ABSTRACT
Twin-to-twin transfusion syndrome (TTTS) has been related to unbalanced unidirectional
arteriovenous anastomoses in the placenta of monochorionic diamniotic (DiMo) twin
gestations. As maternal malnutrition accounting for hypoproteinemia and anemia has
been detected in severe cases of TTTS, the purpose of this study was to evaluate the
impact of early diet supplementation on TTTS. Fifty-one DiMo twin pregnancies were
given commercially available oral nutritional diet supplements and then compared in
a retrospective cohort study to 52 twin gestations with the same chorionicity but
not subjected to nutritional supplementation. Diet supplementation was associated
with lower overall incidence of TTTS (20/52 versus 8/51, p = 0.02) and with lower prevalence of TTTS at delivery (18/52 versus 6/51, p = 0.012) when compared with no supplementation. Nutritional intervention also significantly
prolonged the time between the diagnosis of TTTS and delivery (9.4 ± 3.7 weeks versus
4.6 ± 6.5 weeks; p = 0.014). The earlier nutritional regimen was introduced, the lesser chance of detecting
TTTS (p = 0.001). Although not statistically significant, dietary intervention was also associated
with lower Quintero stage, fewer invasive treatments, and lower twin birth weight
discordance. Diet supplementation appears to counter maternal metabolic abnormalities
in DiMo twin pregnancies and improve perinatal outcomes in TTTS when combined with
the standard therapeutic options.
KEYWORDS
Twin-to-twin transfusion syndrome - nutritional supplementation - pregnancy outcome
- diamniotic monochorionic twins
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Giuseppe ChiossiM.D.
Allegheny General Hospital
7th Floor South Tower, 320 East North Avenue, Pittsburgh, PA 15212
Email: ossidi74seppie@yahoo.it