[Effect of postoperative infusion and transfusion therapy on the serum level and renal losses of zinc, magnesium, copper, calcium and phosphates].

In 52 adult patients, serum levels and renal loss of zinc, magnesium, calcium, copper and anorganic phosphate were examined during the period of parenteral postoperative nutrition. Simultaneously performed analyses of applied infusion and protein solutions, as well as of conserved blood, yielded a markedly differing content of these bioelements. Particularly pronounced are the differences in zinc concentrations of individual infusion solutions. A random substitution of zinc and anorganic phosphate is insufficient since it does not correspond with the demand. For this reason, anorganic phosphate and zinc should only be purposively substituted.