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Related Experiment Videos

Laryngeal growth in infancy.

I Sellars1, E N Keen

  • 1Department of Anatomy and Cell Biology, Medical School, University of Cape Town, Observatory.

The Journal of Laryngology and Otology
|August 1, 1990
PubMed
Summary

Cricoid ring size in infants is crucial. Small rings in the first two weeks may indicate early infant death, making mortuary specimens unreliable for assessing thriving infants. Growth rates from two weeks to three years are detailed.

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Area of Science:

  • Pediatric anatomy
  • Infant physiology

Background:

  • The cricoid ring's growth is vital for infant airway patency.
  • Early infant mortality may be linked to cricoid ring size.

Purpose of the Study:

  • To analyze cricoid ring growth in infants.
  • To determine the reliability of early infant mortuary specimens for growth assessment.
  • To compare infant cricoid ring dimensions with existing English data.

Main Methods:

  • Measurement of cricoid ring dimensions from infant specimens.
  • Analysis of growth rates from two weeks to three years of age.
  • Comparative analysis with published data from England.

Main Results:

  • A small cricoid ring in the first two weeks of life correlates with early infant death.
  • Mortuary specimens from infants under two weeks are not representative of thriving infants.
  • Collected specimens were systematically smaller than English counterparts for the same age.

Conclusions:

  • Early infant death may be associated with reduced cricoid ring size.
  • Caution is advised when using early infant mortuary specimens for growth studies.
  • Infant cricoid ring dimensions may vary geographically, with local specimens showing smaller sizes.

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