Etiological mechanisms of isolated pontine infarcts based on arterial territory involvement.

Abstract:

BACKGROUND:Pontine infarcts can be classified into four regions based on the vascular anatomy: anteromedial, anterolateral, lateral and posterior. The purpose of this study was to determine if different etiological mechanisms are responsible for these four types of pontine infarcts. METHODS:We studied consecutive patients within 7 days of symptom onset who had isolated pontine infarcts on diffusion-weighted imaging. The factors associated with infarct topography were determined by multivariate logistic regression analysis. RESULTS:A total of 205 patients were enrolled (78 women; mean age, 72 ± 11 years). The distribution of the infarcts was anteromedial in 73%, anterolateral in 14%, lateral in 3% and posterior in 10%. In multivariate logistic regression analysis, major cardioembolic sources (odds ratio (OR), 4.17; 95% confidence interval (CI), 1.21-14.1) and previous ischemic stroke (OR, 2.92; 95% CI, 1.09-7.89) were positively associated with lateral or posterior infarcts compared with anteromedial infarcts. In contrast, advanced age (OR, 0.55; 95% Cl, 0.35-0.81 per 10-year increase), diabetes mellitus (OR, 0.31; 95% CI, 0.11-0.80) and basilar artery disease (OR, 0.27; 95% CI, 0.08-0.75) were negatively associated with lateral or posterior pontine infarcts. CONCLUSIONS:Baseline characteristics were significantly different among patients with isolated pontine infarcts in different topographic locations. Our results suggest that cardioembolism is relatively common in lateral or posterior pontine infarcts, whereas basilar artery atherosclerosis is more common in anteromedial infarcts.

journal_name

J Neurol Sci

authors

Kobayashi J,Ohara T,Minematsu K,Nagatsuka K,Toyoda K

doi

10.1016/j.jns.2014.01.039

subject

Has Abstract

pub_date

2014-04-15 00:00:00

pages

113-7

issue

1-2

eissn

0022-510X

issn

1878-5883

pii

S0022-510X(14)00063-X

journal_volume

339

pub_type

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