Peripartum Cardiomyopathy
Heart failure that develops around the time of childbirth
Quick Facts
- Type: Pregnancy-related heart failure
- Timing: Late pregnancy to months after delivery
- Key feature: Weakened, enlarged heart muscle
- Watch for: Breathlessness, swelling, fatigue
Overview
Peripartum cardiomyopathy is an uncommon but serious form of heart failure in which the heart muscle becomes weakened and enlarged toward the end of pregnancy or in the first several months after giving birth. As a result, the heart cannot pump blood as efficiently, leading to fluid buildup and symptoms of heart failure.
Because its early symptoms, such as fatigue, breathlessness, and swollen ankles, can overlap with normal late pregnancy and the postpartum period, the condition is sometimes missed at first. Early recognition matters, because prompt treatment improves the chance of recovery. Many women regain normal or near-normal heart function over time, though some have lasting effects.
Symptoms
Symptoms are those of heart failure and can develop gradually or come on more quickly.
- Shortness of breath, especially with activity or when lying flat
- Waking at night feeling breathless
- Swelling of the ankles, feet, and legs
- Unusual or severe fatigue
- Rapid or pounding heartbeat and palpitations
- Persistent cough or wheezing
- Reduced ability to exercise
Seek emergency care for severe shortness of breath, chest pain, coughing up pink frothy fluid, fainting, or a feeling of severe distress, as these can indicate serious heart failure.
Causes
The exact cause of peripartum cardiomyopathy is not fully understood. It is thought to result from a combination of factors related to the stresses of pregnancy on the heart and blood vessels, hormonal changes, and possibly inflammation and genetic susceptibility. Pregnancy greatly increases the volume of blood the heart must pump, which may unmask or contribute to the problem in vulnerable women.
It is not caused by anything the mother did wrong. Research continues into the roles of hormonal signals around delivery, blood vessel function, and inherited factors that may increase risk.
Risk Factors
- Older maternal age
- Carrying twins or multiples
- High blood pressure in pregnancy or preeclampsia
- A personal or family history of cardiomyopathy or heart failure
- Multiple previous pregnancies
- Obesity and certain chronic health conditions
Diagnosis
Diagnosis involves confirming weakened heart function and ruling out other causes of the symptoms.
- Echocardiogram: An ultrasound of the heart that measures how well it is pumping and is central to diagnosis.
- Physical exam: Listening for signs of fluid buildup and heart strain.
- Electrocardiogram (ECG): To check the heart's rhythm and electrical activity.
- Blood tests: Including markers of heart strain, and tests to exclude other conditions.
- Chest imaging: To assess for fluid in the lungs and heart enlargement.
Because symptoms overlap with normal pregnancy, a high index of suspicion is important when breathlessness and swelling are out of proportion.
Treatment
Treatment follows heart failure principles, adapted to whether the woman is pregnant or breastfeeding, and is coordinated by a cardiology and obstetric team.
- Heart failure medications: Medicines to remove excess fluid, ease the heart's workload, and support its function, chosen for safety in pregnancy or breastfeeding.
- Monitoring fluid and salt: Limiting salt and tracking weight and symptoms.
- Managing rhythm and clot risk: Treatment of any arrhythmias and, in some cases, blood thinners to reduce clot risk.
- Close follow-up: Repeat echocardiograms to track recovery of heart function.
- Advanced therapies: Rarely, devices or other specialist treatments for severe cases.
Many women improve over months with treatment, though some require ongoing therapy. Future pregnancies should be discussed carefully with specialists.
Prevention
Peripartum cardiomyopathy cannot be reliably prevented, but risks can be reduced and problems caught early:
- Attend all prenatal and postpartum visits
- Report breathlessness, swelling, or unusual fatigue rather than assuming it is normal pregnancy tiredness
- Manage blood pressure and conditions such as preeclampsia
- Maintain a healthy weight and follow medical advice during pregnancy
- Discuss future pregnancy risks with a cardiologist if you have had this condition
When to See a Doctor
Contact your provider promptly during late pregnancy or after delivery if you notice increasing breathlessness, swelling, or fatigue beyond what feels normal. Seek emergency care or call emergency services for:
- Severe shortness of breath or breathlessness at rest
- Chest pain or pressure
- Coughing up pink, frothy fluid
- Fainting or a fast, irregular heartbeat with dizziness
Frequently Asked Questions
When does peripartum cardiomyopathy occur?
It develops in the last month of pregnancy or, more often, in the first several months after delivery. Because its symptoms overlap with normal late pregnancy and the postpartum period, it can be missed early, so any breathlessness or swelling that seems excessive should be evaluated.
Can women recover from peripartum cardiomyopathy?
Many women regain normal or near-normal heart function over months with treatment, especially when it is started early. Some have lasting reduction in heart function and need ongoing therapy. Recovery varies, which is why close follow-up with echocardiograms is important.
What are the warning signs I should not ignore?
Watch for increasing shortness of breath, especially when lying flat or waking at night, swelling of the legs, unusual fatigue, and palpitations. Severe breathlessness, chest pain, coughing up frothy fluid, or fainting are emergencies needing immediate care.
Is it safe to have another pregnancy afterward?
Future pregnancy carries added risk, particularly if heart function has not fully recovered. Decisions about another pregnancy should be made together with a cardiologist and obstetrician after careful assessment of heart function.
What causes peripartum cardiomyopathy?
The exact cause is unknown but is thought to involve the cardiovascular stresses of pregnancy, hormonal changes around delivery, inflammation, and possibly inherited susceptibility. It is not caused by anything the mother did, and research into its causes is ongoing.
References
- American Heart Association (AHA). Peripartum Cardiomyopathy (PPCM).
- Mayo Clinic. Peripartum cardiomyopathy.
- MedlinePlus, U.S. National Library of Medicine. Cardiomyopathy.