Atrial natriuretic factor in normal newborn infants and its effects on kidney function in anoxic syndrome and respiratory distress

: The Authors have studied 26 newborns suffering from anossic syndrome and/or respiratory distress. In them are valued as well as the renal function, also the behaviour of atrial natriuretic factor (F.A.N.). As a group of control 25 healthy and to term newborns were studied. In all subjects studied, but more specifically in the anossic, it became evident a net increase of F.A.N., which however was within the normal ranges about the 15th year of life. The Authors conclude that in normal newborn this behaviour of F.A.N. reflects the important circulation modification which is certified after birth, whereas in pathological newborns, in whom 69% of cases a functional renal failure is present, the increase of F.A.N. is not without significance in the shortening of time of re-establishment of renal function.