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[Clinical significance of intrauterine growth retardation]
Insights
Proportional and disproportional fetal growth retardation significantly increase perinatal mortality, primarily through intrauterine deaths. Proportional retardation poses a greater risk to newborns than disproportional retardation.
Area of Science:
- Obstetrics and Gynecology
- Neonatology
- Perinatal Medicine
Context:
- Fetal growth retardation (FGR) is a critical concern in perinatal medicine.
- Understanding the distinct impacts of proportional versus disproportional FGR is essential for accurate risk assessment.
- Existing classification systems may not adequately differentiate these subtypes.
Purpose:
- To investigate the influence of proportional and disproportional fetal growth retardation on perinatal outcomes.
- To compare the risks associated with each type of retardation regarding intrauterine mortality, prematurity, low birth weight, and neonatal morbidity.
- To evaluate the efficacy of a novel NDN classification system in distinguishing between proportional and disproportional FGR.
Summary:
- Both proportional and disproportional fetal growth retardation elevate perinatal mortality, predominantly by increasing intrauterine mortality.
- Proportional FGR presents a substantially higher risk to newborns compared to disproportional FGR, although both are identified risk factors.
- The newly developed NDN classification system effectively differentiates between these two types of fetal growth retardation.
Impact:
- Provides crucial insights into the differential risks posed by types of fetal growth retardation.
- Highlights the importance of accurate classification for targeted interventions and improved perinatal care.
- Offers a validated tool (NDN classification) for clinicians and researchers to better manage pregnancies complicated by FGR.
Abstract:
The authors have examined the measure of the influence of the proportional and disproportional retardation on the results of the pre- and subnatal observation of the fetus and on the frequency of perinatal mortality and newborns' morbidity, premature birth and newborns born with low birth weight. The authors have stated the two types of retardation leads to a higher global perinatal mortality mainly by causing a more frequent intrauterine mortality. Comparing the results of the retarded newborns to those of the somatically normally developed neonates they prove it from several aspects that the proportional retardation means a much higher risk for the newborn than the disproportional retardation which is also a risk factor. The new NDN classification system elaborated and used by the authors is suitable for differing the two types of retarded newborns.