Related Experiment Video
Updated: Aug 12, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
Published on: February 23, 2014
Overwhelming postsplenectomy infection in a patient with penicillin-resistant Streptococcus pneumoniae
1Bon Secours Hospital, Grosse Pointe, Mich 48230, USA.
Abstract:
Overwhelming postsplenectomy infection is a fulminant process that carries a poor prognosis. Streptococcus pneumoniae is the most likely organism to cause disease. Infection with penicillin-resistant S pneumoniae is increasing; its prevalence ranges from 6.6% to 50% in the United States. If meningeal involvement with resistant pneumococcus is suspected, it should be treated with a third-generation cephalosporin and vancomycin hydrochloride. The long-term management of asplenic patients should focus on preventing infection. The current guidelines and recommendations for vaccination are reviewed. Educating these patients to contact their physician at the first sign of minor illness is also beneficial. The use of antibiotic prophylaxis remains a controversy and is best left to the discretion of the physician.
Insights
Overwhelming postsplenectomy infection, often caused by Streptococcus pneumoniae, has a high mortality rate. Prompt treatment and preventative measures, including vaccination, are crucial for asplenic patients.
Area of Science:
- Infectious Diseases
- Immunology
- Microbiology
Background:
- Overwhelming postsplenectomy infection (OPSI) is a life-threatening complication following spleen removal.
- Streptococcus pneumoniae is the predominant pathogen, with increasing rates of penicillin resistance.
Observation:
- Penicillin-resistant S. pneumoniae prevalence in the US ranges from 6.6% to 50%.
- Meningeal involvement with resistant pneumococcus necessitates treatment with third-generation cephalosporins and vancomycin hydrochloride.
Findings:
- Long-term management emphasizes infection prevention in asplenic individuals.
- Vaccination guidelines and patient education on early illness recognition are key strategies.
- The role of antibiotic prophylaxis in asplenic patients remains a clinical controversy.
Implications:
- Highlights the critical need for vigilant infection control in postsplenectomy patients.
- Underscores the importance of updated vaccination protocols and patient awareness.
- Informs clinical decision-making regarding antibiotic prophylaxis for asplenic populations.
Related Concept Videos
Pneumonia I: Introduction
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
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 Pyelonephritis II: Diagnostic Studies and Management
Atypical Pneumonia
Pneumonia I: Introduction

