Pre-eclampsia Explained: Causes, Symptoms, and Treatment

Pre-eclampsia is a pregnancy complication that affects both the mother and baby if not managed early. It usually appears after the 20th week of pregnancy and can lead to serious health risks if left untreated. While it may sound scary, early detection and proper management can significantly reduce complications.

What Causes Pre-eclampsia?

Pre-eclampsia is believed to begin in the placenta, where abnormal development of blood vessels limits the flow of blood. This reduced blood flow creates stress on the mother’s body, leading to high blood pressure and potential damage to organs such as the liver and kidneys.

Although the exact cause is still unclear, several risk factors increase the chance of developing pre-eclampsia:
• First-time pregnancy
• Carrying multiples (twins or more)
• Personal or family history of pre-eclampsia
• Chronic hypertension or kidney disease
• Type 1 or type 2 diabetes
• Obesity (BMI over 30)
• Maternal age over 35
• Autoimmune conditions like lupus

Knowing your risk factors allows your doctor to monitor you more closely throughout your pregnancy.

Recognising the Symptoms

Some women with pre-eclampsia feel completely fine, which is why routine check-ups are critical. However, symptoms may develop and include:

• High blood pressure: Often the first sign, defined as 140/90 mmHg or higher
• Swelling: Especially in the hands, face, or around the eyes
• Rapid weight gain: Due to fluid retention
• Severe headaches: Persistent and not relieved by usual treatments
• Vision changes: Blurry vision, light sensitivity, or seeing flashing spots
• Upper abdominal pain: Often felt under the ribs on the right side
• Nausea or vomiting: Especially in the second half of pregnancy

If you notice any of these symptoms, seek medical advice immediately. Quick action can prevent the condition from worsening.

How It Affects Mother and Baby

If untreated, pre-eclampsia can lead to severe complications for both mother and baby:

For the mother:
• Eclampsia (seizures)
• HELLP syndrome (a life-threatening liver and blood clotting disorder)
• Stroke
• Placental abruption (the placenta detaches from the uterus)
• Long-term cardiovascular risk

For the baby:
• Intrauterine growth restriction (IUGR)
• Low birth weight
• Premature birth
• Stillbirth in severe cases

These outcomes highlight the importance of prenatal care and early diagnosis.

Treatment Options and Monitoring

There is no cure for pre-eclampsia except delivery. However, management aims to keep both mother and baby healthy until delivery is safe.

For mild pre-eclampsia:
• Frequent check-ups to monitor blood pressure, urine protein, and baby’s growth
• Lifestyle adjustments such as reduced physical activity or modified bed rest
• Blood pressure medications to keep readings in a safe range

For moderate to severe pre-eclampsia:
• Hospitalisation for close monitoring
• Steroid injections to accelerate baby’s lung development if early delivery is expected
• Magnesium sulfate to prevent seizures
• Ultrasounds and fetal monitoring to check for signs of distress or poor growth

Doctors will aim to prolong the pregnancy as safely as possible, especially before 37 weeks.

When Delivery Is the Only Solution

In many cases, delivery is the safest option once pre-eclampsia progresses. Your doctor may recommend early delivery if:

• Blood pressure remains dangerously high
• Blood tests show worsening organ function
• There’s reduced amniotic fluid or slowed fetal growth
• You’re at or beyond 37 weeks of gestation

For cases diagnosed earlier than 34 weeks, doctors balance the risks of early birth against the dangers of continuing the pregnancy. If necessary, neonatal care teams are ready to support premature babies.

Early Detection and Management of Pre-Eclampsia

Pre-eclampsia is a serious but manageable pregnancy condition. The key is early detection through regular prenatal visits. Schedule a prenatal check-up with us if you’re pregnant and have any risk factors or symptoms of pre-eclampsia.

FAQs

How is pre-eclampsia diagnosed?

Pre-eclampsia is diagnosed through a combination of blood pressure measurements, urine tests to check for protein, blood tests to assess kidney and liver function, and monitoring of your baby’s growth and wellbeing. Your obstetrician may also recommend regular ultrasounds and fetal monitoring if pre-eclampsia is suspected.

Can pre-eclampsia affect future pregnancies?

Women who have had pre-eclampsia have a higher risk of developing it in future pregnancies, although many go on to have healthy pregnancies with appropriate antenatal care. Your obstetrician may recommend closer monitoring and preventive measures based on your individual risk factors.

Is pre-eclampsia the same as gestational hypertension?

No. Gestational hypertension refers to high blood pressure that develops during pregnancy without signs of organ damage. Pre-eclampsia involves high blood pressure together with complications such as protein in the urine or changes in kidney, liver, or other organ function, making it a more serious condition.