Related Experiment Videos
[Reference birthweight for multiple births in Japan]
1Joto Hospital.
Summary
Twin birthweights are lower than singletons, with variations based on sex, birth order, and maternal parity. These findings establish crucial reference birthweights for multiple births, distinct from singleton standards.
Area of Science:
- Obstetrics and Gynecology
- Perinatal Medicine
- Human Growth and Development
Context:
- Intrauterine growth curves are essential for assessing fetal well-being.
- Multiple births present unique growth patterns compared to singletons.
- Accurate growth data is vital for clinical management and research.
Purpose:
- To establish intrauterine growth curves for twins based on gestational age.
- To compare twin birthweights with those of singleton births in Japan.
- To analyze factors influencing twin birthweight, including sex, birth order, and maternal parity.
Summary:
- Calculated twin intrauterine growth curves using Japanese birth certificate data (1988-1991).
- Median twin birthweights were lower than singletons, with differences increasing with gestational age.
- Identified significant influences of sex, birth order, and maternal parity on twin birthweights. Birthweights were highest in twins, followed by triplets, then quadruplets.
Impact:
- Provides essential reference birthweight charts specifically for multiple gestations.
- Highlights the need for distinct growth standards for twins and other multiples.
- Informs clinical practice regarding the monitoring and management of multiple pregnancies.