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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Obstetrics

Treatment and Management: Balancing Safety and Timing

At a Glance

The only definitive cure for preeclampsia is delivering the baby and placenta. Treatment involves balancing the baby's need to grow with the mother's safety, using blood pressure medications, and administering magnesium sulfate to prevent seizures until delivery is safe.

Managing preeclampsia is a delicate balancing act. The definitive “cure” for preeclampsia is the delivery of the baby and the placenta [1]. However, if your baby is premature, your medical team will work to “buy time” for the baby to grow, as long as it is safe for you to remain pregnant [2].

The Decision for Delivery

Your care team uses your gestational age (how many weeks pregnant you are) and the presence of severe features to decide when it is time to deliver.

Delivery Timing Guide

  • 37 Weeks or More: If you have reached “full term” (37 0/7 weeks), delivery is usually recommended regardless of how mild your symptoms are [3][4].
  • 34 to 37 Weeks: If you have severe features, your doctor will likely recommend delivery now [5]. If you do not have severe features, you may be monitored closely (“expectant management”) until you reach 37 weeks [6].
  • Less than 34 Weeks: This is the most complex stage. If you are stable and do not have severe features, the goal is to reach 34 weeks [4]. If early delivery is needed, your doctor will likely give you steroid shots (like betamethasone) to help your baby’s lungs develop faster [4]. Your baby will likely need a stay in the Neonatal Intensive Care Unit (NICU), but this early intervention is part of a carefully designed safety plan for both of you [7][8].

Magnesium Sulfate: Seizure Prevention

If you have preeclampsia with severe features, you will likely be given magnesium sulfate through an IV [2]. This is not a blood pressure medication; its job is to protect your brain and prevent seizures (eclampsia) [9].

What it feels like:
Many patients find magnesium sulfate to be the most difficult part of treatment. It commonly causes:

  • A sudden feeling of warmth or “flushing” [10].
  • Nausea or vomiting.
  • Extreme tiredness or “brain fog.”
  • Muscle weakness or soreness at the IV site.

Duration and Restrictions:
You will likely remain on the magnesium drip for up to 24 hours after delivery to protect your brain during the highest-risk postpartum period [11]. Additionally, while on magnesium, you may be placed on a strict “fluid restriction” (limiting how much water or ice chips you can have) to prevent fluid from building up in your lungs [12]. Because too much magnesium can be dangerous, nurses will check you frequently for magnesium toxicity by evaluating your reflexes and breathing rate [12].

Managing High Blood Pressure

If your blood pressure reaches 160/110 mmHg or higher, it is considered a hypertensive emergency that requires immediate treatment to prevent a stroke [13].

The most common first-line medications include:

  • Labetalol: A beta-blocker given as an IV injection or a pill. Be sure to remind your care team if you have a history of asthma, as they may choose a different medication [14][15].
  • Nifedipine: A calcium-channel blocker, usually given as a pill that releases the medication slowly over time [16].
  • Hydralazine: A medication that relaxes the blood vessels, often given through an IV for rapid results [13].

Both Labetalol and Nifedipine are standard protocols and are considered safe for your baby [17]. While these medications lower your blood pressure, they do not “fix” the underlying preeclampsia. They are tools used to keep you in a safe zone while your medical team determines the best time for your baby to be born [17].

Back to Home

Common questions in this guide

What is the cure for preeclampsia?
The only definitive cure for preeclampsia is the delivery of the baby and the placenta. Medications can help manage symptoms and lower blood pressure safely, but they do not fix the underlying condition.
When will I need to deliver my baby if I have preeclampsia?
Delivery timing depends on how far along you are in your pregnancy and the severity of your symptoms. If you reach 37 weeks, or if you develop severe features between 34 and 37 weeks, your doctor will likely recommend delivery.
Why do they give you magnesium sulfate for preeclampsia?
Magnesium sulfate is given through an IV to protect your brain and prevent seizures, a dangerous complication known as eclampsia. It is not used to lower your blood pressure.
What does being on a magnesium drip feel like?
Common side effects include a sudden feeling of warmth or flushing, extreme tiredness, brain fog, nausea, and muscle weakness. Because it makes you groggy, having a support person with you is highly recommended.
What blood pressure medications are used for preeclampsia?
Labetalol, nifedipine, and hydralazine are standard, safe medications used to lower severely high blood pressure during pregnancy. These medications protect you from stroke while your medical team plans the safest time for delivery.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Does my diagnosis include 'severe features,' and how does that change our goal for the delivery date?
  2. 2.If I am started on magnesium sulfate, what specific monitoring will the nurses be doing to check for toxicity?
  3. 3.Which blood pressure medication (labetalol or nifedipine) is best for me, considering my medical history?
  4. 4.What specific changes in my labs or symptoms would trigger a decision to deliver immediately?
  5. 5.Is my baby showing any signs of stress or growth issues that we need to factor into the timing?

Questions For You

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Related questions

Why Do You Need a Magnesium Drip for Preeclampsia?What BP Medications Are Safe During Preeclampsia?

References

References (17)
  1. 1

    Factors Associated with Progression to Preeclampsia with Severe Features in Pregnancies Complicated by Mild Hypertensive Disorders.

    Barda S, Yoeli Y, Stav N, et al.

    Journal of clinical medicine 2023; (12(22)) doi:10.3390/jcm12227022.

    PMID: 38002636
  2. 2

    Quantifying the additional maternal morbidity in women with preeclampsia with severe features in whom immediate delivery is recommended.

    Jaber S, Jauk VC, Cozzi GD, et al.

    American journal of obstetrics & gynecology MFM 2022; (4(3)):100565 doi:10.1016/j.ajogmf.2022.100565.

    PMID: 35033750
  3. 3

    Gestational Hypertension and Preeclampsia: ACOG Practice Bulletin, Number 222.

    Obstetrics and gynecology 2020; (135(6)):e237-e260 doi:10.1097/AOG.0000000000003891.

    PMID: 32443079
  4. 4

    Hypertensive Disorders of Pregnancy: Common Clinical Conundrums.

    Ohamadike O, Lim SL, Siegel A, et al.

    Obstetrical & gynecological survey 2022; (77(4)):234-244 doi:10.1097/OGX.0000000000000996.

    PMID: 35395093
  5. 5

    A Proposed Plan for Prenatal Care to Minimize Risks of COVID-19 to Patients and Providers: Focus on Hypertensive Disorders of Pregnancy.

    Barton JR, Saade GR, Sibai BM

    American journal of perinatology 2020; (37(8)):837-844 doi:10.1055/s-0040-1710538.

    PMID: 32396947
  6. 6

    Immediate delivery versus expectant monitoring for hypertensive disorders of pregnancy between 34 and 37 weeks of gestation (HYPITAT-II): an open-label, randomised controlled trial.

    Broekhuijsen K, van Baaren GJ, van Pampus MG, et al.

    Lancet (London, England) 2015; (385(9986)):2492-501.

    PMID: 25817374
  7. 7

    Hypertensive disorders in pregnancy.

    Upadya M, Rao ST

    Indian journal of anaesthesia 2018; (62(9)):675-681 doi:10.4103/ija.IJA_475_18.

    PMID: 30237592
  8. 8

    Epidemiology and prognostic factors for successful expectant management of early-onset severe features preeclampsia: A retrospective multicenter cohort study.

    Chantanavilai S, Kongwattanakul K, Komwilaisak R, et al.

    Pregnancy hypertension 2022; (30()):226-231 doi:10.1016/j.preghy.2022.11.003.

    PMID: 36403507
  9. 9

    Magnesium sulfate in preeclampsia: Broad indications, not only in neurological symptoms.

    De Oliveira L, Korkes H, Rizzo M, et al.

    Pregnancy hypertension 2024; (36()):101126 doi:10.1016/j.preghy.2024.101126.

    PMID: 38669914
  10. 10

    Abbreviated 12-Hour Postpartum Magnesium Sulphate Therapy is Equally Effective and Safer Than Standard 24-Hour Therapy in Preeclampsia With Severe Features: Results From A Randomized Controlled Trial.

    Saha PK, Sheokand S, Dhaliwal LK, et al.

    Journal of family & reproductive health 2025; (19(1)):31-36 doi:10.18502/jfrh.v19i1.18437.

    PMID: 40352917
  11. 11

    Open-labelled randomised controlled trial of 12 hours versus 24 hours modified Pritchard regimen in the management of eclampsia and pre-eclampsia in Ghana (MOPEP Study): study protocol.

    Beyuo T, Lawrence E, Langen ES, Oppong SA

    BMJ open 2019; (9(10)):e032799 doi:10.1136/bmjopen-2019-032799.

    PMID: 31641005
  12. 12

    Management of hyponatraemia in pre-eclampsia with severe features.

    Whitley J, Swartz S, Martinez A

    BMJ case reports 2021; (14(8)) doi:10.1136/bcr-2021-244688.

    PMID: 34404669
  13. 13

    Hypertensive Disorders of Pregnancy.

    Khedagi AM, Bello NA

    Cardiology clinics 2021; (39(1)):77-90 doi:10.1016/j.ccl.2020.09.005.

    PMID: 33222817
  14. 14

    Oral nifedipine vs. intravenous labetalol for treatment of pregnancy-induced severe pre-eclampsia.

    Shi DD, Yang FZ, Zhou L, Wang N

    Journal of clinical pharmacy and therapeutics 2016; (41(6)):657-661 doi:10.1111/jcpt.12439.

    PMID: 27578562
  15. 15

    Guideline No. 426: Hypertensive Disorders of Pregnancy: Diagnosis, Prediction, Prevention, and Management.

    Magee LA, Smith GN, Bloch C, et al.

    Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC 2022; (44(5)):547-571.e1 doi:10.1016/j.jogc.2022.03.002.

    PMID: 35577426
  16. 16

    Prediction of adverse maternal outcomes from pre-eclampsia and other hypertensive disorders of pregnancy: A systematic review.

    Ukah UV, De Silva DA, Payne B, et al.

    Pregnancy hypertension 2018; (11()):115-123 doi:10.1016/j.preghy.2017.11.006.

    PMID: 29198742
  17. 17

    Hypertensive Disorders of Pregnancy: Diagnosis, Management and Timing of Birth.

    İnan C, Uygur L, Alpay V, et al.

    Balkan medical journal 2024; (41(5)):333-347 doi:10.4274/balkanmedj.galenos.2024.2024-7-108.

    PMID: 39239931

This page provides educational information about preeclampsia treatment and management. It does not replace professional medical advice from your obstetrician or maternal-fetal medicine specialist regarding your specific pregnancy.

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