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Background: There is an urgent need to develop new strategies to prevent Clostridium difficile infections (CDI). A recent study suggests that a novel infection control bundle (IC bundle) can lead to a significant decrease in the incidence of CDI in acute-care hospitals. This IC bundle consists in screening patients for C. difficile carriage upon their admission combined with implementation of isolation precautions for carriers. Further investigations are required to confirm these findings.
Objective: To evaluate the feasibility of implementing a multicenter interventional study to further to investigate the efficacy of this IC bundle.
Methods: Prospective, cluster randomized feasibility trial of 2 infection control strategies (a "standard" and an "experimental" strategy) to reduce transmission of C. difficile among patients in 20 medical wards in 5 acute-care facilities in Quebec. Wards will be randomized (1:1) to one of the 2 interventions. Each intervention will be applied to all patients present on selected wards. The study will be divided into (1) a 3-month baseline period; (2) a 2-week randomization and implementation period; and (3) an 8-week intervention period.
Intervention: The "experimental strategy" includes the components of the above-mentioned IC bundle. The "standard strategy" will not implement the IC bundle.
Outcomes: As a feasibility study, process evaluation will form the primary and secondary outcomes. These outcomes will allow to determine whether a future main trial is possible and desirable.
Hypothesis: We hypothesize that the intervention will be implementable across the study wards.
Significance: This study is essential to plan a subsequent definitive trial to determine whether the IC bundle can prevent CDI.
Full description
C. difficile is a gram-negative anaerobic bacteria that causes C. difficile infection (CDI), a disease involving the colon and causing symptoms ranging from mild diarrhea to fulminant colitis. C. difficile can spread from patients to patients in acute-care hospitals. Transmission is believed to occur mainly from patients with active disease, but patients who carry the bacteria without any symptom (called C. difficile carriers) can also transmit the bacteria to other patients.
Preliminary evidence that suggest that detecting C. difficile carriers to place them under isolation precautions can lead to a decrease in the incidence of CDI. In order to investigate this question, large-scale clinical trials will be ultimately required. In order to plan such large-scale study, there is a need to perform a preliminary feasibility trial. The current study will assess the feasibility, acceptability and logistical considerations of implementing a multicenter intervention consisting of the detection and isolation of C. difficile carriers on hospital admission, in order to guide the design of a definitive trial. This objective is essential considering the paucity of published data on this topic.
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Inclusion and exclusion criteria
Because both strategies will be applied at the ward level, the inclusion and exclusion criteria apply to wards, not to individual patients. All patients and healthcare workers on each ward will be assigned to the intervention.
Inclusion criteria:
Clusters (i.e. wards) are eligible to take part in the study if they meet the following criteria:
Exclusion criteria:
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4,138 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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