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Pregnancy and Women with Congenital Heart Disease

Pregnancy and Women with Congenital Heart Disease - What it is

Congenital heart disease refers to heart defects that exist since birth. The incidence of congenital heart disease in Singapore is 0.8 per cent of total live births. Improvements in the modern medicine in the past decades have increased the survival of patients with congenital heart disease. As such, although women with congenital heart disease will have a higher risk of developing complications during pregnancy and delivery, most can still have a successful pregnancy, as long as there are careful planning and discussion.

Pregnancy and Women with Congenital Heart Disease - Symptoms

Pregnancy and Women with Congenital Heart Disease - How to prevent?

Planning pregnancy

Please consult with your cardiologist if you are considering pregnancy. Your cardiologist understands your heart condition(s) and will explain the effect of pregnancy on your health.

Ideally, pregnancy should be planned before conception. An echocardiogram (ultrasound of the heart) or other tests may be performed to assess if your heart will be able to cope with the extra demand during pregnancy. Your cardiologist will then advise you on the risk and whether pregnancy is safe for you. For some heart conditions, your cardiologist may discuss the timing for surgery to improve your heart function before pregnancy.

Healthy lifestyle habits

It is important for any woman thinking of becoming pregnant to start observing a healthy lifestyle which includes healthy eating habits, no smoking, avoiding excessive intake of alcohol and doing exercise.

Pregnancy and Women with Congenital Heart Disease - Causes and Risk Factors

During pregnancy

There will be increased demand on your heart during pregnancy. You should visit your obstetrician and cardiologist early, at about six to seven weeks of pregnancy. They will plan your check-ups and scans depending on your heart condition(s). Your cardiologist will ask for symptoms of shortness of breath, irregular heartbeat and exercise tolerance (when climbing the stairs or walking at a normal pace). Your blood pressure and heartbeat will also be measured and your cardiologist will listen to your heart and lungs.

During delivery

Natural birth or vaginal delivery is safe for the majority of women with congenital heart disease. It is important to limit the demand on the heart and good pain relied may be necessary. It is essential to discuss with your obstetrician the various aspects of delivery including the planning and timing of delivery, and the methods of pain relief. For some women, antibiotic prophylaxis is recommended before labour starts to prevent endocarditis.


Women with congenital heart disease may need to stay in hospital slightly longer after delivery to allow the heart to normalise to pre-pregnancy levels.

Pregnancy and Women with Congenital Heart Disease - Diagnosis

Diagnosis normally starts with a physical examination by a doctor, assessment of your medical history, followed by  routine tests. Other recommended tests may include:

Pregnancy and Women with Congenital Heart Disease - Treatments

​National Heart Centre Singapore and the Department of Obstetrics & Gynaecology from Singapore General Hospital run a monthly specialised joint Cardiac-Obstetric Clinic on the last Monday morning of the month to see all pregnant patients with heart disease. Over the last 8 years, we have managed more than one hundred pregnant patients with varying severity of cardiac problems through their pregnancy with successful outcomes.

Pregnancy and Women with Congenital Heart Disease - Preparing for surgery

Pregnancy and Women with Congenital Heart Disease - Post-surgery care

About the NHCS Adult Congenital Heart Disease Clinic

In Singapore, it is estimated that there are 12,000 adults with congenital heart disease and this number is expected to increase by around 300 annually. When patients with congenital heart disease enter adulthood, they require regular monitoring and further surgical intervention at times. In addition to the clinical issues, these patients may also face specific social, psychological and behavioural problems throughout their lives.

With this in mind, the Adult Congenital Heart Disease (ACHD) clinic at the National Heart Centre Singapore is set up to provide one-stop multi-disciplinary services to our ACHD patients so that they receive reliable diagnoses and personalised treatment plans.

Pregnancy and Women with Congenital Heart Disease - Other Information

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

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