# Pre-eclampsia with severe features (CHAP definition)

Outcome · id `maternal:outcome-chap-preeclampsia-with-severe-features` · Maternal & Newborn Atlas · release `15708f235d73cd42` (public)

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## In plain language

Whether the mother developed pre-eclampsia with severe features, up to 2 weeks after the birth. It is one of the four parts of the CHAP primary combined outcome.

## Technical summary

One of the four components of maternal:outcome-chap-primary-composite, worded as the CHAP paper's Methods words it. Pre-eclampsia was defined by ACOG criteria. The paper adds that a blood pressure of 160/100 mm Hg or greater, with no signs or symptoms of pre-eclampsia, no proteinuria and no laboratory abnormalities, was not enough to diagnose pre-eclampsia with severe features. This outcome is narrower than maternal:outcome-chap-any-preeclampsia, which also counts pre-eclampsia without severe features. The two overlap, so they must not be added together. The recipient is the mother.

## Provenance

Content hash: dee6feffa651a9b3a51e1d8f62e999d7a0ad080e804bf26bea748fcfd366e4a5
Last substantive edit: 2026-10-12
Evidence last checked: Not recorded