[Behaviour of near-infrared cerebral oximetry readings during percutaneous carotid angioplasty]. / Valoración del comportamiento de la oximetría cerebral por infrarrojos durante la angioplastia percutánea de carótida interna.
Rev Esp Anestesiol Reanim
; 53(10): 633-8, 2006 Dec.
Article
em Es
| MEDLINE
| ID: mdl-17302077
ABSTRACT
BACKGROUND:
Transluminal percutaneous carotid angioplasty and stenting (CAS) carries a risk of cerebral ischemia, hemorrhage, or edema due to relative hyperemia and hemodynamic instability during and after the procedure. Noninvasive monitoring of near-infrared regional cerebral oxygen saturation (SrO2) offers an indirect way to estimate cerebral blood flow.OBJECTIVE:
To evaluate the behaviour of SrO2 during CAS and the usefulness of this variable for continuous monitoring of cerebral blood flow variation and neurological status. MATERIAL ANDMETHODS:
Prospective study of 25 patients scheduled for unilateral CAS under monitored anesthesia care. SrO, and other hemodynamic and clinical data were recorded. A change in SrO2 (deltaSrO2) of 15% or more in comparison with the baseline value and lasting more than 30 seconds was considered clinically significant. Neurological complications in the first 24 hours were also registered.RESULTS:
Baseline SrO, ranged from 51% to 75%. With administration of papaverine SrO2 values increased by a mean (SD) of 5.6% (6%) (P<.05 vs baseline). They decreased during angioplasty, -2.5% (5.7%) (P<.05 vs baseline), increased after 5 minutes, and fell again at 30 minutes to a level 3% (6.54%) above baseline. Two patients showed signs of elevated intracranial pressure after the procedures and also had ASrO2 readings exceeding 15%; measures to lower arterial hypertension reduced SrO2 in these patients.CONCLUSION:
High interindividual variability of absolute SrO2 values has been confirmed. SrO, fluctuates with maneuvers that change cerebral blood flow in the same way. Changes can precede the onset of other clinical signs.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oxigênio
/
Oximetria
/
Artéria Carótida Interna
/
Hipóxia Encefálica
/
Circulação Cerebrovascular
/
Monitorização Intraoperatória
/
Estenose das Carótidas
/
Angioplastia com Balão
/
Espectroscopia de Luz Próxima ao Infravermelho
Tipo de estudo:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
Es
Revista:
Rev Esp Anestesiol Reanim
Ano de publicação:
2006
Tipo de documento:
Article