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Hazards of parenteral treatment: do particles count?
J W Puntis1, K M Wilkins, P A Ball
1Institute of Child Health, University of Birmingham, Birmingham Maternity Hospital.
Particulate contaminants in parenteral nutrition, particularly from fat emulsions, are linked to pulmonary hypertension and arteritis in infants. Filtration of intravenous infusions may mitigate these particle-associated risks.
Area of Science:
- Pediatric Pathology
- Neonatal Nutrition
- Cardiovascular Research
Background:
- Prolonged parenteral nutrition (PN) is essential for some infants but carries potential risks.
- Pulmonary hypertension and granulomatous pulmonary arteritis have been observed in infants receiving PN.
- Particulate matter in intravenous infusions is a suspected contributor to these adverse events.
Purpose of the Study:
- To investigate the association between PN and pulmonary vascular lesions in infants.
- To quantify particulate contamination in common PN components.
- To assess the potential of in-line filtration to reduce particle load.
Main Methods:
- Necropsy review of infants receiving PN compared to sudden infant death syndrome controls.
- Automated particle counting and optical microscopy to quantify particles in amino acid/dextrose solutions and fat emulsions.
- Calculation of daily particle load in a standard infant PN regimen.
Main Results:
- Two of 41 infants on PN showed pulmonary artery granulomata, versus none in 32 controls.
- Parenteral feed infusions contained approximately 37,000 particles (2-100 microns) daily for a 3000g infant.
- Fat emulsions accounted for 80% of the total particle load.
Conclusions:
- Particulate contaminants in PN, predominantly from fat emulsions, are implicated in infant pulmonary arteritis.
- In-line filtration of intravenous infusions is a potential strategy to reduce particle-associated complications.
- Development of effective filters for lipid emulsions is needed.
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