ANTIBIOTIC-RESISTANT ENTEROBACTERALES BLOODSTREAM INFECTIONS AND RISK FACTORS IN PATIENTS ADMITTED TO THE INTENSIVE CARE UNIT

NCT ID: NCT07172932

Last Updated: 2025-09-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

314 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-09-01

Study Completion Date

2023-01-30

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

In this study, we first aimed to reveal the resistance profile of Enterobacteriales bloodstream infections at our center.

We evaluated data from patients with ESBL, colistin, and carbapenem resistance and identified resistance risk factors.

We then reviewed our approach to managing the infection based on the results obtained.Patients were grouped according to resistance patterns and resistance status and compared retrospectively.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Antibiotic resistance represents one of the most urgent and serious challenges confronting modern healthcare systems. This problem is particularly critical in intensive care units (ICUs), where bloodstream infections (BSIs) caused by resistant organisms are frequently associated with prolonged hospitalization, increased healthcare costs, therapeutic failures, and high mortality rates.

Over the past decade, the incidence of bloodstream infections due to Enterobacterales species has risen substantially worldwide. These pathogens possess diverse resistance mechanisms that undermine the effectiveness of commonly used antibiotics. Among the most clinically significant are extended-spectrum beta-lactamases (ESBLs), carbapenemase production, and the emergence of colistin resistance phenotypes. These mechanisms not only limit empiric treatment options but also complicate infection control practices and contribute to the spread of multidrug-resistant organisms across healthcare facilities.

In Turkey, national and multicenter surveillance data indicate that resistance rates among ICU isolates of Klebsiella pneumoniae and Escherichia coli often exceed the European average. This situation directly impacts empiric antibiotic therapy by reducing the likelihood of initial treatment success, while also facilitating the nosocomial transmission of resistant strains. Consequently, optimizing empiric therapy strategies and strengthening infection control measures are of paramount importance in ICUs.

The present study was designed to retrospectively evaluate all cases of Enterobacterales bloodstream infections (EBSIs) diagnosed in our center between 2019 and 2022. The primary objectives were:

To identify the prevalence and distribution of key antibiotic resistance phenotypes (including ESBL, carbapenem, and colistin resistance).

To analyze patient- and treatment-related risk factors associated with the emergence of resistance.

To assess the potential clinical consequences of resistance in terms of morbidity, mortality, and therapeutic outcomes.

To provide evidence-based data that may inform and support the development of local infection control policies and antimicrobial stewardship interventions.

By systematically examining the resistance patterns and associated risk factors in a large cohort of ICU patients, this study aims to contribute to a better understanding of the epidemiology of resistant Enterobacterales infections. Furthermore, the findings are expected to provide valuable insights for revising empiric treatment guidelines and for guiding infection control strategies tailored to high-risk patient populations.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Bloodstream Infections Enterobacteriaceae Infections Intensive Care (ICU) Antibiotic Resistant Infection

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Age ≥ 18 years
* Isolation of an Enterobacterales species from a blood culture obtained during ICU stay
* The isolate considered as the causative pathogen by an Infectious Diseases and Clinical Microbiology specialist

Exclusion Criteria

* Isolates not considered as causative pathogens
* Growth of a different pathogen in blood culture within ±72 hours of the index culture
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

Ankara City Hospital Bilkent

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Fahriye Melis Gürsoy Kurtoğlu

specialist doctor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

Ankara Bilkent City Hospital

Çankaya, Ankara, Turkey (Türkiye)

Site Status

Countries

Review the countries where the study has at least one active or historical site.

Turkey (Türkiye)

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

E1-21-2215

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.