251-POS

Abstract

Objectives To compare the relative risk of eclampsia and frequency of prenatal visits. Methods We evaluated the risk of gestational hypertension with the number of prenatal visits in 4,247,694 delivered women included in the CDC 2008 Vital Stats dataset. The incidence of eclampsia among subgroups of women defined by their number of prenatal visits was calculated. Relative risks were determined for each subgroup by comparing the incidence of eclampsia in each subgroup compared to those women with 13–14 visits (reference group). These groups were (1) no visits, (2) 1–2 visits, (3) 3–4 visits, (4) 5–6 visits, (5) 7–8 visits, (6) 9–10 visits, (7) 11–12 visits, (8) 13–14 visits {reference group}, (9) 15–16 visits, (10) 17–18 visits, (11) 19 or more visits. Results The relative risk of eclampsia increased as the number of prenatal visits decreased, with the highest risk among those women who had no prenatal visits (RR = 2.16, 95% CI = 1.90–2.45). The relative risk of eclampsia also increased as the number of prenatal visits increased above 13–14 visits. The highest risk was for those women with 19 or more visits (RR = 2.34, 95%, CI = 2.13–2.58). Conclusions Fewer prenatal visits may be associated with a higher risk of eclampsia. This may be due to iatrogenic preterm delivery or poor patient compliance. Eclampsia may also be associated with an increased number of prenatal visits. This may be due to close monitoring of a high risk patient. Disclosures E.T. Greeley: None. K.L. Terry: None. J.V. Spencer: None.