Stroke in community-acquired bacterial meningitis: a Danish population-based study
Jacob Bodilsen1, Michael Dalager-Pedersen1, Henrik Carl Schønheyder2
1Department of Infectious Diseases, Aalborg University Hospital, Mølleparkvej 4, PO Box 365, 9100 Aalborg, Denmark.
Insights
Stroke is a common complication in community-acquired bacterial meningitis (CABM), leading to worse outcomes. Atherosclerosis risk factors did not appear to influence stroke occurrence in these patients.
Area of Science:
- Neurology
- Infectious Diseases
- Epidemiology
Background:
- Stroke is a severe complication of community-acquired bacterial meningitis (CABM).
- The incidence, predisposing factors, and outcomes of stroke in CABM require further investigation, particularly concerning atherosclerosis risk factors.
- Understanding these aspects is crucial for managing CABM patients.
Purpose of the Study:
- To assess the incidence, predisposing factors, and outcomes of stroke in adult patients with CABM.
- To investigate the association between pre-existing atherosclerosis risk factors and stroke in CABM.
Main Methods:
- Retrospective population-based cohort study in the North Denmark Region from 1998 to 2010.
- Inclusion of all patients over 16 years of age diagnosed with CABM.
- Data retrieved from patient records; unfavourable outcome defined as Glasgow Outcome Scale score of 1-4, favourable as 5.
Main Results:
- 152 episodes of CABM were identified; 22 (14%) patients experienced a stroke (15 ischemic, 3 hemorrhagic, 4 combined).
- Stroke was not significantly associated with age or atherosclerosis risk factors.
- Stroke was linked to higher in-hospital mortality (27% vs. 16%), unfavourable outcomes (86% vs. 37%), and long-term sequelae (88% vs. 40%) among survivors.
Conclusions:
- Stroke is a frequent complication in adult CABM patients.
- Stroke in CABM is associated with increased mortality, unfavourable outcomes, and long-term sequelae.
- Stroke occurrence in CABM does not appear to be related to atherosclerosis risk factors.
Objectives:
Stroke is a serious complication in community-acquired bacterial meningitis (CABM), but the incidence, predispositions, and outcome need further clarification; this pertains in particular to the impact of pre-existing atherosclerosis risk factors. Therefore, we aimed to assess these features in a retrospective population-based cohort study.
Methods:
We included all patients over 16 years of age with CABM in North Denmark Region, 1998-2010. All data were retrieved from the patient records. A Glasgow Outcome Scale score of 1-4 was defined as an unfavourable outcome and 5 as favourable.
Results:
We identified 152 episodes of CABM. In 22 (14%) of the episodes, the patient had a stroke; 15 strokes were ischaemic, three were haemorrhagic, and four were a combination of both. Age and atherosclerosis risk factors were not significantly associated with stroke. However, stroke was associated with a higher in-hospital mortality (27% vs. 16%; age adjusted risk ratio (age aj. RR) 1.43, 95% confidence interval (CI) 0.67-3.04), unfavourable outcome (86% vs. 37%; age adj. RR 2.09, 95% CI 1.59-2.75), and long-term sequelae among survivors (88% vs. 40%, age adj. RR 2.01, 95% CI 1.53-2.65) compared with patients without stroke.
Conclusions:
Stroke is a common complication among adult CABM patients and is associated with long-term sequelae and possibly also death. However, stroke seemed not to be related to atherosclerosis risk factors.
Related Concept Videos
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology
Viral Meningitis
Brain Abscess l: Introduction
Hemorrhagic Stroke l: Introduction
Hemorrhagic Stroke ll: Pathophysiology


