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Published on: March 14, 2013
[Metabolic Bone Disease of Prematurity in Very Low Birthweight Infants: Retrospective Observational Study]
Raquel Costa1, Catarina Franco2, Nádia Santos1
1Serviço de Pediatria. Hospital Espírito Santo de Évora. Évora. Portugal.
Insights
Metabolic bone disease of prematurity (MBDP) affects very low birthweight newborns, with a 9.43% prevalence found in this study. Early screening and nutritional interventions are crucial for managing this condition in vulnerable infants.
Area of Science:
- Neonatology
- Pediatric Endocrinology
- Bone Metabolism
Background:
- Metabolic bone disease of prematurity (MBDP) is characterized by reduced bone mineralization in premature infants.
- Screening typically relies on serum alkaline phosphatase and phosphate levels.
Purpose of the Study:
- To determine the prevalence of MBDP in very low birthweight newborns.
- To identify risk factors associated with MBDP.
- To describe the growth patterns of affected infants.
Main Methods:
- An observational, retrospective, multicenter study was conducted in Portugal.
- Data were collected from very low birthweight newborns between May 2016 and April 2017.
- Demographic, clinical, and laboratory variables were analyzed.
Main Results:
- Five cases (9.43%) of MBDP were diagnosed among 53 included newborns.
- MBDP cases had lower gestational age and birth weight, and longer parenteral nutrition duration.
- Growth was similar between groups, but calcium/phosphate ratios were lower in MBDP patients.
Conclusions:
- The study found a lower prevalence of MBDP than reported in literature, with suboptimal screening completion rates.
- Identified risk factors align with existing research.
- Early screening, nutritional support, and physical stimulation are vital for managing MBDP and preventing complications.
Introduction:
Metabolic bone disease of prematurity consists in a decrease of bone matrix mineral content, in comparison with the level expected for gestational age. Screening of this condition is based on serum alkaline phosphatase and phosphate levels. The aim of this study is to evaluate the prevalence of metabolic bone disease of prematurity, to assess the aspects associated with a higher risk of this disease and to describe the growth of newborns with birth weight below 1500 g and metabolic bone disease of prematurity.
Material And Methods:
Observational, retrospective, multicenter and descriptive study in three neonatal intensive care units in Portugal, from May 1st 2016 to April 30th 2017. A convenience sample of very low birthweight newborns was obtained. Demographic, clinical, and laboratory variables were described in newborns with and without metabolic bone disease of prematurity.
Results:
A total of 53 newborns were included in this study: 30 males, 16 with gestational age ≤ 28 weeks. Five cases of metabolic bone disease of prematurity were diagnosed. In this group, the majority of patients was male and presented a lower gestational age and birth weight, in comparison with the group without metabolic bone disease of prematurity. The average duration of parenteral nutrition was higher in newborns with metabolic bone disease of prematurity and the calcium/phosphate ratio was lower than the recommended values. Growth was similar in both groups. No patient with metabolic bone disease of prematurity underwent physical rehabilitation.
Discussion:
The prevalence of metabolic bone disease of prematurity was 9.43%, which is lower than what is described in the literature. However, only 50% of newborns completed the screening according to the recommendations. The main risk factors identified concur with the literature.
Conclusion:
Metabolic bone disease of prematurity is a frequent but underdiagnosed comorbidity in very low birthweight newborns. It is essential to screen newborns at risk for this condition, using biochemical markers, as well as structure nutritional interventions and physical stimulation in order to avoid short and long-term consequences of this disease.
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