Pregnancy and childbirth are among the most important stages in a woman’s life, during which the body undergoes significant changes that affect various organs, including the heart. Although most women adapt naturally to these changes, some may develop a rare heart condition known as peripartum cardiomyopathy (PPCM).This condition occurs when the heart muscle becomes weakened and is unable to pump blood efficiently. It may develop during the final months of pregnancy or during the period following childbirth. The condition can be challenging to recognize because its symptoms may resemble common pregnancy-related symptoms, such as fatigue, shortness of breath, and swelling of the feet and ankles, which may sometimes lead to delayed diagnosis.Therefore, understanding peripartum cardiomyopathy, including its causes, risk factors, symptoms, diagnostic methods, and treatment options, is essential for protecting the mother’s health and reducing the risk of complications.With early diagnosis and appropriate medical care, the chances of recovery can be improved, helping the mother regain heart function and return to her normal daily life.

1. What is peripartum cardiomyopathy?

Peripartum cardiomyopathy (PPCM) is a condition in which the heart muscle becomes weakened, usually during the final stages of pregnancy or within the months following childbirth. This reduces the heart’s ability to pump blood efficiently throughout the body.

2. Is peripartum cardiomyopathy a serious condition?

It can be serious, particularly when the heart muscle is significantly weakened. However, it is treatable, and many women may experience substantial improvement in heart function with appropriate treatment and regular medical follow-up.

3. Does childbirth itself cause peripartum cardiomyopathy?

Not necessarily. The condition is not caused by whether the delivery is vaginal or cesarean. Instead, it is associated with physiological changes that occur during pregnancy and around childbirth, including changes in the cardiovascular system, hormones, and immune system.

4. Can peripartum cardiomyopathy develop after childbirth?

Yes. Symptoms may develop several weeks or even months after delivery. Therefore, women should pay attention to unusual symptoms such as shortness of breath, swelling of the legs, palpitations, and severe fatigue and seek medical evaluation if they occur.

5. What does the ejection fraction (EF) mean?

The ejection fraction (EF) refers to the left ventricular ejection fraction, which measures how effectively the heart pumps blood with each contraction. A lower EF generally indicates more significant impairment of heart function and may require more intensive treatment and medical monitoring.

6. Can the heart muscle return to normal?

Yes. Heart function may improve significantly, and in some cases, it may return to normal. However, regular medical follow-up and echocardiograms remain important for monitoring heart function, even after symptoms have improved.

7. Can a woman become pregnant again after peripartum cardiomyopathy?

Some women may be able to have another pregnancy, but the decision depends largely on how well the heart has recovered and the ejection fraction (EF) before pregnancy. Women who are considering another pregnancy should consult a cardiologist and undergo a comprehensive cardiac assessment because there is a risk of recurrence or worsening heart function during a subsequent pregnancy.

8. Can a mother breastfeed her baby?

Breastfeeding may be possible, depending on the mother’s condition and the medications used to treat her. Some heart medications are compatible with breastfeeding, while others may require dose adjustments or replacement with alternative medications. The appropriate approach should be determined by the treating physician.

9. Should salt and fluid intake be reduced?

When fluid retention or symptoms of heart failure are present, reducing dietary sodium may be recommended. The appropriate amount of fluid intake varies depending on the severity of the condition and heart function and should be determined by the treating physician. Severe fluid restriction should not be undertaken without medical guidance.

10. Can women with peripartum cardiomyopathy exercise?

This depends on the degree of heart muscle weakness and the woman’s overall health. During the active phase of the disease or when severe symptoms are present, physical exertion may need to be limited. Once the condition has stabilized and heart function has improved, the physician can determine an appropriate level of physical activity and gradually increase it according to the individual’s condition.

11. Can peripartum cardiomyopathy be prevented?

There is no guaranteed way to completely prevent peripartum cardiomyopathy. However, the risk of complications may be reduced through regular medical follow-up during pregnancy and after childbirth, proper management of high blood pressure and preeclampsia, avoiding smoking, and following appropriate treatment for any pre-existing heart conditions.

Causes of Peripartum Cardiomyopathy

Peripartum cardiomyopathy (PPCM) is a type of heart muscle weakness that may develop during the final months of pregnancy or in the months following childbirth. It usually causes reduced contraction of the left ventricle and impaired ability of the heart to pump blood efficiently. The condition is generally diagnosed when the left ventricular ejection fraction (LVEF) is below 45%, in the absence of another clear cause of heart failure.

What Causes Peripartum Cardiomyopathy?

The exact cause of peripartum cardiomyopathy is not yet fully understood. It is believed to result from an interaction of hormonal, vascular, immune, and genetic factors in women who may have an underlying susceptibility to the condition. Important proposed mechanisms and risk factors include:

1. Increased Cardiac Workload During Pregnancy

Pregnancy causes major changes in the cardiovascular system, including:

• Increased blood volume.

• Increased heart rate.

• Increased cardiac output.

• Greater workload on the heart to meet the needs of both the mother and fetus.

In some women, the heart muscle may not be able to adapt adequately to this increased workload, particularly when other factors place additional stress on the heart.

Rapid changes in circulation also occur during and shortly after childbirth. After delivery of the placenta, a significant amount of blood may return to the central circulation and the heart, temporarily increasing the workload on the heart, particularly if cardiac function is already impaired.

2. Abnormalities in Prolactin

Abnormalities in the prolactin pathway are among the important theories proposed to explain the development of PPCM.

Prolactin levels increase during pregnancy and after childbirth. This hormone is primarily responsible for stimulating milk production. Increased oxidative stress in some women may cause prolactin to break down into smaller fragments, some of which may have harmful effects on blood vessels and heart muscle.

These changes may contribute to:

• Injury to the cells lining the blood vessels.

• Reduced formation of new blood vessels.

• Impaired blood supply to the heart muscle.

• Damage to cardiac muscle cells.

This mechanism may help explain why PPCM often develops during the peripartum period.

3. Oxidative Stress

Pregnancy causes substantial changes in cellular energy metabolism. In some women, an imbalance may develop between the production of free radicals and the body's ability to neutralize them.

Increased oxidative stress may damage:

• Heart muscle cells.

• Blood vessels.

• Cellular proteins and lipids.

Oxidative stress is also thought to contribute to the conversion of prolactin into forms that may be harmful to the cardiovascular system.

4. Immune Dysfunction and Inflammation

Pregnancy involves natural changes in the immune system that allow the body to adapt to the developing fetus.

In some cases, abnormalities in this immune response may contribute to inflammation or injury of the heart muscle.

Potential mechanisms have been associated with:

• Inflammation.

• Autoimmune abnormalities.

• Myocarditis.

• Certain previous viral infections.

However, none of these factors has been established as the definite cause of PPCM in all patients.

5. Genetic Predisposition

Research suggests that some women may have a genetic predisposition that makes the heart more vulnerable to weakening during pregnancy or after childbirth.

A genetic contribution may be suspected when there is:

• A family history of cardiomyopathy.

• Unexplained heart failure in family members.

• Sudden cardiac death at a young age in a family member.

Some cases of PPCM have also been associated with genetic variants linked to dilated cardiomyopathy.

6. High Blood Pressure and Preeclampsia

High blood pressure and preeclampsia are important risk factors associated with peripartum cardiomyopathy.

Preeclampsia involves abnormalities in placental and vascular function and may increase the activity of factors that affect blood vessels and cardiac function.

As a result, women with hypertension or preeclampsia may have a higher risk of developing PPCM.

7. Multiple Pregnancy

A twin or higher-order multiple pregnancy increases the demands placed on the cardiovascular system because of the greater physiological requirements associated with carrying more than one fetus.

Therefore, the following are considered risk factors:

• Twin pregnancy.

• Triplet or higher-order multiple pregnancy.

8. Poor Nutrition and Nutritional Deficiencies

Poor nutritional status may be a risk factor, particularly in areas where nutritional deficiencies are common.

Inadequate intake of certain nutrients, combined with the increased metabolic demands of pregnancy, may make the heart more vulnerable to stress.

However, this does not mean that vitamin or mineral deficiencies are the direct cause of all cases of PPCM.

9. Certain Medications Used to Prevent Preterm Labor

Prolonged use of certain medications used to suppress uterine contractions (tocolytics), particularly some beta-adrenergic agonists, has been associated with an increased risk of cardiovascular complications in some women.

These medications may increase heart rate and affect the cardiovascular system, potentially increasing the workload placed on the heart in certain circumstances.

10. Other Factors That May Increase the Risk

Several other factors may be associated with an increased risk of peripartum cardiomyopathy, including:

• Advanced maternal age, particularly age over 40.

• Adolescent pregnancy in some cases.

• Multiple pregnancy.

• Multiple previous pregnancies and deliveries.

• High blood pressure.

• Preeclampsia.

• Diabetes.

• Smoking.

• Obesity.

• Pregnancy resulting from assisted reproductive technologies.

• Previous peripartum cardiomyopathy.

• A family history of cardiomyopathy.

• Genetic predisposition to heart muscle disease.

• Certain demographic and geographic factors associated with higher rates of PPCM.

It is important to note that having one or more of these risk factors does not mean that a woman will necessarily develop peripartum cardiomyopathy. In some cases, PPCM can occur even when no obvious risk factor is present.

Symptoms of Peripartum final weeks of pregnancy, during labor, or in the months following delivery. They may initially appear gradually and resemble some normal symptoms of pregnancy, which can Cardiomyopathy (PPCM)

Symptoms of peripartum cardiomyopathy (PPCM) may develop during the final weeks of pregnancy, during labor, or in the months following delivery. They may initially appear gradually and resemble some normal symptoms of pregnancy, which can make the condition more difficult to recognize and diagnose.

Main Symptoms

• Shortness of breath: One of the most common symptoms. It may initially occur during physical activity, then progress to occurring with minimal activity or, in severe cases, even at rest.

• Shortness of breath when lying down: Some women may have difficulty breathing when lying flat and may need to sleep with several pillows or in a semi-upright position.

• Waking up at night with shortness of breath: A woman may suddenly wake up feeling unable to breathe or as though she is choking. Symptoms may improve after sitting or standing.

• Severe fatigue and exhaustion: Fatigue may be more pronounced than the usual tiredness associated with pregnancy or the postpartum period and may interfere with normal daily activities.

• Heart palpitations: A sensation of rapid, forceful, or irregular heartbeats.

• Swelling of the feet, ankles, and legs: This may result from fluid retention and may be accompanied by rapid weight gain.

• Persistent cough: The cough may become worse when lying down and may be accompanied by chest congestion due to fluid accumulation in the lungs.

• Chest pain or pressure: This may occur in some women, particularly when the heart is under significant strain.

• Dizziness or feeling faint: This may result from reduced cardiac output or abnormal heart rhythms.

• Rapid weight gain: A sudden increase in weight over a short period may result from fluid retention rather than increased body fat.

• Cold extremities or pale skin: These may occur in advanced cases because of reduced blood flow to the extremities.

• Reduced urination: In severe cases, decreased blood flow to the kidneys may reduce urine production and contribute to fluid retention.

Symptoms and Signs During Labor

Certain signs during labor require particular attention, including:

• Severe shortness of breath.

• Rapid heart rate.

• Low blood pressure.

• Abnormal heart rhythms.

• Low blood oxygen levels.

• Rapid swelling or a significant increase in fluid retention. medical tests designed to identify weakened heart function, determine its severity, and

However, these symptoms do not necessarily mean that peripartum cardiomyopathy is present. Some may also occur because of other complications related to pregnancy and childbirth, such as bleeding, effects of anesthesia, or blood-pressure disorders. Therefore, symptoms alone cannot confirm the diagnosis. A comprehensive medical evaluation is required, with electrocardiography (ECG) and echocardiography being important tests for assessing heart function.

How Is Peripartum Cardiomyopathy Diagnosed?

The diagnosis of peripartum cardiomyopathy (PPCM) involves several clinical assessments and medical tests designed to identify weakened heart function, determine its severity, and rule out other conditions that can cause similar symptoms.

1. Evaluation of Symptoms and Physical Examination

The doctor first evaluates symptoms that may suggest weakened heart function, including:

• Shortness of breath, particularly when lying down.

• Waking up at night because of shortness of breath or a choking sensation.

• Swelling of the legs and feet.

• Heart palpitations.

• Severe fatigue and exhaustion.

• Chest pain or pressure.

• Dizziness or fainting.

A comprehensive physical examination may then include:

• Measuring blood pressure.

• Measuring heart rate.

• Measuring blood oxygen saturation.

• Checking for swelling in the legs and feet.

• Listening to the heart and lungs for abnormal sounds.

• Looking for signs of fluid retention or pulmonary congestion.

2. Echocardiography — The Key Test

Echocardiography (an echocardiogram) is one of the most important tests used to evaluate heart function. It can assess:

• The pumping function of the left ventricle.

• The left ventricular ejection fraction (EF), which reflects how effectively the heart pumps blood.

• The size of the heart chambers.

• Heart-wall motion.

• Heart-valve function.

• The presence of blood clots inside the heart chambers.

• The presence of fluid around the heart.

A left ventricular ejection fraction (EF) below 45%, in the absence of another clear cause of heart failure, is one of the key criteria used when diagnosing peripartum cardiomyopathy.

3. Electrocardiogram (ECG)

An electrocardiogram evaluates the heart's electrical activity and may show:

• A rapid heart rate.

• Abnormal heart rhythms.

• Nonspecific changes in the heart's electrical activity.

However, a normal ECG does not rule out peripartum cardiomyopathy, so it cannot be used by itself to establish or exclude the diagnosis.

4. Blood Tests

The doctor may order several blood tests to assess heart function and rule out other causes of symptoms, including:

• BNP or NT-proBNP: These may be elevated in people with heart failure.

• Complete blood count (CBC): To check for anemia.

• Kidney and liver function tests: To assess whether heart failure is affecting other organs.

• Electrolytes, particularly sodium and potassium, which may be affected by heart failure or certain medications.

• Thyroid function tests: To rule out thyroid disorders that can cause similar symptoms.

• Other tests may be requested depending on the woman's symptoms and overall health.

5. Chest X-Ray

A chest X-ray may help identify findings associated with heart failure, such as:

• Pulmonary congestion.

• Fluid accumulation in the lungs.

• An enlarged heart.

However, a chest X-ray cannot diagnose peripartum cardiomyopathy on its own and is used as part of a broader medical evaluation.

6. Ruling Out Conditions That Mimic Peripartum Cardiomyopathy

This step is particularly important because several conditions that occur during pregnancy or after delivery can cause similar symptoms, including:

• Preeclampsia.

• Pulmonary embolism (blood clot in the lungs).

• Severe anemia.

• Heart-valve diseases.

• Thyroid disorders.

• Myocarditis.

• Previously undiagnosed heart disease.

If a woman develops sudden chest pain, severe shortness of breath, low oxygen levels, or loss of consciousness, urgent medical evaluation is required to rule out pulmonary embolism and other potentially life-threatening heart or lung conditions.

Pharmacological Treatment of Peripartum Cardiomyopathy

The pharmacological treatment of peripartum cardiomyopathy (PPCM) primarily depends on the patient’s clinical condition, whether she is still pregnant or is in the postpartum period, the degree of left ventricular dysfunction and ejection fraction (EF), blood pressure, and the presence of congestion, thromboembolism, or cardiac arrhythmias.

None of these medications should be started, discontinued, or adjusted without the supervision of a cardiologist and an obstetrician, because the appropriate treatment depends on the patient’s condition and whether she is pregnant or breastfeeding.

1. Diuretics

One example is furosemide.

Diuretics are used when fluid retention or congestion is present. Signs may include:

• Swelling of the legs and feet.

• Pulmonary congestion.

• Shortness of breath.

• Rapid weight gain due to fluid retention.

These medications increase the excretion of fluid and electrolytes through the kidneys, helping to reduce congestion and relieve the workload on the heart.

2. Beta-Blockers

Examples include:

• Metoprolol.

• Bisoprolol.

• Carvedilol.

These medications help reduce the heart rate and the workload on the heart and may contribute to improving cardiac function over the long term.

Beta-blockers are generally used after the patient’s condition has stabilized, taking into account blood pressure and heart rate and avoiding their use or carefully adjusting them in cases of acute decompensated heart failure or severe hypotension.

3. Medications to Improve Cardiac Function After Delivery

After delivery, certain medications that help improve cardiac function and reduce the workload on the heart can be used. These include:

• Angiotensin-converting enzyme (ACE) inhibitors, such as enalapril.

• Angiotensin II receptor blockers (ARBs) in selected cases.

• Sacubitril/valsartan (ARNI) in selected patients according to medical assessment.

These medications reduce the resistance against which the heart pumps blood and may help improve left ventricular function and reduce symptoms of heart failure.

Important: Some of these medications, including ACE inhibitors, ARBs, and ARNIs, are contraindicated during pregnancy. Therefore, the treatment strategy differs significantly between pregnant and postpartum women.

4. Mineralocorticoid Receptor Antagonists

An example is spironolactone.

It may be used in some patients with heart failure, particularly when left ventricular function is significantly reduced, after assessment of kidney function and serum potassium levels.

Regular monitoring is required to avoid hyperkalemia and deterioration of renal function.

5. Anticoagulants

Not all women with peripartum cardiomyopathy require anticoagulation.

A physician may consider anticoagulant therapy in certain situations, such as:

• Presence of an intracardiac thrombus.

• Some cases of severely reduced EF.

• Certain cardiac arrhythmias, such as atrial fibrillation.

• Use of bromocriptine in some treatment protocols.

Anticoagulants may include heparin or other agents appropriate for the patient’s condition.

The decision to use anticoagulation must be made carefully, balancing the risk of thromboembolism against the risk of bleeding, particularly around delivery and during the postpartum period.

6. Bromocriptine

Bromocriptine inhibits the secretion of the hormone prolactin and has therefore been investigated as part of the treatment of peripartum cardiomyopathy.

It may be considered in selected patients under specialist supervision, but it is not routinely used in every patient with PPCM.

An important consideration is that bromocriptine suppresses breast milk production and may be associated with an increased risk of thromboembolic events. Therefore, the physician may need to assess whether anticoagulation is appropriate when bromocriptine is used.

What Happens If the Condition Develops During Labor?

If signs of acute heart failure or severe shortness of breath develop during labor, the patient requires hospital-based assessment and close monitoring. Management may include:

• Oxygen therapy when indicated.

• Diuretics when pulmonary or systemic congestion is present.

• Medications to support the circulation in severe cases, depending on blood pressure and cardiac status.

• Continuous monitoring of heart rate and oxygen saturation.

• Monitoring of fetal status.

• Assessment for cardiac interventions or intensive care in critically ill patients.

There is no single medication dose that is appropriate for every patient. Drug selection and dosing depend on EF, blood pressure, heart rate, kidney function, serum potassium levels, the presence of congestion or thromboembolism, and whether the patient is pregnant or postpartum.

Treatment After Delivery

After delivery, the use of heart-failure medications becomes more flexible because some medications that are contraindicated during pregnancy can be used, depending on the patient’s condition and breastfeeding status.

The goals of treatment are to:

• Relieve symptoms of heart failure.

• Reduce fluid retention.

• Improve left ventricular function.

• Reduce the risk of complications.

• Promote recovery of cardiac function.

• Prevent future deterioration.

The patient requires regular follow-up with a cardiologist and periodic echocardiography to assess recovery of the ejection fraction and left ventricular function.

Surgical and Interventional Treatment of Peripartum Cardiomyopathy

Surgery is not the primary treatment for peripartum cardiomyopathy (PPCM), as most cases are managed with medications and close medical follow-up. However, patients with severe disease or serious complications may require interventional procedures or mechanical circulatory support, depending on the severity of the condition, cardiac function, and response to medical therapy.

1. Interventional Cardiac Catheterization

Cardiac catheterization is not used to directly treat peripartum cardiomyopathy itself. However, it may be necessary if cardiac dysfunction is related to another condition, such as coronary artery disease.

In general, the procedure involves:

• Inserting a thin catheter through a blood vessel, usually in the wrist or groin.

• Guiding the catheter toward the coronary arteries using X-ray imaging.

• Injecting contrast material to identify the location of any obstruction.

• If an appropriate stenosis is found, the artery may be dilated using a balloon.

• A stent may be placed to help keep the artery open.

PPCM itself is not treated by a catheter that “opens” or directly strengthens the heart muscle.

2. Implantable Cardioverter-Defibrillator (ICD)

An ICD may be considered in selected patients who continue to have severely reduced cardiac function or who are at significant risk of life-threatening ventricular arrhythmias.

The procedure generally involves:

• Administration of local anesthesia, sometimes with sedation depending on the patient’s condition.

• Making a small incision beneath the skin in the upper chest near the collarbone.

• Inserting leads through a vein into the appropriate chambers of the heart.

• Connecting the leads to the defibrillator.

• Placing the device under the skin.

• Testing and programming the device.

• Closing the incision.

The device can detect certain dangerous cardiac arrhythmias and deliver an electrical shock when necessary.

Because cardiac function may recover spontaneously or with medical treatment during the months following PPCM diagnosis, immediate ICD implantation is not appropriate for every patient. Temporary protection may be considered in selected high-risk cases.

3. Wearable Cardioverter-Defibrillator

In some patients with very low EF and a high risk of life-threatening ventricular arrhythmias, a wearable cardioverter-defibrillator (WCD) may be used during the period in which recovery of cardiac function is being awaited.

This is an external device worn by the patient that continuously monitors cardiac rhythm and can deliver an electrical shock when it detects a dangerous rhythm requiring treatment.

It is considered a temporary option in selected cases and does not directly treat the underlying myocardial dysfunction.

4. Cardiac Resynchronization Therapy (CRT)

CRT may be appropriate for selected patients who have persistent severe left ventricular dysfunction together with significant electrical conduction abnormalities.

The procedure generally involves:

• Inserting electrical leads through the veins into the heart.

• Positioning the leads in specific areas, including the right and left ventricles, depending on the type of device.

• Connecting the leads to an electronic device implanted beneath the skin.

• Programming the device to help coordinate ventricular contractions.

Not all women with PPCM require CRT. The decision depends on EF, the electrocardiogram (ECG), the type of conduction abnormality, and the persistence of cardiac dysfunction despite appropriate medical therapy.

5. Left Ventricular Assist Device (LVAD)

An LVAD may be used in severe cases of advanced heart failure that do not respond adequately to medical therapy and other interventions.

Its main functions are to:

• Draw blood from the left ventricle.

• Pump blood into the aorta.

• Support blood flow to the body’s organs.

• Reduce the workload on the left ventricle.

An LVAD may be used as:

• A bridge to heart transplantation in a patient requiring temporary support while awaiting a suitable donor heart.

• Temporary support until cardiac function recovers in selected patients in whom recovery is considered possible.

LVAD implantation is a major procedure and requires management at a specialized advanced heart-failure center.

6. Extracorporeal Membrane Oxygenation (ECMO)

ECMO may be used in critically ill patients who develop severe acute cardiac failure or cardiogenic shock that does not respond to conventional treatment.

In general, ECMO works by:

• Removing blood from the body through large cannulas.

• Passing the blood through an extracorporeal circuit.

• Adding oxygen and removing carbon dioxide.

• Returning the blood to the circulation.

ECMO provides temporary circulatory and respiratory support, giving the heart an opportunity to recover or allowing the medical team to evaluate subsequent options, such as LVAD implantation or heart transplantation when necessary.

7. Heart Transplantation

Heart transplantation is considered a last-resort option in patients who develop very advanced heart failure and whose cardiac function does not respond to medical therapy or mechanical circulatory support.

In general, the process involves:

• Evaluating the patient to determine eligibility for transplantation.

• Selecting a suitable donor heart according to medical criteria.

• Replacing the diseased heart with the donor heart.

• Connecting the transplanted heart to the major blood vessels.

• Monitoring the patient after surgery in a specialized unit.

After heart transplantation, the patient requires long-term immunosuppressive medications, usually for life, to prevent rejection of the transplanted heart.

8. Is There Surgery to Repair the Heart Muscle Itself?

At present, there is no routine surgical procedure specifically designed to repair or directly “strengthen” the heart muscle in patients with peripartum cardiomyopathy.

Similarly, procedures used for certain other types of cardiomyopathy, such as surgical removal of part of the heart muscle in hypertrophic obstructive cardiomyopathy, are not standard treatments for PPCM.