Characteristics of and antibiotic resistance in urinary tract pathogens isolated from patients with upper urinary tract stones

Pak J Pharm Sci. 2023 Jan;36(1):23-29.

Abstract

To investigate the distribution characteristics and antibiotic resistance patterns of uropathogens in patients with upper urinary calculi and urinary tract infections, data on sex, age, positive midstream urine culture results and drug sensitivity results were collected. The statistical program SPSS 26.0 was used for statistical analysis. Among the 1414 positive urine samples, the most common pathogens were Escherichia coli (36.4%), Enterococcus faecalis (13.8%), Staphylococcus epidermidis (7.5%), Klebsiella pneumoniae (5.0%), Streptococcus agalactiae (3.4%) and Enterococcus faecium (3.3%). The incidences of E. coli (48.6%), K. pneumoniae (6.3%) and Proteus mirabilis (4.2%) were higher in female patients than in male patients (23.2%, 3.5%, 0.6%, respectively; P<0.05). E. faecalis was detected more frequently in the young group (16.0%) than in the elderly group (11.2%; P<0.01). Most of the isolates were resistant to levofloxacin and ciprofloxacin, while few were resistant to imipenem, meropenem, cefoperazone/sulbactam, piperacillin/tazobactam and amikacin. The bacterial spectra in patients with urinary stones varied by sex and age, which should be taken into consideration during treatment. The proportion of E. faecium showed an upward trend, while those of S. epidermidis and S. agalactiae demonstrated downward trends in the study period. Regardless, carbapenems, cefoperazone/sulbactam, piperacillin/tazobactam and amikacin are good choices for serious cases.

MeSH terms

  • Aged
  • Amikacin / therapeutic use
  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use
  • Cefoperazone / therapeutic use
  • Drug Resistance, Bacterial
  • Drug Resistance, Microbial
  • Escherichia coli
  • Female
  • Humans
  • Male
  • Microbial Sensitivity Tests
  • Piperacillin / therapeutic use
  • Sulbactam / therapeutic use
  • Tazobactam / therapeutic use
  • Urinary Calculi* / drug therapy
  • Urinary Tract Infections* / drug therapy
  • Urinary Tract Infections* / epidemiology
  • Urinary Tract Infections* / microbiology
  • Urinary Tract*

Substances

  • Anti-Bacterial Agents
  • Cefoperazone
  • Sulbactam
  • Amikacin
  • Tazobactam
  • Piperacillin