Related Experiment Video
Updated: Sep 24, 2025

Intracranial Subarachnoidal Route of Infection for Investigating Roles of Streptococcus suis Biofilms in Meningitis in a Mouse Infection Model
Published on: July 1, 2018
Community-Acquired Meningitis Complicated by Pyogenic Ventriculitis: A Case Report
Pabitra Adhikari1, Drashti Antala1, Bimatshu Pyakuryal1
1Internal Medicine, AMITA Health Saint Francis Hospital, Evanston, USA.
Abstract:
Ventriculitis is the inflammation of the ependymal lining of the ventricles in the brain which usually occurs as a complication of meningitis, intraventricular devices, intracranial surgery, or brain abscess. Common clinical features include fever, altered mental status, headache, and neck rigidity. Some commonly associated organisms are Streptococcus, gram-negative Bacillus, Staphylococcus, and Meningococcus. Here, we report the case of a 57-year-old female presenting with fever, headache, and altered mental status, along with positive physical examination findings of Kernig's and Brudzinski's signs without any focal neurological deficits. Cerebrospinal fluid analysis findings were consistent with bacterial infection with neutrophilic leukocytosis, high protein, and low glucose. The blood culture was positive for Streptococcus pneumoniae. Magnetic resonance imaging was negative for enhancement of the meninges but showed fluid-filled layering in the ventricles consistent with pyogenic ventriculitis. The patient improved clinically within three days of initiation of empiric antibiotics.
Insights
Ventriculitis, a brain ventricle inflammation, can present with fever and altered mental status. Prompt antibiotic treatment led to rapid clinical improvement in a patient with Streptococcus pneumoniae infection.
Area of Science:
- Neuroscience
- Infectious Diseases
- Radiology
Background:
- Ventriculitis is brain ventricle inflammation, often a complication of meningitis or surgery.
- Clinical signs include fever, altered mental status, headache, and neck rigidity.
- Common causative agents include Streptococcus, gram-negative bacilli, Staphylococcus, and Meningococcus.
Observation:
- A 57-year-old female presented with fever, headache, and altered mental status.
- Physical exam revealed Kernig's and Brudzinski's signs without focal neurological deficits.
- Cerebrospinal fluid analysis indicated bacterial infection with neutrophilic leukocytosis, high protein, and low glucose.
Findings:
- Blood cultures identified Streptococcus pneumoniae.
- MRI showed fluid-filled layering in ventricles, indicative of pyogenic ventriculitis.
- Meningeal enhancement was notably absent on MRI.
Implications:
- This case highlights Streptococcus pneumoniae as a cause of pyogenic ventriculitis.
- Early empiric antibiotic therapy resulted in rapid clinical improvement.
- The findings underscore the importance of timely diagnosis and treatment for ventriculitis.
Related Concept Videos
Acute Pyelonephritis II: Diagnostic Studies and Management
Acute Pyelonephritis I: Introduction
Pneumonia III: Complications and Assessment
Pneumonia IV: Management
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
Pneumonia II: Pathophysiology

