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EVALUATION OF HOSPITAL ACQUIRED PSEUDOMONAS INFECTION IN PARAPLEGIC AND ORTHOPAEDIC CASES.

K K Lahiri1,2

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Pseudomonas aeruginosa causes infections in spinal cord injury patients, with 54% showing antibiotic resistance. Ceftazidime and ciprofloxacin were effective, while gentamicin showed high resistance.

Keywords:
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Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Clinical Epidemiology

Background:

  • Pseudomonas aeruginosa is a significant opportunistic pathogen.
  • Spinal cord injury (SCI) and orthopedic patients are susceptible to nosocomial infections.
  • Understanding antibiotic resistance patterns and microbial typing is crucial for patient management.

Purpose of the Study:

  • To evaluate antibiotic sensitivity and pyocin typing of Pseudomonas aeruginosa isolates from SCI and orthopedic patients.
  • To identify common sources of infection and assess colonization rates.
  • To establish a potential clinico-epidemiological relationship using pyocin typing.

Main Methods:

  • Isolates of Pseudomonas aeruginosa (n=100) were obtained from clinical specimens.
  • Antibiotic sensitivity testing was performed.
  • Pyocin typing was conducted on a subset of isolates (n=22).

Main Results:

  • 54% of Pseudomonas aeruginosa isolates exhibited antibiotic resistance.
  • Urinary tract, pressure sores, and wound swabs were the most frequent sources.
  • Spinal cord injury patients demonstrated a high rate of nosocomial colonization.
  • Ceftazidime, amikacin, norfloxacin, and ciprofloxacin showed the highest activity.
  • Gentamicin, carbenicillin, and tobramycin displayed significant resistance.
  • Pyocin typing provided insights into clinico-epidemiological links.

Conclusions:

  • Pseudomonas aeruginosa infections in SCI and orthopedic centers are characterized by substantial antibiotic resistance.
  • Effective antimicrobial agents include ceftazidime, amikacin, norfloxacin, and ciprofloxacin.
  • Pyocin typing is a valuable tool for understanding infection transmission and epidemiology in these patient populations.