Antibiotic Resistance in Acinetobacter baumannii Isolated from Patients with Urinary Tract Infections in Zabol, Iran

Background: Acinetobacter baumannii are opportunistic pathogens that are found in abundance in Zabol. Due to their unique capability for long-term survival in the hospital environment, the chances of becoming infected with the bacteria are very high. Therefore, identifying potential sources of infection in the donor is very important. Theaimof this studywasto determine antibiotic resistance in Acinetobacter isolates. Methods: A cross sectional study was performed to evaluate 30 strains of Acinetobacter baumannii, isolated from urine culture of hospitalized patients (Amir- Al- Momenin Hospital, Zabol, South Eastern Iran) with urinary tract infections during a period of 6 months and antibiotic resistance was determined by the disk diffusion method and minimum inhibitory concentration for the antibiotic gentamicin was found with the microdilution method. Results: The results showed that in this study, all antibiotics used on Acinetobacter were effective antimicrobial agents, and only four positions (13.33%) and 26 sensitive points (86.66%) to these antibiotics have been accessed. After chloramphenicol, gentamicin was found as the most active antibiotic in a way that 7 sensitive samples (23.33%) and 23 officials (76.66%) were observed. Results of minimuminhibitory concentration (MIC) showed that four strains of Acinetobacter could grow at all concentrations of gentamicin, while the highest MIC was equal to 1024 micrograms per milliliter. Conclusions: This study demonstrates the increasing resistance of many strains of Acinetobacter baumannii, thus new antibiotics and new treatments are needed.