Preeclampsia in Pregnancy: High BP, Warning Signs and Care

• Preeclampsia is new high blood pressure (140/90 or higher) after 20 weeks, plus protein in the urine or signs of organ strain.
• It can be silent — that is why BP and a urine dipstick are checked at every antenatal visit, even when you feel completely well.
• Go to hospital now for a severe headache, vision changes, upper-belly pain under the right ribs, sudden facial or hand swelling, reduced baby movements, or any seizure.
• For high-risk women, low-dose aspirin started before 16 weeks roughly halves the risk of early preeclampsia, and calcium helps where intake is low.
• Delivery is the only definitive cure, but BP can stay high or rise in the first 1 to 2 weeks after birth — keep watching for warning signs postpartum.
• Having had preeclampsia raises lifelong heart and blood-pressure risk, so it belongs in your permanent medical record and your future health checks.

Preeclampsia is defined as new-onset high blood pressure after 20 weeks of pregnancy — systolic 140 mmHg or higher, or diastolic 90 mmHg or higher — together with either protein in the urine or signs that another organ is being affected. Before 20 weeks, high BP is usually chronic (pre-existing) hypertension, not preeclampsia.

The condition starts in the placenta. When the placenta does not implant deeply or its blood vessels do not remodel properly in early pregnancy, it releases signals that make the mother's blood vessels tighten and leak. The result is rising BP, protein leaking into the urine, and gradual strain on the brain, liver, kidneys and clotting system.

Mild preeclampsia is usually managed with close monitoring and timed delivery at or near term. Severe preeclampsia — BP at 160/110 or higher, or signs of organ damage — needs hospital admission and urgent treatment. Eclampsia is preeclampsia with seizures and is a life-threatening emergency.

Because some of the early changes are silent, your antenatal visits do the watching for you — every BP reading and urine dipstick is part of catching this before it becomes serious.

Hypertensive disorders of pregnancy are among the leading causes of maternal death in India, alongside haemorrhage and sepsis. Most of these deaths are preventable when BP is checked at every antenatal visit and warning signs are treated as emergencies rather than anxieties.

Late antenatal booking — a first visit after 20 weeks — is one of the biggest reasons preeclampsia is caught late. Many women across rural and semi-urban India still book only after the baby starts moving, by which time the early window for aspirin prevention has closed.

Access to magnesium sulphate, the cornerstone drug that prevents seizures in severe preeclampsia, has improved through government programmes, but ICU beds for severe cases still vary sharply by city and district. Knowing where the nearest facility with an obstetric ICU and blood-bank support is, before the third trimester, is part of safe planning.

If you have anaemia, a low haemoglobin in pregnancy on top of preeclampsia narrows your safety margin if heavy bleeding occurs at delivery — another reason both deserve attention early.

• First pregnancy — the immune-system encounter with placental tissue is new, and the risk is roughly two to three times higher than in later pregnancies.
• Maternal age above 35, and to a lesser extent below 18.
• Pre-pregnancy obesity (BMI 30 or higher) or significant weight gain before conception — see obesity and pregnancy for how weight changes the whole care plan.
• Family history of preeclampsia in your mother or sister.
• Chronic hypertension, type 1 or type 2 diabetes, kidney disease, or autoimmune conditions like lupus or antiphospholipid syndrome.
• Prior preeclampsia — risk in the next pregnancy is around one in five, and higher if the earlier episode was severe.
• Multiple pregnancy — twins or triplets roughly triple the risk.
• Conception through IVF or other assisted reproductive techniques.
• A long gap between pregnancies (over 10 years), and a new partner for a subsequent pregnancy.

• A severe headache that does not settle with paracetamol and water — especially with a high BP reading at home. This differs from the more common, milder pregnancy headaches.
• Vision changes — blurry vision, flashing lights, spots, sensitivity to light, or temporary loss of part of your visual field.
• Severe pain in the upper abdomen, especially under the right ribs — this is the liver, not indigestion.
• Sudden swelling of the face, around the eyes or in the hands — distinct from the gradual ankle swelling that is usually normal pregnancy edema.
• A clear drop in your baby's movements compared with the usual daily pattern.
• Difficulty breathing, chest tightness, or a feeling that you cannot lie flat.
• New, severe vomiting in the third trimester, especially alongside any of the above.
• A seizure — call an ambulance immediately and lay the person on their side.

Diagnosis begins with a properly measured blood pressure, taken seated and rested, on the correct cuff size, and in both arms at the first visit. A single high reading is repeated after a short rest — preeclampsia is confirmed when two readings at least 4 hours apart are both 140/90 or higher after 20 weeks (a single reading of 160/110 or more is treated urgently without waiting).

Urine is checked at every visit with a dipstick for protein. A reading of 1+ or more is followed up with a spot urine protein-creatinine ratio or a 24-hour urine collection. Significant proteinuria is 300 mg or more in 24 hours, or a protein-creatinine ratio of 0.3 or higher.

Blood tests for severity include a full blood count (looking at platelets), liver enzymes (AST, ALT, LDH), kidney function (urea, creatinine), uric acid, and a coagulation screen if HELLP is suspected. Falling platelets, rising liver enzymes or rising creatinine move the diagnosis from mild to severe.

Fetal assessment includes an ultrasound for growth, amniotic fluid volume and umbilical artery Doppler. For what each number on these reports means, see understanding scans, labs and reports — and because preeclampsia can slow a baby's growth, it overlaps closely with intrauterine growth restriction.

For women at high risk, low-dose aspirin between 75 and 150 mg once daily, started ideally between 12 and 16 weeks of pregnancy and continued until around 36 weeks, reduces the risk of early preeclampsia substantially. This is supported by ACOG, NICE and FOGSI guidance.

High risk is defined as one major factor — prior preeclampsia, chronic hypertension, type 1 or 2 diabetes, kidney disease, or autoimmune disease — or two or more moderate factors such as a first pregnancy, age over 35, BMI 30 or above, family history, or a twin pregnancy.

Calcium supplementation of 1.5 to 2 grams a day is recommended where dietary calcium is low, which is common across many Indian diets. It lowers preeclampsia risk in low-intake populations and complements existing iron and folic-acid supplementation.

Aspirin should only be started after discussing your history with your obstetrician. Even at this small dose, it is not a self-prescription drug in pregnancy.

Delivery is the only definitive cure, but blood pressure does not always normalise the day the baby is born. BP can stay high or even rise for the first one to two weeks after delivery, and postpartum preeclampsia or eclampsia can occur even in women who had completely normal pregnancies.

Most units check BP at days 1, 3 to 5, and again at 1 to 2 weeks postpartum, then at the 6-week postnatal visit. If BP is still high at six weeks, you need referral to a physician — at that point it is no longer pregnancy hypertension.

Warning symptoms still count after birth. A severe headache, vision changes, upper-abdominal pain or a seizure in the first six weeks after delivery means going back to hospital, even if you felt fine on discharge day. Postpartum preeclampsia is also one cause to keep in mind alongside postpartum bleeding warning signs when something feels wrong in the early weeks.

Breastfeeding is safe with most antihypertensive medicines used after delivery — labetalol, nifedipine, enalapril and methyldopa among them. Do not stop any BP medication on your own; check with your obstetrician first. For the wider picture of recovery, see what happens after delivery.

Women who have had preeclampsia carry a two to four times higher lifetime risk of high blood pressure, heart disease and stroke than women whose pregnancies were uncomplicated. The risk is highest after early-onset or severe preeclampsia.

This makes annual blood pressure checks, a lipid profile and a fasting blood sugar — from around five years postpartum, earlier if you have other risk factors — a standard part of follow-up rather than optional. Diet, weight, exercise and not smoking matter more here than in the average population, and recognising heart disease symptoms in women early becomes part of long-term self-care.

If a diagnosis of preeclampsia was given but never discussed in detail, ask your gynaecologist or family physician to record it clearly in your medical history. Future pregnancies and future cardiovascular screening both depend on this single line being written down.

If you also had gestational diabetes alongside preeclampsia, the cardiovascular and type 2 diabetes risks compound — so both need long-term tracking, not just one.

Janani Suraksha Yojana (JSY) provides cash support for institutional delivery in government facilities and is particularly important for women below the poverty line — this matters because severe preeclampsia almost always needs an institutional delivery with IV access, magnesium sulphate and neonatal support, sometimes including preterm birth and NICU care when the baby must be delivered early.

Pradhan Mantri Surakshit Matritva Abhiyan (PMSMA) offers a free comprehensive antenatal check on the 9th of every month at participating government health facilities. For women in rural areas without easy private-doctor access, this is often the most reliable BP and urine check available — and the place where preeclampsia is most often caught early.

A balanced Indian pregnancy diet supports overall maternal health, but it does not by itself prevent preeclampsia. Iron, folic acid, calcium and protein all matter; salt restriction alone does not meaningfully change preeclampsia risk.

If you feel your BP readings or warning signs are being brushed aside — "this is normal in pregnancy, don't worry" — push for a written reading and a urine check, and seek a second opinion. Body literacy and persistence save lives here; see when doctors don't listen for practical scripts when you feel dismissed.

Make every routine antenatal visit, because BP and urine are checked there even when you feel well. Book the same day — not at your next scheduled visit — if a home BP reading is 140/90 or higher, or if you notice new swelling of the face or hands.

Go to a hospital with obstetric services immediately (not a small clinic) for any of the red flags above: a severe headache, vision changes, upper-belly pain under the right ribs, breathlessness, a clear drop in baby's movements, or a single very high reading of 160/110 or more.

Call an ambulance for a seizure, and lay the person on their side while you wait. These rules apply in the first six weeks after delivery too, even if your pregnancy was uneventful.

Preeclampsia is one of the few pregnancy complications where catching the early signs changes outcomes dramatically. A BP cuff at home from 20 weeks onwards, a urine dipstick at every antenatal visit, and a clear list of warning symptoms on the fridge can turn a potential emergency into a planned hospital admission.

If you are in a higher-risk group, ask about aspirin before 16 weeks. If you ever feel unwell with the warning signs above, go to a hospital with obstetric services and ask for BP, urine and bloods.

Preeclampsia is serious, but it is also one of the most studied and most treatable parts of pregnancy care. A short admission, the right medicines and timely delivery bring the vast majority of mothers and babies through safely.

• ACOG — Gestational Hypertension and Preeclampsia (Practice Bulletin)
• WHO — Recommendations for Prevention and Treatment of Pre-eclampsia and Eclampsia
• NICE — Hypertension in Pregnancy: Diagnosis and Management (NG133)
• NHS — Pre-eclampsia
• FOGSI — Good Clinical Practice Recommendations on Pre-eclampsia and Eclampsia