alexa Impact of pregnancy-induced hypertension on stillbirth and neonatal mortality.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Ananth CV, Basso O

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Abstract BACKGROUND: Hypertensive disorders of pregnancy are more frequent in primiparous women, but may be more severe in multiparas. We examined trends in stillbirth and neonatal mortality related to pregnancy-induced hypertension (PIH), and explored whether mortality varied by parity and maternal race. METHODS: We carried out a population-based study of 57 million singleton live births and stillbirths (24-46 weeks' gestation) in the United States between 1990 and 2004. We estimated rates and adjusted odds ratios (ORs) of stillbirth and neonatal death in relation to PIH, comparing births in 1990-1991 with 2003-2004. RESULTS: PIH increased from 3.0\% in 1990-1991 to 3.8\% in 2003-2004. In both periods, PIH was associated with a higher risk of stillbirth and neonatal death. We explored this in more detail in 2003-2004, and observed that the increased risk of PIH-related stillbirth was higher in women having their second or higher-order births (OR = 2.2 [95\% confidence interval = 2.1-2.4]) compared with women having their first birth (1.5 [1.4-1.6]). Patterns were similar for neonatal death (1.3 [1.2-1.4] in first and 1.6 [1.5-1.8] in second or higher-order births). Among multiparas, the association between PIH and stillbirth was stronger in black women (2.9 [2.7-3.2]) than white women (2.0 [1.8-2.1]). CONCLUSIONS: A substantial burden of stillbirth and neonatal mortality is associated with PIH, especially among multiparous women, which may be due to more severe PIH, or to a higher burden of underlying disease.
This article was published in Epidemiology and referenced in Journal of Diabetes & Metabolism

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