Evaluating piperacillin-tazobactam effectiveness in obese patients

Evaluation of the Achievement of a Pharmacodynamic Target of Piperacillin-Tazobactam for the Population with Obesity: an Open Randomized Controlled Feasibility Study

Phase 4 Interventional CR-CSSS Champlain-Charles-Le Moyne · NCT06690905

This study is testing if a different way of giving a common antibiotic can work better for hospitalized adults with obesity.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years and up
SexAll
SponsorCR-CSSS Champlain-Charles-Le Moyne Academic / other
Locations1 site (Greenfield Park, Quebec)
Trial IDNCT06690905 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of piperacillin-tazobactam in patients with obesity by comparing the pharmacodynamic parameters achieved through prolonged intermittent infusion versus standard infusion. It is an open randomized controlled trial focusing on hospitalized adults with a body mass index of 30 kg/m² or higher. The primary goal is to determine the proportion of patients achieving a favorable pharmacodynamic target after 24 hours of treatment. The study is conducted at Hôpital Charles-Le Moyne in Quebec.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with obesity who are hospitalized and have recently started piperacillin-tazobactam.

Not a fit: Patients with documented allergies to beta-lactams, those undergoing renal replacement therapy, or those with a history of seizures may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could optimize antibiotic treatment for obese patients, potentially improving infection outcomes.

How similar studies have performed: While this approach is novel in the context of obesity, similar studies have shown the importance of pharmacodynamics in optimizing antibiotic therapy.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults (18 years and older)
* Patients hospitalized at Hôpital Charles-Le Moyne
* Obesity (as defined by a body mass index of ≥ 30 kg/m\^2)
* Piperacillin-tazobactam prescription initiated within last 24 hours
* Planned duration of piperacillin-tazobactam of 24 hours or more

Exclusion Criteria:

* Documented allergy to beta-lactams of the penicillin class
* Patients with renal replacement therapy (hemodialysis, peritoneal dialysis, continuous venovenous hemodiafiltration)
* Pregnancy
* History of seizures or epilepsy, active seizures or epilepsy treated with antiepileptic drug therapy
* Patients on prolonged intermittent infusion or continuous infusion of piperacillin-tazobactam before randomization

Where this trial is running

Greenfield Park, Quebec

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions InfectionsObesity and Obesity-related Medical ConditionsObesityPiperacillin-tazobactamPharmacodynamics
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.