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Published on: December 1, 2023
Changes of laryngeal parameters during intrauterine life
Aleksandra Gawlikowska-Sroka1, D Miklaszewska, E Dzieciolowska-Baran
1Department of General and Clinical Anatomy, Pomeranian Medical University, Szczecin, Poland. gawlikow@ams.edu.pl
Insights
This study details fetal airway cartilage development, revealing correlations between laryngeal size and crown-rump length. Findings highlight thyroid cartilage sexual dimorphism, aiding prenatal diagnosis and emergency airway management.
Area of Science:
- Anatomy
- Developmental Biology
- Neonatal Medicine
Background:
- Advances in neonatal medicine rely on understanding fetal airway anatomy.
- Early diagnosis and treatment of fetal respiratory diseases necessitate detailed anatomical knowledge.
Purpose of the Study:
- To investigate the anatomical development of fetal thyroid and cricoid cartilages.
- To determine the structural variability of these cartilages throughout fetal life.
Main Methods:
- Analysis of 55 human fetal larynges (13-27 weeks gestation).
- Detailed measurements of thyroid and cricoid cartilages were performed.
- Correlations with crown-rump length and sex were calculated.
Main Results:
- Observed structural variability in thyroid and cricoid cartilages across gestation.
- Found a correlation between laryngeal size and crown-rump length in both sexes.
- Identified sexual dimorphism in the thyroid cartilage.
Conclusions:
- Results support prenatal examination analysis.
- Findings aid in planning treatment for neonatal airway emergencies.
Objective:
Increased care of fetal and neonatal airways has led to advances in neonatal medicine. The early diagnosis and treatment of respiratory diseases require a detailed knowledge of fetal airway anatomy and development. The aim of this study was to determine the anatomical development of the thyroid and cricoid cartilages and their structural variability during fetal life.
Material And Methods:
The study was performed on the thyroid and cricoid cartilages of 55 human fetal larynges of both sexes, between the ages of 13 and 27 weeks of intrauterine life. Numerous measurements of the thyroid and cricoid cartilages were performed.
Results:
Correlations between the obtained results were calculated in relation to the crown-rump (C-R) length of human fetuses and to sex. The structural variability of the thyroid and cricoid cartilages of human male and female fetuses in subsequent weeks of intrauterine life was observed. In both genders a correlation between laryngeal size and fetal crown-rump length, regardless of sex, was found. The thyroid cartilage presents a sexual dimorphism.
Conclusions:
The results of this study can be useful in the analysis of prenatal examinations, and in planning the treatment of airway emergencies.
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