The only cure for preeclampsia is delivering the baby. Every other treatment, from blood pressure medications to seizure prevention, is aimed at keeping the mother and baby stable long enough to reach a safe point for delivery. How aggressively your care team pursues delivery depends on how far along you are, how severe your symptoms are, and whether your organs are showing signs of stress.
How Preeclampsia Is Diagnosed
Preeclampsia is diagnosed when blood pressure reaches 140/90 mmHg or higher on two separate readings taken at least four hours apart, after 20 weeks of pregnancy, in someone who previously had normal blood pressure. It’s confirmed alongside signs of organ involvement, most commonly protein in the urine (measured by a protein-to-creatinine ratio of 0.3 or higher).
Once diagnosed, the condition is classified as either preeclampsia without severe features or preeclampsia with severe features. That distinction drives every treatment decision that follows.
What Counts as “Severe Features”
Severe preeclampsia is defined by specific thresholds. Blood pressure of 160/110 mmHg or higher on two readings four hours apart is one of the clearest markers. Other signs include a drop in platelet count, abnormal liver function, fluid in the lungs, a new headache that doesn’t respond to medication, and visual disturbances like blurring or seeing spots.
If any of these signs appear, the management approach shifts significantly. The window for watchful waiting narrows, and the conversation about delivery timing becomes urgent.
Managing Preeclampsia Without Severe Features
When preeclampsia is mild and you’re before 37 weeks, the goal is to buy time for the baby to mature while keeping close watch for any escalation. This is called expectant management. You’ll have frequent blood pressure checks, blood work to monitor your liver and kidneys, and fetal monitoring to make sure the baby is tolerating the situation.
Some of this monitoring can happen on an outpatient basis, but it requires reliable follow-up. You’ll typically be seen at least twice a week, sometimes more. If the condition stays stable and doesn’t develop severe features, delivery is generally recommended at 37 weeks. There’s no benefit to waiting longer, and the risks of the disease worsening increase with time.
When Delivery Can’t Wait
Several situations push the timeline forward regardless of gestational age. These include blood pressure that won’t respond to medication, persistent severe headache or upper-right abdominal pain, visual changes, signs of kidney deterioration, fluid in the lungs, seizures (eclampsia), placental abruption, or a dangerous complication called HELLP syndrome, which involves the breakdown of red blood cells, elevated liver enzymes, and low platelets.
In these cases, stabilizing the mother takes priority. Delivery may be by induction or cesarean section depending on the clinical situation. If the baby is very premature, the care team will weigh the risks of continued pregnancy against the risks of early delivery, but maternal safety comes first.
Protecting the Baby’s Lungs Before Early Delivery
When preeclampsia forces delivery before the baby’s lungs are fully mature, a course of corticosteroids can help speed up lung development. This is recommended for pregnancies between 24 and 34 weeks when delivery is expected within seven days. A single course may also be considered between 34 and 37 weeks if no previous course was given.
One important caveat: when preeclampsia has severe features and delivery is needed in the late preterm period (34 to 37 weeks), the delivery should not be delayed just to complete a steroid course. The mother’s condition takes priority.
Lowering Blood Pressure
Blood pressure medications in preeclampsia aren’t meant to cure the disease. They’re used to prevent dangerous spikes that could cause a stroke or other organ damage. Treatment is typically started when blood pressure hits the severe range of 160/110 mmHg or higher.
The medications used work quickly and are given in escalating doses until blood pressure comes down to a safer range. If you have IV access, medications are given through the line. If not, oral options are available. The goal isn’t to normalize blood pressure completely but to bring it below the danger zone while maintaining blood flow to the placenta.
Preventing Seizures
Seizures are one of the most dangerous complications of preeclampsia, and magnesium sulfate is the standard medication used to prevent them. It’s recommended for anyone with severe features and is given through an IV, starting with a larger initial dose followed by a continuous lower dose that continues until 24 hours after delivery.
While receiving magnesium sulfate, you’ll be monitored every four hours. The care team checks your reflexes, breathing rate, urine output, and blood pressure to watch for signs that magnesium levels are getting too high. The most common early sign of excess is the loss of knee-jerk reflexes, which is uncommon and reversible when caught promptly.
HELLP Syndrome
HELLP syndrome is a severe progression of preeclampsia that affects the blood and liver. It can develop rapidly, sometimes even before high blood pressure is detected. The hallmark is a sharp drop in platelets, rising liver enzymes, and the destruction of red blood cells.
Delivery is the primary treatment. Corticosteroids have been studied as a way to improve platelet counts in HELLP, and they do appear to help on that front, but a Cochrane review found no clear evidence that steroids reduce the risk of death or serious complications overall. They may be used when a faster platelet recovery is clinically important, such as before a procedure, but they’re not a routine part of HELLP management.
Prevention With Low-Dose Aspirin
If you’re at high risk for preeclampsia based on your medical history, a daily low-dose aspirin (81 mg) can reduce your chances of developing it. The American College of Obstetricians and Gynecologists recommends starting between 12 and 28 weeks, ideally before 16 weeks, and continuing daily until delivery. Risk factors include a history of preeclampsia, chronic high blood pressure, diabetes, kidney disease, and carrying multiples.
Aspirin isn’t a guarantee. It lowers the risk but doesn’t eliminate it. If you have risk factors, it’s worth discussing early in pregnancy rather than waiting for symptoms to appear.
What Happens After Delivery
Preeclampsia doesn’t always resolve the moment the baby is born. Blood pressure can remain elevated or even spike for the first time in the days and weeks after delivery. Across major hospital systems in the U.S., the standard monitoring period is six weeks postpartum, with daily blood pressure checks at home.
You’ll be discharged with instructions on warning signs to watch for: any blood pressure reading above 160/110 mmHg, persistent headaches, visual changes, or upper abdominal pain. These symptoms after delivery warrant immediate contact with your hospital, as late-onset postpartum preeclampsia can develop even in people who had no issues during pregnancy. If severe-range blood pressure or neurological symptoms appear after discharge, readmission for closer monitoring and treatment is standard.
Some people need to continue blood pressure medication for weeks or months after delivery. For most, blood pressure gradually returns to normal, but the timeline varies. Having had preeclampsia also increases your long-term cardiovascular risk, making regular blood pressure monitoring a worthwhile habit well beyond the postpartum period.