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Developmental relations between the weight of internal organs and somatic features of fetuses and newborns
Insights
This study reveals statistical relationships between fetal organ weights and body dimensions. These developmental links are strongest during the 6th to 10th months of gestation.
Area of Science:
- Developmental biology
- Biostatistics
- Human anatomy
Background:
- Understanding fetal growth requires analyzing the relationship between organ development and overall body size.
- Previous research has explored organogenesis but often lacks comprehensive statistical analysis of interrelations with somatic features.
Purpose of the Study:
- To statistically investigate developmental interrelations between fetal organ weights (brain, heart, lungs, liver, spleen, kidneys, adrenal glands, thymus) and somatic features (total length, crown-rump length, body weight, head, shoulder, chest, and abdomen circumference).
- To determine the character and force of these relationships across different stages of fetal and newborn development.
Main Methods:
- Linear correlation coefficients were used to assess relations between individual organ weights and somatic features.
- Multiple regression analysis examined the dependence of particular organs on the complex of somatic features.
- Canonical correlation coefficients investigated the relationship between two feature complexes: all organs and all somatic features.
Main Results:
- A statistically significant developmental relationship exists between internal organ weights and somatic features during the fetal period.
- These developmental relations are most pronounced between the 6th and 10th months of intrauterine life.
- The identified relationships are weaker in the 5th month of gestation and in postmature fetuses and newborns.
Conclusions:
- The study confirms a significant statistical developmental link between organ weight and body dimensions in fetuses.
- The strength of this relationship varies throughout gestation, peaking in the later stages.
- These findings contribute to a better understanding of human fetal growth dynamics.
Abstract:
The paper contains results of investigations on statistical developmental interrelations between the weight of brain, heart, lungs, liver, spleen, kidneys, adrenal glands and thymus, and the total length, the crown-rump length and the body weight, and the circumference of head, shoulders, chest and abdomen of fetuses and newborns in the age from 17 to 43 weeks of life. The character and the force of the relations between the degree of the development of the weight of organs and the body dimensions was investigated by statistical methods on three levels. On the basis of the value of linear correlation coefficients, statistical relations were determined between the weight of the particular organs and the particular sometic features. The dependence between the particular organs and the complex of somatic features was determined on the basis on the multiple regression analysis. On the other hand the relation between two complexes of features, i.e. all organs and all somatic features was investigated with the help of canonical correlation coefficients. The analysis of results indicated that between the weight of internal organs and the somatic features in the fetal period there exists a statistical developmental relation. The developmental relations are most strongly marked between the 6th and the 10th months of intrauterine life, while in the 5th month of life and in postmature fetuses and newborns they are weaker.