Tipo de estudio:
Diagnostic_studies
Límite:
Aged
/
Female
/
Humans
Idioma:
En
Revista:
Neurocrit Care
Asunto de la revista:
NEUROLOGIA
/
TERAPIA INTENSIVA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Reino Unido