Pharmacokinetics during pregnancy and delivery.

The pharmacokinetics of certain drugs were studied in the following patient groups: in women in stage III of pregnancy, in women in labor, and in non-pregnant women as a control group. In late gravidity several parameters of distribution and elimination change. Nevertheless, it is not necessary to modify the usual dose schedule. However, sulfonamides and antibiotics should be administered in the upper range of dosage. In contrast to late pregnancy, we found elimination of drugs to be always retarded during labor. Attention must be paid to accumulation, which may occur.