This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: Blood pressures by gestational age underlying this work can be found at: Other relevant data are within the manuscript and supporting information files.įunding: This study was supported by the Bill & Melinda Gates Foundation (SK, ) and the NIHR Biomedical Research Centre, Oxford (PW, ). Received: DecemAccepted: ApPublished: April 27, 2021Ĭopyright: © 2021 Green et al. PLoS Med 18(4):Īcademic Editor: Lars Åke Persson, London School of Hygiene and Tropical Medicine, UNITED KINGDOM (2021) International gestational age-specific centiles for blood pressure in pregnancy from the INTERGROWTH-21st Project in 8 countries: A longitudinal cohort study.

The study’s main limitations were the unavailability of prepregnancy blood pressure values and inability to explore circadian effects because time of day was not recorded for the blood pressure measurements.Ĭitation: Green LJ, Kennedy SH, Mackillop L, Gerry S, Purwar M, Staines Urias E, et al. Fewer than 10% of women increased their systolic blood pressure by >24 mmHg or diastolic blood pressure by >18 mmHg at any gestational age. We measured blood pressure using standardised methodology and validated equipment at enrolment at 14 mmHg or diastolic blood pressure by >11 mmHg in fewer than 10% of women at any gestational age.

We enrolled healthy women at low risk of pregnancy complications. Secondary analysis of a prospective, longitudinal, observational cohort study (2009 to 2016) was conducted across 8 diverse urban areas in Brazil, China, India, Italy, Kenya, Oman, the United Kingdom, and the United States of America.

Blood pressure chart pregnancy