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Published on: June 4, 2012
Major cerebral events in Staphylococcus aureus infective endocarditis: is anticoagulant therapy safe?
Rasmus V Rasmussen1, Ulrika Snygg-Martin, Lars Olaison
1Department of Cardiology, Gentofte University Hospital, Copenhagen, Denmark. ravera02@geh.regionh.dk
Insights
Anticoagulation may reduce the risk of major cerebral events in patients with Staphylococcus aureus infective endocarditis (IE). This study found no increased risk of cerebral hemorrhage with anticoagulation in these patients.
Area of Science:
- Cardiology
- Neurology
- Infectious Diseases
Background:
- Left-sided Staphylococcus aureus infective endocarditis (IE) poses a significant risk of major cerebral events.
- The role of anticoagulation in managing these events remains a critical clinical question.
Purpose of the Study:
- To investigate the impact of anticoagulation on major cerebral events in patients diagnosed with left-sided Staphylococcus aureus IE.
- To assess the safety and efficacy of anticoagulation in this patient population.
Main Methods:
- A prospective cohort study design was employed.
- The use of anticoagulation was evaluated in relation to major cerebral events at admission and during hospitalization.
Main Results:
- 40% of patients experienced major cerebral events, with ischemic stroke being the most common.
- Patients on anticoagulation had a significantly lower incidence of major cerebral events at admission (15% vs. 37%).
- No increased risk of cerebral hemorrhage was observed in patients receiving anticoagulation.
Conclusions:
- Anticoagulation is not associated with an increased risk of cerebral hemorrhage in Staphylococcus aureus IE.
- Anticoagulation demonstrated a reduced risk of cerebral events prior to antibiotic initiation.
- Current data support the continued use of anticoagulation in Staphylococcus aureus IE when clinically indicated.
Objectives:
To study the impact of anticoagulation on major cerebral events in patients with left-sided Staphylococcus aureus infective endocarditis (IE).
Methods:
A prospective cohort study; the use of anticoagulation and the relation to major cerebral events was evaluated separately at onset of admission and during hospitalization.
Results:
Overall, 70 out of 175 patients (40%; 95% CI: 33-47%) experienced major cerebral events during the course of the disease, cerebral ischaemic stroke occured in 59 patients (34%; 95% CI: 27-41%), cerebral infection in 23 patients (14%; 95% CI: 9-19%), and cerebral haemorrhage in 5 patients (3%; 95% CI: 0.5-6%). Patients receiving anticoagulation were less likely to have experienced a major cerebral event at the time of admission (15%) compared with those without anticoagulation (37%, p = 0.009; adjusted OR: 0.27; 95% CI: 0.075-0.96; p = 0.04). In-hospital mortality was 23% (95% CI: 17-29%), and there was no significant difference between those with or without anticoagulation.
Conclusions:
We found no increased risk of cerebral haemorrhage in S. aureus IE patients receiving anticoagulation. Anticoagulation was associated with a reduced risk of cerebral events before initiation of antibiotics. Data support the continuance of anticoagulation in S. aureus IE patients when indicated.
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