Antibiotic resistance is a frequent problem among outpatient urinary E. coli isolates. To evaluate the frequency of this problem in Santiago we analized the antibiotic resistance profiles of 173 independent E. coli urinary samples identified in an outpatient clinic. A high percentage of resitance to Ampicillin (45,6°/o), trimetroprim-Sulfamethoxazol (STX) (33,.5º/o), and Cephalotine (20,8°/o) was detected. Antibiotic resistance was infrequent against Nalidixic and Pipemidic acid (<10% each) and rare against Ciprofloxacin, Cefuroxime, Gentamicin or Nitrofurantoin (<3% cach). All isolates were susceptible to Cefotaxime and Amikacin. Profile analysis indicated that 41% of the isolates were fully susceptible to all the antibiotics, 18,9% were resistant to any given antibiotic and 39,9% were multiresistants.
Prevalent resistant combinations were Ampicillin-STX (15,1%) and Ampicillin -Cephalotine (7,8°/o) . All Ciprofloxacin resistant isolates were multiresistants.
Fica C., A. ., Pino, A. ., Ramírez, P. ., Brunel C., V. ., & Triantafilo, V. . (1998). Susceptibilidad ante diferentes antimicrobianos en aislamientos de e. coli de infecciones urinarias ambulatorias en Santiago. Revista Hospital Clínico Universidad De Chile, 9(4), pp. 232–7. https://doi.org/10.5354/2735-7996.1998.80912
