Growth faltering in a preterm infant associated with inaccurate formula preparation by an automated formula dispenser

Lisa Nobel1, Stefan Johansson2,3, Björn Lundberg2,4

  • 1Sachs' Children and Youth Hospital, Södersjukhuset, Region Stockholm, Stockholm, Sweden lisa.nobel@regionstockholm.se.

BMJ Case Reports
|December 23, 2025
PubMed

Insights

Automated formula dispensers can incorrectly prepare milk, leading to underdilution and faltered growth in infants. Healthcare professionals should improve history-taking and inform caregivers that these devices are not infallible.

Area of Science:

  • Pediatrics
  • Neonatology
  • Infant Nutrition

Background:

  • Inadequate caloric intake is a primary cause of faltered growth in infants.
  • Proper milk formula preparation, including correct dilution, is crucial for infant development.
  • Automated formula dispensers are increasingly used but may pose risks.

Purpose of the Study:

  • To report a case of faltered growth in a preterm infant due to underdiluted formula from an automated dispenser.
  • To raise awareness among healthcare professionals about the potential risks associated with automated formula dispensers.
  • To emphasize the importance of thorough history-taking when evaluating infant faltered growth.

Main Methods:

  • Case report of a preterm infant presenting with faltered growth, apnoea, and hypothermia.
  • Clinical examination, investigations, and detailed history taking were performed.
  • Analysis of milk formula preparation methods, including the use of an automated dispenser.

Main Results:

  • The infant's faltered growth was determined to be caused by underdiluted milk formula.
  • The underdilution was a result of a malfunction or improper use of an automated formula dispenser.
  • The case highlights a potential, previously underestimated, risk in infant feeding technology.

Conclusions:

  • Automated formula dispensers, while convenient, can lead to serious feeding errors like underdilution.
  • Healthcare providers must remain vigilant in assessing infant feeding practices, even with technological aids.
  • Caregivers should be educated that automated dispensers require careful monitoring and are not foolproof.