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Tobramycin Administered at the Beginning of Dialysis (ESRD)

Primary Purpose

Renal Dialysis, Renal Failure, Chronic

Status

Completed

Phase

Phase 1

Locations

Canada

Study Type

Interventional

Intervention

Tobramycin

About this trial

This is an interventional basic science trial for Renal Dialysis focused on measuring Chronic Renal Diseases, Kidney Failure, Chronic, Renal Failure, Chronic, Tobramycin, Aminoglycosides, Pharmacokinetics, Infection, Anti-Bacterial Agents, Antibiotics, Renal Insufficiency, Chronic

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

Subjects aged 18 and over;
Subjects with end-stage renal disease who are on an intermittent hemodialysis program (three times a week, 3-4 hours) at the Hôpital Maisonneuve-Rosemont hemodialysis unit for at least one month;
Subjects with suspicion or diagnosis of Gram-negative rod-type bacteria infection for which an antibiotic is prescribed;
Subjects able to consent to the study (consent form read and signed by the subject).

Exclusion Criteria:

Contraindication or possible medical hazard related to the administration of tobramycin or to any ingredient in the formulation (e.g. sulphites), such as severe allergies or aminoglycoside-reported previous intolerances;
Variable residual renal function (e.g. acute or transient renal failure requiring occasional hemodialysis sessions, post-renal transplantation);
Conditions sensitive to the side effects of tobramycin (e.g. history of myasthenia gravis, Parkinson's disease, vestibular or auditory disorder);
Subjects with impaired volume of distribution (ie, severe burns [> 20%], significant ascites, decompensation for acute heart failure requiring hospitalization, admission to the critical care unit, cystic fibrosis, morbid obesity [dry weight greater than 50% of ideal weight]);
Pregnant or breastfeeding women;
Unstable hemodynamic status (risk of not tolerating / completing a 3-4 hour dialysis session);
Recent treatment with an aminoglycoside (<1 month);
Participation in another research protocol;
Inability to give free and informed consent.

Sites / Locations

Maisonneuve-Rosemont Hospital

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Tobramycin

Arm Description

Subjects with end-stage renal disease who have been involved in an intermittent hemodialysis program and who have suspected or diagnosed Gram-negative rod-type infection

Outcomes

Primary Outcome Measures

Ratio of maximum tobramycin concentration to minimal inhibitory concentration

In subjects receiving a single 5 mg/kg tobramycin dose during the first 30 minutes of a hemodialysis session, to determine the proportion of subjects in whom the maximum concentration is greater than or equal to 8 times that of the minimal inhibitory concentration

Secondary Outcome Measures

Tobramycin trough level

In subjects receiving a single 5 mg/kg tobramycin dose during the first 30 minutes of a hemodialysis session, to determine the proportion of subjects whose trough concentration of tobramycin is less than or equal to 2 mg / L.

Residual clearance

Clearance associated with hemodialysis

Volume of distribution

Total area under the curve

Area under the curve between 0 to 24h after administration

Tobramycin concentration

Tobramycin concentration 24h, 48h and 72h after administration

Full Information

NCT ID

NCT03904836

First Posted

February 8, 2019

Last Updated

February 24, 2021

Sponsor

Maisonneuve-Rosemont Hospital

1. Study Identification

Unique Protocol Identification Number

NCT03904836

Brief Title

Tobramycin Administered at the Beginning of Dialysis

Acronym

ESRD

Official Title

Pharmacokinetics of Tobramycin Administered at the Beginning of Intermittent Hemodialysis Session

Study Type

Interventional

2. Study Status

Record Verification Date

February 2021

Overall Recruitment Status

Completed

Study Start Date

January 31, 2019 (Actual)

Primary Completion Date

December 31, 2019 (Actual)

Study Completion Date

December 31, 2019 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title

Principal Investigator

Name of the Sponsor

Maisonneuve-Rosemont Hospital

4. Oversight

Studies a U.S. FDA-regulated Drug Product

Studies a U.S. FDA-regulated Device Product

Data Monitoring Committee

5. Study Description

Brief Summary

The purpose of the study is to evaluate whether the administration of a full tobramycin dose (5 mg/kg) during the first 30 minutes of a hemodialysis session provides favorable pharmacokinetic parameters in subjects with end-stage renal disease who are suspected or has been diagnosed with Gram-negative rod-type infection. It is anticipated that the administration of a single 5 mg/kg dose of tobramycin during the first 30 minutes of a hemodialysis session will achieve an optimal ratio of maximum tobramycin concentration to minimal inhibitory concentration (Cmax/CMI) of 8 to 10 while limiting the accumulation (trough < 2 mg/L before the next hemodialysis session) in end-stage renal disease subjects requiring intermittent hemodialysis sessions.

Detailed Description

STUDY DESIGN: Prospective, monocentric, non-randomized, uncontrolled pharmacokinetic study End-stage renal disease subjects who have been involved in an intermittent hemodialysis program and who have suspected or diagnosed Gram-negative rod-type infection. Pharmacokinetic parameters: Tobramycin concentration analyses done at the beginning of hemodialysis session (before tobramycin administration), 30 minutes after completion of the infusion (will allow us to calculate the peak), during hemodialysis session (additional), at the end of hemodialysis session, between hemodialysis sessions (optional) and just before the next hemodialysis session (will allow us to analyse the trough). RECRUITMENT PROCESS: A systematic daily screening for hemodialysis hospitalized subjects or subjects followed at the outpatient clinic who have a suspicion or diagnosis of Gram-negative rod type infection will be made by the research coordinators. Software routinely used in the clinic at Maisonneuve-Rosemont Hospital (Gesphar, NumeRx, Oacis and Medurge) will be used to ensure the identification of potential subjects. The pharmacists responsible for validation of prescriptions at the pharmacy department will collaborate with the research team to help identifying eligible candidates. An eligibility assessment tool will be used and subjects who meet the inclusion criteria and do not meet any exclusion criteria will be considered as eligible candidates. Thereafter, additional baseline information will be collected from the medical file (e.g. ethnicity) or by questioning the subject. A member of the research team will addressed the eligible subject, will explain the study and present the Information Form and Informed Consent (FIC), that will document informed consent of the subject. DATA COLLECTION: A minimum of four blood samples and a maximum of six blood samples will be collected. The sampling scheme is as follows: at the beginning of hemodialysis session (before tobramycin administration), 30 minutes after completion of the infusion, during hemodialysis session (additional), at the end of hemodialysis session, between hemodialysis sessions (optional) and just before the next hemodialysis session. A member of the research team will provide the tubes to the nursing, will write sampling times and will ship the blood samples to the laboratory. STUDY SAMPLE: Since the objective is to obtain robust pharmacokinetic parameters, the calculation of the sample size aims at a sufficient number of participants to obtain a convergence of facilitated pharmacokinetic parameters, thus obtaining values of coefficients of variation of less than 40%, while maintaining a statistical power of 80%. The calculation uses the variability of the parameters obtained by Veinstein et al. In this study, the residual clearance (Clnhd) is the parameter with the greatest variability (average of 10.4 mL / min with a standard deviation of 6.4 mL / min). Thus, the variability used in calculating the sample size is that of the parameter with the greatest variability, the residual clearance. The sample studied by Veinstein et al. not having the same characteristics as the subjects of the study, the variability could be greater than the reference sample and a safety margin of 30% is added. A total of 12 subjects to be recruited is therefore planned. No correction is applied for losses at the follow-up or withdrawal of consent considering the short duration of the study.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study

Renal Dialysis, Renal Failure, Chronic

Keywords

Chronic Renal Diseases, Kidney Failure, Chronic, Renal Failure, Chronic, Tobramycin, Aminoglycosides, Pharmacokinetics, Infection, Anti-Bacterial Agents, Antibiotics, Renal Insufficiency, Chronic

7. Study Design

Primary Purpose

Basic Science

Study Phase

Phase 1

Interventional Study Model

Single Group Assignment

Masking

None (Open Label)

Allocation

N/A

Enrollment

11 (Actual)

8. Arms, Groups, and Interventions

Arm Title

Tobramycin

Arm Type

Experimental

Arm Description

Subjects with end-stage renal disease who have been involved in an intermittent hemodialysis program and who have suspected or diagnosed Gram-negative rod-type infection

Intervention Type

Drug

Intervention Name(s)

Tobramycin

Intervention Description

5 milligrams per kilogram intravenous for one dose

Primary Outcome Measure Information:

Title

Ratio of maximum tobramycin concentration to minimal inhibitory concentration

Description

Time Frame