[Capillary resistance in premature and newborn infants and its relation to hemostatic potential]

Capillary resistance, platelet count, platelet adhesiveness and aggregation and thrombelastogramm (TEG) were studied in 40 healthy newborn infants (term eutrophic, preterm eutrophic and hypotropic). The capillary resistance was normal in all cases. The physiologic decrease of platelet aggregation in newborns and the prolonged clotting time in TEG (hypotrophic infants) were without influence on the capillary resistance. An important factor of the normal capillary resistance in newborns is normal platelet adhesiveness.