Related Experiment Videos
[Year to year changes in isolation frequencies of different bacteria from postoperative infections]
N Shinagawa1, J Yura, S Ishikawa
1First Department of Surgery, Nagoya City University Medical School.
Abstract:
Bacterial species isolated from postoperative infections during the period from July 1982 to June 1993 were studied regarding isolation frequencies of different species in different years in a joint research project involving nine (9) university hospitals in Japan. The obtained results are summarized as follows. (1) Altogether, 1,453 strains were isolated with 153 strains obtained during the most recent one year from July of 1992 through June of 1993. The most numerous source of isolation was postoperative intra-abdominal sepsis. (2) Gram-positive cocci were the most often isolated, among them methicillin-resistant Staphylococcus aureus was isolated in increasing frequencies until June, 1992. (3) In the last one year, Enterococcus spp. was isolated the most from postoperative infections followed by Staphylococcus spp. and Pseudomonas spp. Rates of isolation of anaerobic bacteria were relatively low with annual isolation frequencies ranging 8 to 15 per cent.
Insights
This study tracked bacterial isolates from postoperative infections in Japan between 1982 and 1993. Methicillin-resistant Staphylococcus aureus and Enterococcus species were significant findings in surgical site infections.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Epidemiology
Context:
- Postoperative infections represent a significant challenge in healthcare settings.
- Surveillance of bacterial pathogens is crucial for effective treatment and infection control.
- This study examines bacterial isolates from surgical site infections over a decade in Japan.
Purpose:
- To analyze the isolation frequencies of bacterial species from postoperative infections over an 11-year period (1982-1993).
- To identify trends in the prevalence of specific pathogens, including Gram-positive cocci and Gram-negative bacteria.
- To determine the most common sources and causative agents of postoperative infections in Japanese university hospitals.
Summary:
- A total of 1,453 bacterial strains were isolated from postoperative infections, with postoperative intra-abdominal sepsis being the most common source.
- Gram-positive cocci were frequently isolated, with a notable increase in methicillin-resistant Staphylococcus aureus (MRSA) until 1992.
- In the final year, Enterococcus spp. were the most prevalent, followed by Staphylococcus spp. and Pseudomonas spp. Anaerobic bacteria showed consistently low isolation rates (8-15%).
Impact:
- Provides valuable epidemiological data on bacterial infections following surgery in Japan.
- Highlights the rising prevalence of MRSA and the significance of Enterococcus species in surgical site infections.
- Informs antimicrobial stewardship and infection prevention strategies in clinical practice.