Pediatric Surgical Patient | Population Pharmacokinetics and Pharmacogenomics of Oral Oxycodone in Pediatric Surgical Patients

Pediatric Surgical Patient research study

What is the primary objective of this study?

Oxycodone is an oral opioid analgesic that is most commonly prescribed for the management of pain in post-operative patients at Boston Children's Hospital. Oxycodone has been widely used in adults and children to relieve post-operative pain. However, its pharmacokinetics (what it does in the body) and pharmacodynamics (how it works) have not been well established in children. Some children, because of their specific genetic make-up, may metabolize the drug more quickly and therefore may be at risk for more side effects in the commonly prescribed dose. We would like to find out more about how this drug is absorbed, metabolized and excreted in children. In order to study these aspects, we would like to give oxycodone to surgical patients at Boston Children's Hospital then measure its metabolic activity and also perform a genetic analysis. The genetic testing is specifically to analyze the following genotypes only: cytochrome P450 2D6 (CYP2D6) and cytochrome P450 3A4 (CYP3A4), which represent the differences in cytochrome P450 metabolism of oxycodone.

Who is eligible to participate?

Inclusion Criteria: - A total of 68 generally healthy, opioid-naive children, aged 0-6 years, scheduled as in-patient surgery for ventriculoperitoneal shunt placement/revision or Craniotomy (Neurosurgery service), Cleft lip/palate repair (plastic surgery service) and hypospadias repair or ureteral urethral reimplantation (genitourinary surgery service) will be enrolled in the study. Exclusion Criteria: - Children will be excluded if they are currently taking any medications which are CYP3A4 or CYP2D6 inhibitors/inducers or have a history of allergy or hypersensitivity to oxycodone, have any condition that might interfere with GI absorption, distribution, hepatic metabolism or renal excretion of r oxycodone, or a diagnosis of sleep apnea or impaired respiratory reserve.

Which medical condition, disease, disorder, syndrome, illness, or injury is researched?

Pediatric Surgical Patient

Study Interventions

Interventions can include giving participants drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available or noninvasive approaches such as surveys, education, and interviews.

Drug:oral oxycodone

Study Arms

Research studies and clinical trials typically have two or more research arms. An arm is a group of people who receive the same treatment in the study.

oral oxycodoneAn orogastric tube will be placed in the stomach (placement verified by routine accepted clinical guidelines) under anesthesia as is part of standard routine clinical care to remove gastric contents. The same orogastric tube will be used for intragastric liquid oxycodone administration in a dose of 0.1 mg/kg before the surgical incision. This weight-adjusted dose of 0.1 mg/kg is administered as per standard clinical dosing guidelines at Boston Children's Hospital.

Study Status


Start Date: May 2014

Completed Date: December 2018

Phase: Phase 4

Type: Interventional


Primary Outcome: Oxycodone, oxymorphone, noroxymorphone and noroxycodone serum levels

Secondary Outcome:

Study sponsors, principal investigator, and references

Principal Investigator: Patcharee Sriswasdi, MD

Lead Sponsor: Boston Children’s Hospital


More information:

Discuss Oxycontin