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This pilot study is a prospective, randomized, controlled, open-label trial to assess the feasibility of a randomized controlled trial of sufficient quality that would assess the efficacy and safety of vancomycin adjustments according to Area under the curve/Minimal inhibitory concentration (AUC0-24h/MIC) calculated by the Bayesian approach rather than by a trough dosage. Randomization will be stratified according to infection severity. Approximately 60 subjects meeting all inclusion and no exclusion criteria will be randomized to have pharmacists perform vancomycin dose adjustments with AUC0-24h / MIC calculated by the Bayesian approach versus the trough dosage approach.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Bayesian method | Experimental | Pharmacists will perform vancomycin dose adjustments according to AUC0-24h/MIC using the Bayesian method with a web application |
|
| Standard method | Active Comparator | Pharmacists will perform vancomycin dose adjustments according to trough levels of vancomycin. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Vancomycin dose adjustment using the Bayesian method | Other | This intervention is the experimental method. The AUC/MIC target is 400-600 mg*hour/L. |
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| Measure | Description | Time Frame |
|---|---|---|
| Validation of The Research Protocol | Evaluation of adhesion rate to the sampling protocol of 80% or more and adhesion rate to software recommendations of 90% or more | Through study completion, an average of 2 weeks |
| Evaluation of Recruitment | Evaluation of consent rate of 30% or more and the number of patients recruited per month of 10 or more | Baseline |
| Measure | Description | Time Frame |
|---|---|---|
| The proportion of patients who reach a therapeutic level in the first 48 hours | Percentage of patients who reach a therapeutic level in the first 48 hours | At 48 hours after the first dose of vancomycin |
| Time to reach the vancomycin target |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Benoît Crevier, PharmD, MSc | Charles-Le Moyne Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Charles-Le Moyne Hospital | Greenfield Park | Quebec | J4V 2H1 | Canada |
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| Vancomycin dose adjustment using the trough level method | Other | This intervention is the standard method. Previous clinical guidelines recommended this method. The trough target is 10-15 mg/L for non-severe infections and 15-20 mg/L for severe infections. |
|
Number of hours necessary to reach the vancomycin target. Number of hours will be classified in the following categories: 24-48 hours, 49-96 hours, 97 hours and above.
| During the vancomycin treatment |
| The number of adjustments required to reach the vancomycin target | Number of dose adjustments required to reach the vancomycin target | During the vancomycin treatment |
| The number of vancomycin dosage level monitoring to reach the vancomycin target | The number of vancomycin dosage level monitoring to reach the vancomycin target | During the vancomycin treatment |
| The proportion of vancomycin dosage level monitoring in the vancomycin target | Percentage of vancomycin dosage level monitoring in the vancomycin target | During the vancomycin treatment |
| The difference between the AUC calculated by the Bayesian method and the trapezoid method | Difference in percentage of the vancomycin AUC calculated by the Bayesian method and the trapezoid method | During the vancomycin treatment |
| The difference between the initial prescribed dose and the dose suggested by the Bayesian software. | Difference in percentage of the initial prescribed dose and the dose suggested by the Bayesian software. | Baseline |
| Proportion of acute kidney injury | Percentage of acute kidney injury. | During the vancomycin treatment |
| Average daily dose of vancomycin | Average of the daily dose of vancomycin calculated in mg per kg of total body weight | Through study completion, an average of 2 weeks |
| Operational Impact | Evaluation of the impact on pharmacist's time required for monitoring vancomycin | Immediately after the intervention |