Bupivacaine Pharmacokinetics Following TAP Block

April 14, 2016 updated by: Jason Hayes, The Hospital for Sick Children

Bupivacaine Pharmacokinetics in Children Following Transversus Abdominis Plane Block

The aims of this study are to determine population PK parameters of bupivacaine in children following TAP block using a population-based PK approach, and to evaluate the influence of patient covariates on drug disposition.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The number of published pediatric studies on the use of transversus abdominis plane (TAP) block has increased in recent years. The transversus abdominis plane (TAP) block has been used for postoperative analgesia for surgery to the abdominal wall and involves the injection of local anesthetic solution into a plane between internal oblique (IO) and transversus abdominis (TA) muscles. The TAP block has the advantage of providing unilateral analgesia in instances of non-midline abdominal incision and is particularly useful in cases where epidural blockade is either contraindicated or technically or logistically not feasible. Bupivacaine and ropivacaine have been used as local anesthetics for TAP blocks in published studies to date. However, no data exist regarding the pharmacokinetics of bupivacaine after TAP block in children. The aims of this study are to determine population pharmacokinetic (PK) parameters of bupivacaine in children following a TAP block, using a population-based PK approach.

Study Type

Observational

Enrollment (Actual)

20

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5G 1X8
        • The Hospital for Sick Children

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

1 year to 16 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Children undergoing TAP block for postoperative pain control

Description

Inclusion Criteria:

  • Patients receiving a TAP block as part of routine anesthetic management
  • Patients older than 3 months and less than 18 years of age
  • Patients weighing ≥ 6 kg
  • Patients with American Society of Anesthesiologists (ASA) score 1-3

Exclusion Criteria:

  • Patients with known severe preexisting liver disease
  • Patients with known severe (i.e. requiring dialysis) preexisting renal disease
  • Patients who will be discharged the day of surgery
  • Refusal to consent

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Blood sample for bupivicaine pharmacokinetics
Children undergoing TAP block will have blood sampled for bupivacaine pharmacokinetics
Other: Blood sample for bupivicaine pharmacokinetics

Bupivacaine levels will be measured with an assay developed on the 4000 QTrap Tandem Mass Spectrometer (Applied Biosystems/ MDS Sciex).

Data will be collected and analyzed using the Agilent ChemStation software (Rev A.10.02). The analytical column is an Agilent Zorbax Eclipse XDB-C8 (4.6 x 150mm, 5µm).Quantification of bupivacaine is based on analyzing a six point calibration curve (0 to 4.0 mg/L). An internal standard (Prilocaine 221.2/86.1) is included with each calibrator, quality control or patient sample. Instrumentation and Chromatographic conditions: The HPLC system consists of a Specta-System P1000 Isocratic Pump and an AS3000 Autosampler (Thermo Electron Corporation, Waltham MA).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Population pharmacokinetics of bupivacaine and the influence of patient covariates on drug disposition
Time Frame: 0 - 360 minutes after the TAP block is performed
Blood will be drawn from an indwelling intravenous catheter. Each patient will have a total of 6 samples collected during each of the following time blocks: 0 - 10 minutes, 11 - 20 minutes, 21 - 30 minutes, 31 - 60 minutes, 61 - 180 minutes and 181 - 360 minutes after the TAP block is performed. Age, weight, sex, concomitant drugs (intravenous and inhalation anesthetics, muscle relaxants, and opioids), and kidney function data will be investigated as co-variables for each of the primary parameters. We will obtain estimates of total clearance (CL), volume of distribution, elimination half life (t1/2), estimates of clearance, and absorption rate constant.
0 - 360 minutes after the TAP block is performed

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

The Hospital for Sick Children

Investigators

  • Principal Investigator: Jason Hayes, The Hospital for Sick Children

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2011

Primary Completion (Actual)

December 1, 2014

Study Completion (Actual)

December 1, 2014

Study Registration Dates

First Submitted

August 21, 2013

First Submitted That Met QC Criteria

December 12, 2013

First Posted (Estimate)

December 19, 2013

Study Record Updates

Last Update Posted (Estimate)

April 15, 2016

Last Update Submitted That Met QC Criteria

April 14, 2016

Last Verified

April 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1000023222

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Transversus Abdominis Plane Block

Clinical Trials on Blood sample for bupivicaine pharmacokinetics

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Canada

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe