What it is
Gestational hypertension means blood pressure ≥140/90 on two occasions at least 4 hours apart, developing after 20 weeks in someone with previously normal blood pressure, without proteinuria or the severe features that define preeclampsia. About 15–25% of people with gestational hypertension go on to develop preeclampsia, so surveillance is the standard.
Evidence review links
Each link opens the full review on the publisher's site in a new tab.
Possible benefits
- Detected early with routine BP checks and treatable before it progressesReview sources ↓
- Home BP monitoring gives you a running picture between visitsReview sources ↓
Possible risks
- Can progress to preeclampsia, HELLP, or preterm birthReview sources ↓
- Untreated severe-range BP (≥160/110) is a stroke riskReview sources ↓
Alternatives
- Home BP cuff twice daily; log readings for your teamReview sources ↓
- Weekly or twice-weekly prenatal visits; NSTs and growth scans depending on severityReview sources ↓
- Antihypertensive medication if BP stays elevated (labetalol, nifedipine)Review sources ↓
Current evidence
ACOG Practice Bulletin 222 (Gestational Hypertension and Preeclampsia) and the CHAP trial (2022, NEJM) support treating mild chronic and gestational hypertension to a BP target below 140/90 to reduce adverse outcomes.
Where the evidence is clear · where people may choose differently
For most topics, guidelines from ACOG, WHO, and other major bodies broadly agree on the core safety points (when to act in an emergency, informed-consent standards, monitoring baselines). Where reasonable people — and even guidelines — differ tends to be around thresholds (when to start or stop something), preferences (comfort, environment, support), and values (how you weigh small risks against benefits). Use the questions below to explore those pieces with your care team.
Educational only. Your care team can help you weigh what applies to your specific situation.
Related evidence topics
- Preeclampsia (High Blood Pressure + Protein in Urine)A pregnancy-related condition where blood pressure rises after 20 weeks, often with protein in the urine or other signs of organ strain.
- High Blood Pressure in PregnancyElevated blood pressure that existed before pregnancy (chronic), appeared after 20 weeks without other findings (gestational), or is part of preeclampsia.
- Postpartum Recovery Safety — When to CallA focused safety card for the four postpartum symptoms most likely to signal something serious: heavy bleeding, fever, severe headache or vision changes, and worsening pain.
Questions to ask your care team
- ?What BP range should prompt a call vs. going to L&D?
- ?How often do we recheck labs and do growth scans?
- ?At what gestational age would we plan delivery if BP stays controlled?
- ?Am I a candidate for antihypertensive medication?
Universal questions (works for any decision)
A short BRAIN-style set you can bring to any conversation about interventions, monitoring, or care decisions.
- ?Why are you recommending this now — is it urgent, routine, or optional?
- ?What happens if we wait an hour (or longer) before deciding?
- ?What signs would tell us this is working — or that we need to change course?
- ?What are the alternatives, including doing nothing?
- ?What would you recommend if this were your family?
- ?What would change your recommendation?
Sources & provenance
Tap a source to open the original guideline or review in a new tab.
- ACOG Practice Bulletin 222: Gestational Hypertension and Preeclampsia — ACOG
- Treatment for Mild Chronic Hypertension during Pregnancy (CHAP trial) — NEJM
Plain-language paraphrase. Re-verify before publish.
Last reviewed: 2026-07-03
Further reading — canonical references
Read the source material directly. Each link opens the publisher's own current guidance in a new tab — cross-check what we summarize against what they say.
Tier 1 · Clinical guidelines
Tier 2 · Systematic reviews
Educational only. Guidelines evolve — the linked publisher pages will reflect newer guidance than any static snapshot.
Version history — v1.0.0
v1.0.0 · 2026-07-03 · LlaMamma editors
Initial gestational hypertension topic.
New guidance from ACOG, WHO, Evidence Based Birth, or other listed sources is recorded here and can be updated remotely without a new app release.