The Effect of Pulsatility Index on Infarct Volume in Acute Lacunar Stroke
Yonsei Medical Journal
; : 950-955, 2016.
Artigo
em Inglês
| WPRIM (Pacífico Ocidental)
| ID: wpr-63327
Biblioteca responsável:
WPRO
ABSTRACT
PURPOSE:
Lacunar stroke, in the context of small vessel disease, is a type of cerebral infarction caused by occlusion of a penetrating artery. Pulsatility index (PI) is an easily measurable parameter in Transcranial Doppler ultrasound (TCD) study. PI reflects distal cerebral vascular resistance and has been interpreted as a surrogate marker of small vessel disease. We hypothesized that an increased PI, a marker of small vessel disease, might be associated with a larger infarct volume in acute lacunar stroke. MATERIALS ANDMETHODS:
This study included 64 patients with acute lacunar stroke who underwent TCD and brain MRI. We evaluated the association between the mean PI value of bilateral middle cerebral arteries and infarct volume on diffusion-weighted MRI using univariate and multivariate linear regression.RESULTS:
The mean infarct volume and PI were 482.18±406.40 mm3 and 0.86±0.18, respectively. On univariate linear regression, there was a significant positive association between PI and infarct volume (p=0.001). In the multivariate model, a single standard deviation increase of PI (per 0.18) was associated with an increase of 139.05 mm3 in infarct volume (95% confidence interval, 21.25 to 256.85; p=0.022).CONCLUSION:
We demonstrated that PI was an independent determinant of infarct volume in acute lacunar stroke. The PI value measured in acute stroke may be a surrogate marker of the extent of ischemic injury.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Resistência Vascular
/
Fluxo Pulsátil
/
Modelos Lineares
/
Infarto Cerebral
/
Estudos Retrospectivos
/
Ultrassonografia Doppler Transcraniana
/
Artéria Cerebral Média
/
Imagem de Difusão por Ressonância Magnética
/
Acidente Vascular Cerebral Lacunar
Tipo de estudo:
Estudo observacional
Limite:
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2016
Tipo de documento:
Artigo