[Comparison of 2 methods of partial exchange transfusion in newborns with polycythemia: peripheral-peripheral and central-peripheral].

: Oneself presents the result of the prospective study from evaluate the morbility of the partial exchange-transfusion (exchange-dilution) to effect in two forms in newborn with polycythemia. The A group was newborn in the which extraction of blood volume was on peripheric vein is oneself administration crystalloid solution for another periphery vein; the B group was utilized umbilical vein to remove blood volume for another periphery vein is administration the crystalloid. To have 20 newborn in each group; to predisponent prenatal factors global were toxemic (12%); the plethora was the more frequent sing (55%) and nausea in (37%). Were not encountered difference in both groups for: gestational age, weight, birth rate, trophism, polycythemia type (asymptomatic vs symptomatic); neither to have difference in the seric electrolytes, protein and vital signs before and after procedure. Were encountered more infections process in the B group (P < 0.05). Were concluded what the exchange-dilution for polycythemia in newborn of term must be for periphery vein exclusive with security of not production metabolic and hemodynamic changes and without risk for sepsis and/or enterocolitis for manipulation of umbilical vessels.