Prevalence of nosocomial infections and antibiotic resistance patterns in Iranian hospitals over five years

Hospital-acquired infections (HAIs) represent a persistent threat to patient safety worldwide. A recent study focusing on Iran reveals a concerning trend: while the overall prevalence of these infections in Isfahan Province remained stable between 2019 and 2022 at approximately 5%, antibiotic resistance among key pathogens is significantly increasing, posing challenges to effective treatment.

Rising Resistance in Iranian Hospitals

Researchers analysed data from 38 hospitals in Isfahan Province, examining infection types, the microbes causing them, and patterns of antibiotic resistance. The study, conducted between 2019 and 2023, utilized data from the Health Deputy of Isfahan University of Medical Sciences and adhered to established clinical laboratory standards.

Common Infections and Resistant Pathogens

The most frequently observed HAIs were urinary tract infections (UTIs), pneumonia, and surgical site infections. These were commonly caused by Acinetobacter baumannii, Klebsiella pneumoniae, and Escherichia coli. Alarmingly, these pathogens demonstrated substantial resistance to critical antibiotics like carbapenems and third-generation cephalosporins.

Did You Know? Elderly patients (65+) were most affected by HAIs, with men showing a greater susceptibility to ventilator-associated pneumonia and women to UTIs.

Infection rates weren’t uniform across all healthcare settings. Intensive care units and transplant units experienced the highest rates of HAIs, while departments like psychiatry, ENT, and ophthalmology reported fewer cases. This suggests that the risk of infection is linked to the severity of illness and the intensity of medical interventions.

Antibiotic Resistance Trends

The data reveals a particularly worrying increase in resistance among Gram-negative pathogens in 2023, exceeding 70% for several major antibiotic classes. Acinetobacter species exhibited the highest levels of resistance, including 94.9% to ceftazidime, and 93.3% to carbapenems. While Escherichia coli and Pseudomonas aeruginosa showed comparatively lower resistance rates, Klebsiella species also demonstrated high resistance to multiple antibiotics.

Expert Insight: The increasing rates of antibiotic resistance observed in this study highlight the critical need for proactive measures to preserve the effectiveness of existing antibiotics. Without effective treatment options, even common infections could become life-threatening.

Notably, susceptibility to colistin remained largely preserved, with only 3.8% resistance observed among Acinetobacter species.

What Could Happen Next

If current trends continue, Iranian hospitals could face increasing difficulties in treating HAIs, potentially leading to longer hospital stays, higher mortality rates, and increased healthcare costs. A possible next step is the implementation of more stringent infection control protocols. Analysts expect that enhanced antibiotic stewardship programs, aimed at optimizing antibiotic use, may also be crucial. Further research could focus on identifying regional variations in resistance patterns to tailor interventions effectively.

Frequently Asked Questions

What are the most common types of hospital-acquired infections in Isfahan Province, Iran?

The most common HAIs were urinary tract infections (UTIs), pneumonia, and surgical site infections.

Which pathogen showed the highest levels of antibiotic resistance in the study?

Acinetobacter spp. Displayed the highest resistance levels, including resistance to ceftazidime, fluoroquinolones, aminoglycosides, and carbapenems.

What patient demographic was most affected by HAIs?

Elderly patients (65+) were most affected, with men prone to ventilator-associated pneumonia and women to UTIs.

Given the challenges presented by rising antibiotic resistance, what role do you believe public health initiatives should play in addressing this global threat?