Trusted Treatment and Answers for Myocardial Infarction Complications

A myocardial infarction, which is the medical term for a heart attack, happens when blood flow to the heart muscle is blocked. While many people recover well, some may have complications that affect how the heart works during healing or long after. These complications can be mild or life-threatening and may develop suddenly or over time.  

At Keck Medicine of USC, our cardiologists closely monitor you after a heart attack. They use advanced testing and personalized care plans to treat complications early and protect your long-term health. 

Expert Care for Complications After a Heart Attack

After a heart attack, some people face new heart problems. Our team can assess the cause fast and guide next steps. The following problems may occur after a heart attack. 

Abnormal Heart Rhythms (Arrhythmias)

A damaged heart muscle can disrupt the heart’s electrical signals and lead to fast, irregular or slow heartbeats. Some arrhythmias can be dangerous if they’re not treated. 

Heart Failure

When part of the heart muscle weakens, the heart may not be able to pump enough blood to meet the body’s needs. People often notice fatigue, shortness of breath or fluid buildup. 

Cardiogenic Shock

This is a serious emergency that happens when the heart suddenly can’t pump enough blood to support vital organs. It can cause low blood pressure and organ damage and requires immediate treatment. 

Damage to the Heart’s Structure

A heart attack can damage heart valves or walls. The damage may include rare but severe ruptures that prevent normal blood flow. 

Inflammation of the Heart or Surrounding Tissue

Inflammation, such as pericarditis, may develop days or weeks after a heart attack and can cause ongoing chest pain. 

Blood Clots and Stroke Risk

Poor heart function can allow blood clots to form. This raises the risk of stroke or other complications if a clot travels through the bloodstream. 

Recurrent Heart Attack

Having one heart attack raises the risk of another, especially without ongoing treatment and risk management. 

Common Symptoms of Complications from a Heart Attack 

Symptoms of heart attack complications can vary based on the condition. They may also appear suddenly or slowly. Common symptoms include: 

• Chest discomfort or pressure 
• Dizziness or fainting, also called syncope 
• Rapid, slow or irregular heartbeat 
• Shortness of breath 
• Swelling in your legs, ankles or stomach 
• Unusual fatigue or weakness 

If symptoms get worse or return after a heart attack, seek emergency care right away. 

Treatments We Offer for Heart Attack Complications  

Treatment for heart attack complications depends on the type of condition and how severe it is. At Keck Medicine of USC, we build a care plan around your symptoms, test results and goals. Your plan may include: 

• Advanced cardiac tests, such as heart imaging and rhythm tests, to pinpoint the cause of symptoms 
• Cardiac rehabilitation to rebuild strength, raise stamina and support recovery 
• Follow-up care focused on preventing future problems with a clear plan for medications, risk factors and warning signs 
• Medications to manage arrhythmia and heart function 
• Procedures to restore blood flow, such as cardiac catheterization with angioplasty/stent, and surgery when needed 
• Specialized rhythm care, which may include cardioversion, catheter ablation or pacemaker or ICD placement  

Our teams work together to care for you from the time you’re in the hospital through recovery and beyond.