Postnatal Growth in a Cohort of Sardinian Intrauterine Growth-Restricted Infants

Maria Grazia Clemente1, Giampiero Capobianco2, Paolo Mattia Galasso1

  • 1Pediatric Clinic, Department of Surgical, Microsurgical and Medical Sciences, University of Sassari, Sassari, Italy.

Insights

Infants with intrauterine growth restriction (IUGR) often show significant catch-up growth in weight, length, and head circumference during their first year. This catch-up growth is crucial for their development up to the third postnatal year.

Area of Science:

  • Pediatrics
  • Neonatology
  • Human Growth and Development

Background:

  • Intrauterine growth restriction (IUGR) affects fetal development, leading to smaller infants at birth.
  • Catch-up growth is a known phenomenon in infants born with IUGR, but its extent and duration require further study.
  • Understanding postnatal growth patterns in IUGR infants is essential for monitoring and intervention.

Purpose of the Study:

  • To evaluate the postnatal growth trajectory of infants diagnosed with intrauterine growth restriction (IUGR).
  • To compare the anthropometric parameters of IUGR infants with a control group from birth to three years.
  • To determine the prevalence and timing of catch-up growth in a cohort of IUGR infants.

Main Methods:

  • An observational retrospective study involving 12 IUGR infants and 12 control infants.
  • Measurement of anthropometric parameters: weight (W), length (L), and head circumference (HC).
  • Data collection from birth up to the third postnatal year.

Main Results:

  • Significant differences in W, L, and HC were observed at birth between IUGR and control groups (p < 0.0001 for all).
  • During the first year, 70% (8/12) of IUGR infants demonstrated significant catch-up growth across all measured parameters.
  • IUGR infants who experienced catch-up growth maintained regular growth patterns until the third postnatal year.

Conclusions:

  • The majority of infants with IUGR exhibit significant catch-up growth, primarily within the first 12 months of life.
  • Postnatal growth patterns in IUGR infants are variable, with some showing catch-up and others not.
  • Further research into IUGR causes is needed for improved prevention and individualized treatment strategies.

Related Concept Videos

Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
22.6K
Oxygen Requirements and Growth Patterns01:29

Oxygen Requirements and Growth Patterns

Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.7K
Population Growth00:57

Population Growth

Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
28.9K
Longitudinal Studies01:26

Longitudinal Studies

Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
579
Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...
4.5K
Microbial Growth Measurement: Indirect Methods01:27

Microbial Growth Measurement: Indirect Methods

Estimating microbial growth is essential for understanding population dynamics and environmental adaptations. Indirect methods provide valuable insights by measuring parameters such as turbidity, metabolic activity, and biomass, enabling efficient and reproducible assessments.During exponential growth, microbial cells scatter light proportionally to their biomass, a principle used in turbidity measurements. About one million cells per milliliter produce detectable scattering, which a...
1.7K