Switching a baby from IV levomethadone to IV fentanyl

Hans Ulrich Bender1, Hans-Georg Muench2, Claudia Franziska Nussbaum2

  • 1Center for Pediatric Palliative Care, Dr. von Hauner Children's Hospital, University of Munich Medical Center, Ludwig-Maximilians-University, Munich, Germany.

Insights

This case study details switching a preterm infant from levomethadone to fentanyl for opioid withdrawal. It suggests a conversion ratio and highlights critical steps for neonates during opioid rotation.

Area of Science:

  • Pediatric intensive care
  • Neonatal pharmacology
  • Pain management

Background:

  • Levomethadone is used for iatrogenic opioid withdrawal in pediatric intensive care units.
  • Limited data exists on opioid rotation from methadone in pediatric patients.
  • Switching opioids in critically ill neonates requires careful consideration.

Purpose of the Study:

  • To report the successful switch from intravenous levomethadone to intravenous fentanyl in a critically ill preterm infant.
  • To identify a potential conversion ratio for this specific opioid rotation in neonates.
  • To emphasize critical steps for safe opioid rotation in unstable infants.

Main Methods:

  • Case report of a preterm infant in unstable condition undergoing opioid withdrawal management.
  • Switch from intravenous levomethadone to intravenous fentanyl.
  • Careful titration and dose adjustment based on clinical response.

Main Results:

  • A possible levomethadone to fentanyl conversion ratio of 6.0-4.5:1 was identified.
  • Successful transition to fentanyl was achieved, managing the infant's condition.
  • Critical steps included ensuring equipotency and dose reduction for incomplete cross-tolerance.

Conclusions:

  • This case provides initial data on levomethadone to fentanyl conversion in neonates.
  • Equipotency and dose reduction are crucial for safe opioid rotation in unstable infants.
  • These observations may guide clinical practice when managing opioid withdrawal in neonates.

Related Concept Videos

Opioid Analgesics: Synthetic and Semisynthetic Opioids01:15

Opioid Analgesics: Synthetic and Semisynthetic Opioids

Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
621
Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
384
Drug Dosing: Infants and Children01:29

Drug Dosing: Infants and Children

Pediatric patient dosages diverge from adults due to disparities in body surface area, total body water, and extracellular fluid per kilogram of body weight. The dosing regimen considers the variations in pharmacokinetics and pharmacology across distinct age groups, encompassing preterm newborns, infants, young children, older children, and adolescents. Calculation of pediatric patient doses is predicated on determining body surface area, which exhibits a superior correlation with the child's...
74
Drug Delivery: Parenteral Route01:29

Drug Delivery: Parenteral Route

The parenteral route is a critical method of drug administration. It delivers compounds directly into the systemic circulation and bypasses the gastrointestinal tract. This approach is particularly advantageous for drugs that exhibit poor absorption or instability when administered orally.
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
1.1K
Pharmacokinetics in Pediatric Patients: Drug Excretion01:26

Pharmacokinetics in Pediatric Patients: Drug Excretion

In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
64
Factors Affecting Drug Response: Overview01:21

Factors Affecting Drug Response: Overview

When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
2.6K