High-Risk Pregnancy: Causes, Symptoms, Monitoring and Specialist Care

A high-risk pregnancy is a pregnancy in which the mother, baby, or both have a higher-than-usual risk of developing health complications before, during, or after delivery.

Being diagnosed with a high-risk pregnancy does not necessarily mean that complications will occur. In many cases, careful monitoring and appropriate medical care can help manage potential risks and support a healthy pregnancy.

High-risk pregnancy care may involve an obstetrician, a maternal-fetal medicine specialist, and other healthcare professionals depending on the mother’s medical history and the condition affecting the pregnancy.

In this guide, we explain what a high-risk pregnancy means, common causes and risk factors, warning signs, recommended monitoring, and when specialist care may be needed.

What Is a High-Risk Pregnancy?

A high-risk pregnancy is a pregnancy that requires closer medical attention because certain maternal, fetal, or pregnancy-related factors increase the possibility of complications.

Risk can be present before pregnancy or develop during pregnancy.

Examples include:

• Maternal medical conditions

• Previous pregnancy complications

• Multiple pregnancy

• Abnormal fetal development

• Placental problems

• Pregnancy-related complications

• Advanced maternal age

• Certain genetic or fetal conditions

The level of risk varies from one patient to another. A pregnancy may be considered high risk because of a single factor or because several factors occur together.

What Causes a High-Risk Pregnancy?

There is no single cause of high-risk pregnancy.

Risk may result from the mother’s health, the baby’s condition, pregnancy complications, or a combination of these factors.

1. Maternal Health Conditions

Some medical conditions can increase pregnancy risks.

Examples include:

• Diabetes

• High blood pressure

• Heart disease

• Kidney disease

• Thyroid disorders

• Autoimmune diseases

• Certain blood disorders

• Epilepsy and other neurological conditions

Women with chronic medical conditions should ideally discuss pregnancy planning with their healthcare team before conception.

2. Previous Pregnancy Complications

A history of pregnancy complications may increase the need for specialist monitoring in a future pregnancy.

Examples include:

• Previous preterm birth

• Previous pregnancy loss

• Previous preeclampsia

• Previous fetal growth restriction

• Previous placental complications

• Previous stillbirth

A previous complication does not mean that it will happen again, but it can help doctors identify pregnancies that may benefit from closer observation.

3. Multiple Pregnancy

Pregnancies involving twins or higher-order multiples generally require additional monitoring.

Multiple pregnancies can have a higher risk of complications such as:

• Preterm birth

• Fetal growth problems

• Preeclampsia

• Placental complications

• Differences in fetal growth

The appropriate monitoring schedule depends on the type of multiple pregnancy and other clinical factors.

4. Advanced Maternal Age

Maternal age can influence pregnancy risks.

As maternal age increases, certain pregnancy complications become more common, including some chromosomal conditions, gestational diabetes, hypertension, and other complications.

However, age alone does not determine pregnancy outcome.

Many women have healthy pregnancies with appropriate prenatal care and individualized monitoring.

5. Diabetes During Pregnancy

Diabetes that exists before pregnancy or develops during pregnancy can require additional monitoring.

Poorly controlled blood glucose can increase the risk of complications affecting both mother and baby.

Management may involve:

• Blood glucose monitoring

• Nutritional guidance

• Medication when necessary

• Fetal growth assessment

• Additional antenatal monitoring

Women with diabetes should receive individualized medical advice throughout pregnancy.

6. High Blood Pressure and Preeclampsia

High blood pressure during pregnancy can require close monitoring.

One important pregnancy-related condition is preeclampsia, which can affect multiple organs and may have consequences for both the mother and baby.

Doctors may monitor:

• Blood pressure

• Urine protein when indicated

• Blood tests

• Maternal symptoms

• Fetal growth

• Placental function

Early recognition and appropriate management are important components of high-risk pregnancy care.

7. Previous Pregnancy Loss

Women who have experienced repeated pregnancy losses may require additional evaluation and monitoring.

The causes of recurrent pregnancy loss can vary and may include genetic, anatomical, hormonal, immune, blood-clotting, or other factors.

A specialist evaluation can help determine whether additional investigations are appropriate.

8. Fetal Growth Restriction

Fetal growth restriction (FGR) occurs when a fetus is smaller than expected for its gestational age because of an u