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Subarachnoid hemorrhage due to septic embolic infarction in infective endocarditis
Abstract:
During antibiotic therapy, a 56-year-old man with a Streptococcus bovis endocarditis developed an infarction of the right middle cerebral artery (MCA). Thirty hours after stroke onset, cranial computed tomography controls demonstrated a secondary subarachnoid hemorrhage, marked in the cistern of the right MCA. The latent period, cerebrospinal fluid analysis, angiographic and pathologic findings favor the assumption of a pyogenic arterial wall necrosis of the MCA due to a septic embolus. This pathomechanism of intracranial hemorrhage in infective endocarditis should be distinguished from a rupture of a mycotic aneurysm.
Insights
A patient with Streptococcus bovis endocarditis experienced a stroke and secondary brain hemorrhage. This intracranial hemorrhage was likely caused by septic emboli leading to arterial wall necrosis, distinct from mycotic aneurysm rupture.
Area of Science:
- Neurology
- Infectious Diseases
- Cardiology
Background:
- Infective endocarditis, particularly with Streptococcus bovis, poses a risk for embolic events.
- Cerebrovascular complications can arise from infective endocarditis.
Observation:
- A 56-year-old man with Streptococcus bovis endocarditis developed a right middle cerebral artery (MCA) infarction during antibiotic treatment.
- Cranial CT revealed a secondary subarachnoid hemorrhage in the right MCA cistern 30 hours post-stroke.
Findings:
- The clinical course, CSF analysis, and imaging suggest pyogenic arterial wall necrosis of the MCA.
- Septic emboli are implicated as the cause of MCA necrosis and subsequent hemorrhage.
- This mechanism differs from the rupture of a mycotic aneurysm.
Implications:
- Highlights a distinct pathway for intracranial hemorrhage in infective endocarditis.
- Emphasizes the need to differentiate septic emboli-induced arterial necrosis from mycotic aneurysms in endocarditis patients.
- Informs diagnostic and therapeutic strategies for cerebrovascular complications in infective endocarditis.