An Open-Label, Single-Dose, Pharmacokinetic Study of Vancomycin Dosed by Weight or Kidney Function in Adults With Obesity
University of Michigan
Summary
The goal of this clinical trial is to learn how to optimize vancomycin dosing in obese adults based on weight and kidney function. It will also assess the safety of different vancomycin dosing strategies. The main questions it aims to answer are: Does dosing vancomycin based on kidney function provide better drug exposure than dosing based on weight? What medical or safety issues arise when vancomycin is dosed according to weight versus kidney function? Participants will be randomized into two groups. One group will receive vancomycin doses based on their weight, while the other will receive doses based on their kidney function. Participants will: Receive a single dose of vancomycin based on either their weight or kidney function after pretreatment with antihistamines Provide blood and urine samples at specific times for pharmacokinetic analysis Undergo body composition measurements using DEXA scans and other methods Visit the clinic for physical exams, medical history, and laboratory tests
Description
This prospective, dosing group-randomized, single-dose pharmacokinetic study aims to evaluate vancomycin dosing in healthy obese participants across three BMI and two kidney function categories. Twenty-four participants will be enrolled, stratified by BMI (30-34.9 kg/m², 35-39.9 kg/m², ≥40 kg/m²) and creatinine clearance using dosing weight (CLcr\_dw 60-119 mL/min or ≥120 mL/min). Twenty-four participants will be randomized (1:1) into a standard of care vancomycin group (Control) or a kidney function based group (Test). The study will include physical exams, medical history, and laboratory eva…
Eligibility
- Age range
- 18–50 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: 1. 24 healthy obese participants within three obese class groups; BMI 30-34.9 kg/m2 (n=8), BMI 35-39.9 kg/m2 (n=8), and BMI ≥ 40 kg/m2 (n=8) 2. Male or female adults age 18 to 50 years 3. Weight ≥ 80 kg 4. Estimated creatinine clearance of 60 mL/min to 119 mL/min (n=12) or ≥ 120 mL/min (n=12) (based on the Cockcroft-Gault equation and dosing weight) Exclusion Criteria: 1. Pregnant or lactating females 2. Significant clinical illness within 3 weeks prior to screening 3. History of severe allergic diseases including drug allergies, with the exception of seasonal allergies…
Interventions
- DrugVancomycin (IV)
Vancomycin weight-based or kidney function-based dosing
Location
- Michigan Clinical Research UnitAnn Arbor, Michigan