{
  "release_id": "15708f235d73cd42",
  "id": "maternal:chronic-hypertension-in-pregnancy",
  "owner": "maternal",
  "kind": "condition",
  "slug": "chronic-hypertension-in-pregnancy",
  "name": "Chronic hypertension in pregnancy",
  "aliases": [
    "Chronic hypertension"
  ],
  "atlases": [
    "maternal"
  ],
  "summary_plain": "High blood pressure that a woman already has when she becomes pregnant, or that is found in the first 20 weeks. It is a form of high blood pressure, but decisions in pregnancy differ: some blood pressure medicines are not advised, and whether to treat mildly raised pressure has been debated.",
  "summary_technical": "Pre-existing or early-pregnancy hypertension. NICE NG133 (terms used): high blood pressure that is found at the first antenatal (booking) appointment or before 20 weeks, or that a woman is already on medicine for when she is referred to maternity care; it can be primary or secondary. NG133 treats a systolic pressure of 140 mmHg or more, or a diastolic pressure of 90 mmHg or more, as hypertension. The CHAP trial used its own entry definition, given on the CHAP trial page, which is close to NICE’s but not identical. NG133 advises stopping ACE inhibitors or ARBs if a woman becomes pregnant. CHAP’s authors describe treatment of mild chronic hypertension in pregnancy as controversial before the trial. Pre-eclampsia can develop in women who have chronic hypertension (NG133 1.3.12). The recipient is the pregnant woman; effects on the fetus or newborn sit in claims with their own contexts.",
  "editorial_state": "draft",
  "last_substantive_edit": "2026-10-11",
  "last_evidence_check": null,
  "next_review_due": null,
  "external_ids": [],
  "navigation": {
    "maternal": {
      "life-stage": [
        "preconception",
        "pregnancy",
        "postpartum"
      ]
    }
  },
  "payload": {
    "taxonomy_codes": [],
    "recognition": null,
    "assessment": null,
    "burden_claims": []
  },
  "content_digest": "d6df99cc44c48ed4728683b223ce117a35b759535e952de94c8f6e9dfd35f292",
  "review": {
    "content_digest": "d6df99cc44c48ed4728683b223ce117a35b759535e952de94c8f6e9dfd35f292",
    "current": [],
    "conflicting": [],
    "stale": [],
    "inactive": []
  },
  "claims": [],
  "decisions": [],
  "relationships": {
    "outgoing": [
      {
        "predicate": "subtype_of",
        "label": "One of the three groups NICE lists under hypertensive disorders of pregnancy",
        "clinical_claim_not_fact": false,
        "other_entity_id": "maternal:hypertensive-disorders-of-pregnancy",
        "other_entity_in_atlas": true,
        "claim_id": null
      },
      {
        "predicate": "related_to",
        "label": "Hypertension that is present before or early in pregnancy",
        "clinical_claim_not_fact": false,
        "other_entity_id": "core:hypertension",
        "other_entity_in_atlas": true,
        "claim_id": null
      }
    ],
    "incoming": [
      {
        "predicate": "related_to",
        "label": "Related to",
        "clinical_claim_not_fact": false,
        "other_entity_id": "maternal:preeclampsia",
        "other_entity_in_atlas": true,
        "claim_id": null
      },
      {
        "predicate": "evaluated_for",
        "label": "Evaluated for this",
        "clinical_claim_not_fact": true,
        "other_entity_id": "maternal:antihypertensive-treatment-non-severe-hypertension-pregnancy",
        "other_entity_in_atlas": true,
        "claim_id": "maternal:claim-chap-primary-composite"
      },
      {
        "predicate": "investigates",
        "label": "Investigated in",
        "clinical_claim_not_fact": false,
        "other_entity_id": "maternal:chap-trial",
        "other_entity_in_atlas": true,
        "claim_id": null
      }
    ]
  },
  "page_path": "conditions/chronic-hypertension-in-pregnancy/",
  "context_path": "api/v1/context/maternal--chronic-hypertension-in-pregnancy.md"
}