The only definitive treatment for preeclampsia is delivering the baby. Every other intervention is about managing blood pressure, preventing seizures, and buying time for the pregnancy to continue safely when delivery is too early. How aggressively your care team acts depends on how far along you are, how severe the condition is, and whether you or the baby show signs of distress.
How Preeclampsia Is Diagnosed
Preeclampsia is defined by new high blood pressure (140/90 mmHg or higher) combined with protein in the urine (0.3 grams or more over 24 hours) developing after 20 weeks of pregnancy. Some cases are diagnosed even without significant protein in the urine if other warning signs are present, such as low platelet counts, elevated liver enzymes, kidney problems, fluid in the lungs, or new severe headaches and vision changes.
The condition ranges from mild to severe. Severe features include blood pressure reaching 160/110 or higher on two readings taken at least 15 minutes apart, persistent headache, upper abdominal pain, vision disturbances, or abnormal blood work. The distinction between preeclampsia with and without severe features drives nearly every treatment decision.
Managing Blood Pressure
Lowering blood pressure is the most immediate priority because dangerously high readings increase the risk of stroke, placental abruption, and organ damage. Two medications are used most often during pregnancy: labetalol, a blood pressure drug that slows the heart rate and relaxes blood vessels, and nifedipine, a calcium channel blocker that widens arteries. The American College of Obstetricians and Gynecologists (ACOG) recommends nifedipine as a first-line option when IV access isn’t available, with labetalol as an alternative.
If you’re hospitalized, you may receive these medications through an IV for faster control. Your care team will check your blood pressure frequently, sometimes every 15 to 30 minutes during acute episodes, and adjust doses until readings come down to a safer range. The goal isn’t to normalize blood pressure completely but to keep it below levels that threaten organ damage while maintaining enough blood flow to the placenta.
Preventing Seizures With Magnesium Sulfate
When preeclampsia progresses to its most dangerous form, it can trigger seizures, a condition called eclampsia. Magnesium sulfate is the standard treatment to prevent this. It’s given through an IV, typically as an initial dose followed by a continuous low-level infusion. You’ll likely receive it during labor and for 24 to 48 hours after delivery.
Magnesium sulfate requires close monitoring because too much can be dangerous. Your care team will regularly check your reflexes (particularly your knee reflexes), breathing rate, and urine output. Loss of reflexes is an early sign that magnesium levels are climbing too high. Respiratory slowing is a more serious warning. You may feel flushed, warm, or slightly nauseous while on the infusion, which are common and expected side effects.
When Delivery Is the Right Call
Timing delivery is the central decision in preeclampsia treatment, and it hinges on gestational age and severity. ACOG’s current recommendations break down as follows:
- Preeclampsia without severe features: delivery at 37 weeks, or at the time of diagnosis if you’re already past that point.
- Preeclampsia with severe features, mother and baby stable: delivery at 34 weeks, or at diagnosis if later.
- Preeclampsia with severe features, unstable: delivery after stabilization regardless of gestational age, even if the baby is very premature.
In practice, these timelines mean that if you’re diagnosed at, say, 30 weeks with severe features but both you and the baby are stable, your team will try to continue the pregnancy under close hospital monitoring until 34 weeks. If you’re diagnosed at 36 weeks without severe features, you’ll likely be monitored as an outpatient until 37 weeks. If things deteriorate at any point, the plan shifts to immediate delivery.
Helping the Baby’s Lungs Before Early Delivery
When preeclampsia forces delivery before 37 weeks, corticosteroid injections are given to speed up fetal lung development. A single course is recommended for pregnancies between 24 and 34 weeks when delivery within the next seven days is likely. Between 34 and 37 weeks, a course is also recommended if you haven’t received one previously. The steroids are given as two injections, usually 24 hours apart, and they significantly reduce the baby’s risk of breathing problems, brain bleeds, and other complications of prematurity.
If more than 14 days have passed since your first course and you’re still under 34 weeks with delivery again appearing imminent, a single repeat course may be considered. The benefit is greatest when delivery happens between 24 hours and 7 days after the injections, which is why your team will try to time them carefully.
Monitoring During Hospital Stays
If you’re admitted with preeclampsia before your delivery date, expect frequent blood pressure checks, regular blood draws to track your platelet count and liver enzymes, and daily urine monitoring. Your baby will be monitored too, typically with non-stress tests that track the heart rate and movement, and sometimes with ultrasound assessments of amniotic fluid levels and blood flow through the umbilical cord.
The blood work matters because preeclampsia can progress to HELLP syndrome, a serious complication involving the breakdown of red blood cells, elevated liver enzymes, and dangerously low platelets. HELLP can develop rapidly, sometimes within hours, which is why lab work is repeated so often. Symptoms to watch for include pain under your right ribs, nausea, and general feeling of being very unwell. HELLP typically requires prompt delivery.
Recovery and Monitoring After Delivery
Preeclampsia doesn’t always resolve the moment the baby is born. Blood pressure often peaks between 3 and 7 days after delivery, which is also when the risk of postpartum stroke is highest. ACOG recommends a blood pressure check within 72 hours of delivery and again within 10 days. Many hospitals now send patients home with a blood pressure cuff and instructions to check readings daily or twice daily during the first week.
Blood pressure related to preeclampsia should fully resolve by 12 weeks postpartum. If it hasn’t, you may be developing chronic hypertension, which requires ongoing management. In the meantime, your doctor may keep you on blood pressure medication after delivery. The treatment threshold is typically a reading of 150/100 or higher in the postpartum period, with readings of 160/110 or above treated as a medical emergency for up to six weeks after birth.
Watch for symptoms of postpartum preeclampsia even after you’ve been discharged: persistent headache, severe abdominal pain, shortness of breath, or vision changes. These can appear for the first time days after delivery in people who had no preeclampsia during pregnancy itself.
Reducing Your Risk With Low-Dose Aspirin
For people at high risk of developing preeclampsia, daily low-dose aspirin (81 mg) starting after 12 weeks of pregnancy can meaningfully reduce the chances. The U.S. Preventive Services Task Force and ACOG both recommend this approach. The earlier it’s started, the better it works, with the optimal window being before 16 weeks of gestation. You’d continue taking it daily until delivery.
High-risk factors include a previous pregnancy with preeclampsia, carrying multiples, chronic hypertension, diabetes, kidney disease, or autoimmune conditions. If you have one or more of these, aspirin prophylaxis is one of the few proven tools to lower your risk. It doesn’t eliminate the possibility of preeclampsia, but it reduces it substantially enough that major medical organizations endorse it as routine prevention.
Long-Term Health After Preeclampsia
Having preeclampsia raises your lifetime risk of developing chronic high blood pressure and cardiovascular disease. This doesn’t mean heart problems are inevitable, but it does mean your blood pressure deserves attention well beyond the postpartum period. Current guidelines recommend at least annual blood pressure checks for anyone who had a hypertensive disorder during pregnancy, continuing indefinitely. Staying physically active, maintaining a healthy weight, and managing other cardiovascular risk factors all help offset this increased risk over time.