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Rapid diagnosis of septic arthritis by coagglutination
Journal of Clinical Microbiology
|December 1, 1983
Abstract:
Pneumococcal capsular antigens were detected and serotyped by coagglutination in joint fluids and serum of a patient with septic arthritis within 1 h of obtaining the specimens. Pneumococcal antigens continued to be detected by coagglutination for 3 days, whereas cultures and Gram stains were negative after 1 day of antibiotic therapy.
Insights
Coagglutination rapidly detects pneumococcal antigens in septic arthritis joint fluid and serum. This method identifies bacterial antigens for longer than traditional cultures during antibiotic treatment.
Area of Science:
- Microbiology
- Immunology
- Clinical Diagnostics
Background:
- Septic arthritis requires rapid and accurate diagnosis for effective treatment.
- Traditional diagnostic methods like bacterial cultures can be slow and may yield false negatives after antibiotic initiation.
- Early detection of causative pathogens is crucial for patient outcomes.
Observation:
- Pneumococcal capsular antigens were identified and serotyped using coagglutination.
- Detection occurred in both joint fluid and serum samples from a patient with septic arthritis.
- Testing was completed within one hour of specimen collection.
Findings:
- Coagglutination successfully detected pneumococcal antigens within one hour.
- Antigens remained detectable by coagglutination for three days.
- Standard cultures and Gram stains became negative after only one day of antibiotic therapy.
Implications:
- Coagglutination offers a rapid diagnostic tool for septic arthritis.
- This method enhances early pathogen detection, even after antibiotic administration.
- Coagglutination may improve treatment monitoring and patient management in septic arthritis cases.