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[Aerobic and facultatively anaerobic bacteria isolated from surgical infection patients]
Abstract:
The ecological structure of infections in surgical patients with different postoperative complications (suppurative wounds, abscesses, peritonitis, etc.) and suppurative lung diseases were studied. During the period of 6 years (1975-1980) 5401 samples of clinical material were studied. 1380 samples (25.6%) were sterile, from 2254 samples (41.7%) monocultures were isolated, in 1767 samples (32.7%) microbial associations were detected. Of 5962 isolated cultures, 1816 (30.5%) were Gram-negative bacteria (GNB), 3532 (59.2%) were Gram-positive bacteria (GPB) and 614 (10.6%) were yeastlike fungi. The tendency towards the increase of the role of GNB in the etiology of postoperative complications was observed. Among GNB Pseudomonas aeruginosa strains were prevalent (36.2%). In the group of GPB coagulase-negative staphylococci were rather frequently found to be the causative agents of surgical infections.
Insights
This study analyzed surgical infections over six years, finding an increasing role of Gram-negative bacteria (GNB) in postoperative complications. Pseudomonas aeruginosa was the most common GNB, while coagulase-negative staphylococci predominated among Gram-positive bacteria.
Area of Science:
- Medical Microbiology
- Surgical Infections
- Clinical Bacteriology
Background:
- Postoperative complications pose significant risks in surgical patients.
- Understanding the microbial etiology of these infections is crucial for effective treatment.
Purpose of the Study:
- To investigate the ecological structure of infections in surgical patients.
- To identify the prevalence and trends of different microorganisms causing postoperative complications and suppurative lung diseases.
Main Methods:
- Analysis of 5401 clinical samples collected over a 6-year period (1975-1980).
- Isolation and identification of microbial cultures, including monocultures and associations.
- Classification of isolates into Gram-negative bacteria (GNB), Gram-positive bacteria (GPB), and yeastlike fungi.
Main Results:
- 25.6% of samples were sterile, 41.7% yielded monocultures, and 32.7% showed microbial associations.
- Gram-negative bacteria (30.5%) and Gram-positive bacteria (59.2%) were the predominant isolates.
- A rising trend in the contribution of GNB to postoperative infections was observed.
- Pseudomonas aeruginosa was the most prevalent GNB (36.2%), and coagulase-negative staphylococci were common among GPB.
Conclusions:
- The microbial landscape of surgical infections is dynamic, with a notable increase in Gram-negative bacteria.
- Pseudomonas aeruginosa and coagulase-negative staphylococci are significant pathogens in surgical site infections and suppurative lung diseases.