Appropriate Use of Blood Cultures in the Emergency Department Through Machine Learning
- Conditions
- MicrobiologyArtificial IntelligenceMachine LearningEmergency Service, HospitalRandomized Controlled Trial
- Interventions
- Device: Blood culture prediction tool
- Registration Number
- NCT06163781
- Lead Sponsor
- Amsterdam UMC, location VUmc
- Brief Summary
The goal of this clinical trial is to study whether the use of our blood culture prediction tool is non-inferior to current practice and if it can improve certain outcomes in all adult patients presenting to the emergency department with a clinical indication for a blood culture analysis (according to the treating physician). The primary endpoint is 30-day mortality. Key secondary outcomes are:
* hospital admission rates
* in-hospital mortality
* hospital length-of-stay. In the intervention group, the physician will follow the advice of our blood culture prediction tool.
In the comparison group all patients will undergo a blood culture analysis.
- Detailed Description
Rationale: The overuse of blood cultures in emergency departments leads to low yields and high numbers of contaminated cultures, which is associated with increased diagnostics, antibiotic usage, prolonged hospitalisation, and mortality. Ideally, blood cultures would only be performed in patients with a high risk for a positive culture. The investigators have developed a machine learning model to predict the outcome of blood cultures in the ED. Retrospective and prospective validation of the tool in various settings show that it can be used to reduce the number of blood culture analyses by at least 30% and help avoid the hidden costs of contaminated cultures.
Objective: This study aims to investigate whether the use of our blood culture prediction tool is non-inferior to current practice and if it can improve certain outcomes.
Study design: A randomized controlled non-inferiority trial. Study population: All adult patients presenting to the emergency department with a clinical indication for a blood culture analysis (according to the treating physician).
Intervention: In the control group, all patients will undergo a blood culture analysis. In the intervention group, the physician will follow the advice of our blood culture prediction tool. If the chance of a positive blood culture is \< 5%, the blood culture analysis will be cancelled and the sample destroyed. If the change of a positive blood culture is \> 5%, the blood culture analysis will be performed as usual.
Main study parameters/endpoints: The primary endpoint is 30-day mortality, for which the investigators aim to show non-inferiority. Key secondary outcomes, for which the investigators also aim to show non-inferiority, are hospital admission rates, in-hospital mortality, and hospital length-of-stay.
Recruitment & Eligibility
- Status
- RECRUITING
- Sex
- All
- Target Recruitment
- 7584
- Age >= 18 years
- Have a clinical indication for a blood culture analysis (according to the treating physician)
- Have sufficient data recorded (laboratory results and vital sign measurements) for a prediction to be made (at least 20% of the needed parameters)
- Central Venous Line (CVL) or Peripherally Inserted Central Catheter (PICC) in situ
- Neutrophil count < 0.5 * 109/L
- Candidemia or S. aureus bacteraemia in the past 3 months.
- Most likely diagnosis of endocarditis/spondylodiscitis/infected prosthetic material
- Pregnant or breastfeeding patients
- Not capable of giving informed consent
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Blood culture taken based on machine learning tool Blood culture prediction tool -
- Primary Outcome Measures
Name Time Method 30-day mortality 30 days
- Secondary Outcome Measures
Name Time Method in-hospital mortality 90 days hospital admission rates 1 day hospital length-of-stay 90 days
Trial Locations
- Locations (1)
Amsterdam UMC - location AMC
🇳🇱Amsterdam, Netherlands