Abstract
Objective: We examined the meaning of placental weight, form (massive and thick or extended and flat) and circumference for early somatic and psychomotor childhood development. Methods:In this prospective study, fresh placentas (n = 265) were measured for weight and circumference and correlated with neonatal data. A subset of placentas statistically defined as ‘massive’ (circumference <10th percentile) and ‘extended’ (circumference >90th percentile) was correlated with somatic and basic psychomotor variables during the first 4 years of life. A ‘medium’ category (circumference 45–55th percentile) served as control. Results: Placental weight correlated with birth weight (r = 0.53, p < 0.0005) and mean infantile weight until month 48 (r = 0.29, p = 0.016). Placental circumference weakly correlated with birth weight (r = 0.17, p = 0.011) but not with mean infantile weight. Placental extremes (massive, medium, extended) demonstrated significant influences only on very early somatic growth (day 1 to month 4): Massive placentas were associated with heavier and taller children (p = 0.02–0.033). Markers of early psychomotor development (first sitting, crawling, running, one- and two-word sentences) were not related with placental weight or circumference nor with extremes of placental morphology. Conclusion: Placental weight and circumference seem to influence very early somatic but not psychomotor development.
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