[Serological conflict: relation between antibody titer, Liley's zone and the condition of the fetus and newborn infant].

On the basis of analysis of 128 cases of serological incompatibility it was found that antibodies to Rh in titres of 1/8 or less constituted a good prognostic factor, and without evidence of fetal distress in USG examination this was not an indication to treatment undertaking. If the titre is from 1/16 to 1/128 the prognosis is worse and the degree of fetal haemolytic disease risk may be estimated on the basis of USG and Liley's zone. The prognosis is very bad in case of titre exceeding 1/128 and high Liley's zone, and without effective treatment of haemolytic disease in fetal life only few fetuses survive.