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Updated: May 2, 2026
Point-of-Care Ultrasound for Peripheral Veno-Arterial Extracorporeal Membrane Oxygenation Without Left Ventricular Venting
Published on: January 17, 2025
Plasma fatty acid levels in children during extracorporeal membrane oxygenation support--a pilot study
Insights
Plasma fatty acids are high in children on extracorporeal membrane oxygenation (ECMO) but decrease over time. Further research is needed to explore correlations with clinical factors and potential metabolic interventions.
Area of Science:
- Biochemistry
- Pediatric Cardiology
- Critical Care Medicine
Background:
- Elevated plasma fatty acids are linked to myocardial injury after cardiopulmonary bypass (CPB).
- Extracorporeal membrane oxygenation (ECMO) provides prolonged life support for cardiac arrest, similar to CPB but for longer durations.
- Understanding fatty acid profiles during ECMO is crucial for pediatric cardiac patients.
Purpose of the Study:
- To measure plasma fatty acid levels in children receiving venoarterial ECMO support.
- To observe the trend of fatty acid levels over time during ECMO.
- To investigate potential correlations between fatty acid levels and clinical variables.
Main Methods:
- Five pediatric patients (0.3-36 months) on ECMO were enrolled.
- Plasma fatty acids were measured at 8-hour intervals over 1-3 days, starting 32-56 hours into ECMO.
- Concurrent data on inotropes, vasoactive agents, and ECMO duration were collected.
Main Results:
- Plasma fatty acid levels were elevated compared to normal values.
- Fatty acid levels showed a continuous decrease over the study period (p < .0001).
- No significant correlation was found between fatty acid levels and age, vasoactive agent dosage, or ECMO duration.
Conclusions:
- Plasma fatty acid levels are elevated in pediatric ECMO patients and decrease over time.
- Higher fatty acid levels may be present in the initial hours of ECMO support.
- Further studies with larger cohorts are needed to elucidate fatty acid dynamics and their clinical implications, potentially guiding metabolic interventions to improve myocardial recovery.
Abstract:
Plasma fatty acids levels are markedly elevated in patients with myocardial ischemic-reperfusion injury including those after cardiopulmonary bypass (CPB). High levels of fatty acids have detrimental effects on myocardial function. Extracorporeal membrane oxygenation (ECMO) is like CPB, but much longer, to provide a life-saving support for patients with cardiac arrest. We measured plasma fatty acid levels in children during ECMO support. Five children (aged .3-36 months, median 20 months) receiving venoarterial ECMO support after cardiac arrest in 2010 and 2011 were enrolled. The study was initiated at 32-56 hours after the start of ECMO support as a result of the complicated clinical scenario. Fatty acids were measured at 8-hour intervals for 1-3 days. The dosage of inotropes and vasoactive agents was recorded concurrently. The duration of ECMO ranged from 70 to 240 hours (median 177 hours). Four patients were successfully weaned off ECMO support. One died after termination of ECMO. Levels of fatty acids were elevated compared with the normal values. Overall, fatty acid levels continuously decreased over time (p < .0001), the mean being 1.03 +/- .33 mmol/L in 30-50 hours, 1.01 +/- .57 in 50-70 hours, .81 +/- .32 in 70-90 hours, and .63 +/- .23 hours. No correlation was found between fatty acid levels and other clinical variables, including age, dosage of inotropes and vasoactive agents, or ECMO duration. Plasma fatty acids levels are elevated in children during ECMO support and continuously decrease over time. Fatty acid levels may be markedly higher in the immediate hours after the initiation of ECMO. Data from more patients are needed to understand the profiles of fatty acids and the correlations with clinical variables. Metabolic manipulations to decrease fatty acids might improve myocardial recovery in patients undergoing ECMO support.
