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Pediatric Animal Model of Extracorporeal Cardiopulmonary Resuscitation After Prolonged Circulatory Arrest
Published on: May 26, 2023
Pediatric cardiovascular drug dosing in critically ill children and extracorporeal membrane oxygenation
Kevin Watt1, Jennifer S Li, Daniel K Benjamin
1Department of Pediatrics Duke University, Durham, NC, USA.
Insights
Extracorporeal membrane oxygenation (ECMO) significantly alters drug pharmacokinetics in critically ill children. More research is crucial to establish safe and effective cardiovascular drug dosing for pediatric ECMO patients.
Area of Science:
- Pediatric critical care medicine
- Cardiovascular pharmacology
- Extracorporeal life support
Background:
- Cardiovascular disease is a significant cause of morbidity and mortality in children.
- Extracorporeal membrane oxygenation (ECMO) is a vital therapy for pediatric cardiorespiratory failure.
- Limited pharmacokinetic data exist for cardiovascular drugs in pediatric ECMO patients.
Purpose of the Study:
- To review the current understanding of cardiovascular drug pharmacokinetics in pediatric ECMO patients.
- To identify drugs that may require dosing adjustments during ECMO support.
- To highlight the need for further research in this area.
Main Methods:
- Literature review of studies reporting pharmacokinetic data for cardiovascular drugs in pediatric ECMO patients.
- Analysis of existing case reports and limited trials.
- Categorization of drugs based on potential need for dosing modification.
Main Results:
- Pharmacokinetic alterations (clearance, volume of distribution) are suggested by the ECMO circuit.
- Eleven cardiovascular drugs have been partially studied in pediatric ECMO patients.
- Some drugs (esmolol, amiodarone, nesiritide, bumetanide, sildenafil, prostaglandin E1) may require dosing changes, while others (hydralazine, nicardipine, furosemide, epinephrine, dopamine) might not.
- Definitive dosing recommendations are not possible due to limited trial data.
Conclusions:
- Significant knowledge gaps exist regarding cardiovascular drug pharmacokinetics in pediatric ECMO.
- Current data are primarily based on limited case reports, precluding definitive dosing guidelines.
- Further research evaluating drug pharmacokinetics in ECMO patients is essential to optimize therapy and prevent adverse events.
Abstract:
Cardiovascular disease in children is common and results in significant morbidity and mortality. The sickest children with cardiovascular disease may require support with extracorporeal membrane oxygenation (ECMO), which provides life-saving assistance for children with refractory cardiorespiratory failure. Many classes of cardiovascular drugs are used in children, but very few of these agents have been well studied in children. The knowledge gap is even more pronounced in children supported by ECMO. Pharmacokinetic (PK) data collected to date (primarily from antibiotics and sedatives) suggest that the ECMO circuit has the potential to significantly alter the PK of drugs including changes in clearance and volume of distribution. Of all cardiovascular drugs administered to children supported by ECMO, only 11 have been partially studied and reported in the medical literature. Esmolol, amiodarone, nesiritide, bumetanide, sildenafil, and prostaglandin E1 seem to require dosing modifications in children supported by ECMO, whereas it seems that hydralazine, nicardipine, furosemide, epinephrine, and dopamine can be dosed similarly to children not supported by ECMO. However, trials evaluating the PK of these drugs in patients supported by ECMO are extremely limited (ie, case reports), and therefore, definitive dosing recommendations are not plausible. Research efforts should focus on evaluating the PK of drugs in patients on ECMO to avoid therapeutic failures or unnecessary toxicities.
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