Background: There was a lack of studies on the association between Human Cytomegalovirus
(HCMV) infection and prognosis of ischemic stroke, although it was indicated that
human cytomegalovirus DNA has played a role in several cardiovascular disorders.
Objective: To examine the association between HCMV IgM levels in the acute phase and death
and major disability after 2 weeks of acute ischemic stroke.
Methods: Serum HCMV IgM levels were measured in 1150 participants in China. Study outcome
data on major disability and combined outcome of death and major disability were collected at 2
weeks after stroke onset or hospital discharge.
Results: After 2 weeks of follow-up, 351 participants (30.52%) suffered from a major disability or
died. Serum HCMV IgM was correlated with the combined outcome of death and major disability
significantly after adjustment confounding factors. For example, the highest quartile of HCMV
IgM was related to an odds ratio (95% confidence interval) of 1.84 (1.12-3.11) for the combined
outcome. Risk prediction of the combined outcome was improved by the addition of serum HCMV
IgM to conventional risk factors (net reclassification index 25.41%, p＝0.0002; integrated discrimination
improvement 0.70%, p＝0.04377).
Conclusions: Elevated serum HCMV IgM levels in the acute phase of ischemic stroke were correlated
with increased risk of combined outcome of death and major disability, indicating that serum
HCMV IgM could be an important predictive factor for poor prognosis of ischemic stroke.