Abstract

ABSTACTDocumented fetal inactivity is strongly suggestive of fetal jeopardy, but the significance of excessive activity over a prolonged period has not been reported. Using data gathered from fetal movement charts recorded by 931 patients, fetal hyperactivity was defined statistically as 40 or more movements perceived per hour for at least 14 days shortly before delivery. No association between excessive fetal activity and premature labor or umbilical cord complications was found. All 47 (5%) fetuses found to be hyperactive remained vigorous during any trial of labor and with appropriate nursery care did well after delivery. Follow-up examination of 24 infants between 3 and 18 months of age has revealed no unusual growth, developmental, or temperamental patterns. Although the reason for excessive fetal activity remains unclear, this finding does not appear to be a worrisome prognostic sign.