Asymptomatic shedding of herpesvirus during labor.

Cervical cultures of 2013 consecutive obstetric patients with no history of genital herpes simplex virus infection were used to determine the frequency of asymptomatic herpes simplex virus shedding in labor. Four (0.20%) of these patients had positive cultures.

Effect of fetal hypercapnia on maternal and fetal cardiovascular and respiratory function.

After direct infusion of a carbonic anhydrase inhibitor to the fetus the fetal PCO2 increased to 70-80 mm Hg. Under the conditions of our sheep preparation no changes were seen in uterine or umbilical blood flows.