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[Low birth weight as an additional indication for chromosomal analysis]

M L Martínez-Frías1, E Bermejo Sánchez, E Rodríguez Pinilla

  • 1ECEMC, Facultad de Medicina, Universidad Complutense de Madrid.

Anales Espanoles De Pediatria
|June 1, 1997
PubMed
Summary

Infants with chromosomal abnormalities, such as trisomy 18, often have low birth weights. This finding suggests that low birth weight in infants with anomalies warrants chromosomal analysis.

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Area of Science:

  • Genetics
  • Pediatrics
  • Epidemiology

Background:

  • Low birth weight is commonly observed in infants with chromosomal abnormalities like trisomy 18 and trisomy 13.
  • Limited epidemiological data exists on birth weights across various chromosomal abnormality groups.

Purpose of the Study:

  • To analyze birth weights and gestational ages in a large cohort of malformed infants with chromosomal anomalies.
  • To compare birth weights among different clinical groups of malformed infants.

Main Methods:

  • Analysis of birth weights and gestational ages from 23,155 malformed infants and a comparable number of non-malformed infants.
  • Stratification of data by specific chromosomal anomaly groups.
  • Comparative analysis of birth weights within clinical groups.

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Main Results:

  • Infants with most chromosomal abnormalities exhibited significantly lower birth weights compared to control groups.
  • Specific trends in birth weight were observed across different chromosomal anomaly classifications.

Conclusions:

  • A strong association exists between chromosomal alterations and low birth weight.
  • Low birth weight in infants presenting with minor or major anomalies should be considered an indicator for chromosomal analysis.