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The focus of dietary therapy for long chain fatty acid oxidation disorders (LC‐FAODs) is to minimize fatty acid oxidation by avoiding fasting and providing sufficient calories. Dietary therapy involves restriction of long‐chain triglycerides (LCT), and provision of medium‐chain triglycerides as an alternate energy source. It is well established that the use of breast milk through the first year of a newborn's life has significant health benefits. While very few medical contraindications to breastfeeding exist, feeding an infant with a severe carnitine acylcarnitine translocase (CACT) deficiency typically requires cessation of breastfeeding as approximately 50% of the calories in human milk come from LCT. In this case report, we present the innovative and successful use of skimmed breast milk incorporated into the dietary management of an infant with severe CACT deficiency. Given the poor prognosis for individuals with severe CACT deficiency on standard dietary therapy, the use of skimmed breast milk represents an important measure to try to improve short‐term and long‐term outcomes. Given the many proven benefits of breast milk, this case illustrates that skimmed breast milk can be combined with appropriate fat sources to provide complete nutrition for children with severe CACT deficiency. After over 12 months on this regimen, this patient has experienced normal growth and development and has had no acute decompensations.

Growing evidence supporting the health benefits of human milk, particularly in the preterm population, has led to rising demand for donor human milk in NICUs and pediatric hospitals. There are no previous reports describing the use of unpasteurized shared human milk (USHM) in the hospital setting, but the use of USHM solicited from community donors through social networks appears to be common. Many pediatric hospitals permit inpatients to receive breast milk that has been screened and pasteurized by a human milk banking organization and will provide pasteurized donor human milk (PDHM) only to infants who are preterm or have specific medical conditions. These policies are designed to minimize potential adverse effects from improperly handled or screened donor milk and to target patients who would experience the greatest benefit in health outcomes with donor milk use. We explore the ethical and health implications of 2 cases of medically complex infants who did not meet criteria in our tertiary care hospital for the use of PDHM from a regulated human milk bank and were incidentally found to be using USHM. These cases raise questions about how best to balance the ethical principles of beneficence, nonmaleficence, justice, and patient autonomy in the provision of PDHM, a limited resource. Health care staff should ask about USHM use to provide adequate counseling about the risks and benefits of various feeding options in the context of an infant's medical condition.

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