Reference ranges and trajectories for blood pressure in pregnancy: findings from a follow-up study based on China Maternal and Newborn’s Health Monitoring System

ABSTRACT

Objectives: This study aimed to establish normal blood pressure reference ranges across gestation and maternal characteristics.

Methods: We conducted a follow-up study including 29,200 Chinese normal pregnant women. Multilevel restrictive cubic spline models were used to calculate normal blood pressure reference ranges among all population and stratified groups.

Results: In all normal pregnancies, the normal reference range of systolic blood pressure were 93.94-118.74 mmHg(2.5^th-97.5^th) and 97.35-124.63 mmHg at 12 and 37 weeks gestation, respectively while 58.79-74.21 mmHg and 59.19-78.25 mmHg were for diastolic blood pressure at 12 and 37 weeks gestation, which differed in subgroups stratified by prepregnancy body mass index and maternal age.

Conclusion: This study provides evidence for blood pressure management in Chinese pregnant women.

KEYWORDS:

• Pregnancy blood pressure
• reference range
• Chinese women

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary Material

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