Heart Failure

Quick answer

Heart failure does not mean your heart has stopped. It has not, and it is not about to. It means your heart cannot pump enough blood to meet your body's needs, and it can affect one side or both. You may be short of breath when you exert yourself or lie down, tired, swollen in the legs and ankles, or up at night to urinate. Sudden breathlessness with pink, foamy mucus is an emergency.

Heart failure is a condition in which the heart can’t pump enough blood to meet the body’s needs. Heart failure does not mean that your heart has stopped or is about to stop working. It means that your heart is not able to pump blood the way it should. It can affect one or both sides of the heart.

Risk is not evenly spread across the state. The county-level prevalence figures we publish show where these conditions concentrate.

Illustration of a normal heart vs. an enlarged heart

What are the symptoms of heart failure?

Signs and symptoms of heart failure may include the following:

shortness of breath (dyspnea) when you exert yourself or when you lie down
fatigue
swelling (edema) in your legs, ankles and feet
rapid or irregular heartbeat
a reduced ability to exercise
persistent cough or wheezing with phlegm
increased need to urinate at night
swelling of your abdomen (ascites)
fluid retention, causing rapid weight gain
lack of appetite and nausea
difficulty concentrating or decreased alertness
sudden, severe shortness of breath and coughing up pink, foamy mucus

See your doctor if you think you might be experiencing signs or symptoms of heart failure. Seek emergency treatment if you experience any of the following:

chest pain if your heart failure is caused by a heart attack
fainting or severe weakness
rapid or irregular heartbeat associated with shortness of breath, chest pain or fainting
sudden, severe shortness of breath and coughing up pink, foamy mucus

What are the causes of heart failure?

Heart failure often develops after other conditions have damaged or weakened your heart, such as coronary artery disease, heart attack, hypertension, or faulty heart valves. But heart failure can also occur if the heart becomes too stiff.

In heart failure, the main pumping chambers of your heart (the ventricles) may become stiff and not fill properly between beats. In some cases of heart failure, your heart muscle may become damaged and weakened, and the ventricles stretch (dilate) to the point that the heart can’t pump blood efficiently throughout your body. Over time, the heart can no longer keep up with the normal demands placed on it to pump blood to the rest of your body.

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Common Types of Arrhythmia

Heart arrhythmias are broadly divided into two major groups, tachycardia and bradycardia.

1. Tachycardia—Fast Heartbeat

Tachycardia occurs when the heart beats faster than normal, typically over 100 beats per minute. You may notice a racing heartbeat, shortness of breath, dizziness, or chest discomfort. Persistent tachycardia can increase the risk of complications if left untreated.

Tachycardia can further be broken down into:

Atrial Fibrillation (AFib)

Atrial fibrillation is an irregular and often rapid heartbeat originating in the atria (the heart’s upper chambers). It can cause palpitations, shortness of breath, weakness, or chest pain. AF increases the risk of blood clots, stroke, and other complications, making timely diagnosis and management essential.

Atrial Flutter

The difference between atrial flutter and AFib is that the heartbeat is more organized. It often causes a fast but regular heartbeat and may lead to symptoms such as palpitations, fatigue, shortness of breath, or chest discomfort. While it is not as severe as AFib, atrial flutter can still increase your risk of blood clots and stroke if left untreated.

Ventricular fibrillation (V-fib)

This life-threatening form of arrhythmia occurs when the ventricles (the heart’s lower chambers) quiver instead of pumping blood. V-fib can cause a sudden and severe drop in blood pressure, leading to collapse or cardiac arrest. Early detection and prompt intervention are important to boost the patient’s chances of survival.

Supraventricular Tachycardia

In the case of supraventricular tachycardia, you’ll experience a rapid heartbeat above your ventricles, which usually leads to palpitations, a pounding chest, lightheadedness, or shortness of breath. An episode can range from seconds to hours and can come without warning. It is not always dangerous, but it can be disruptive and uncomfortable to deal with.

Ventricular Tachycardia

This is another form of arrhythmia that happens in the ventricles and it may prevent the heart from pumping blood properly. It can cause symptoms such as dizziness, palpitations, chest pain, and even fainting. VT can be serious, especially if it lasts longer than a few seconds, as it may progress to ventricular fibrillation.

2. Bradycardia—Slow Heartbeat

Bradycardia is characterized by a slower-than-normal heartbeat, usually under 60 beats per minute. Symptoms can include fatigue, dizziness, fainting, or difficulty exercising. While sometimes harmless, severe bradycardia may require medical evaluation or intervention.

It usually occurs in two primary forms:

Sick Sinus Syndrome

Although it can be mild at first, sick sinus syndrome often requires medical evaluation to prevent worsening rhythm problems. When the sinus node, your heart’s natural pacemaker, doesn’t work as it should, this is called sick sinus syndrome. It can cause the heart to alternate between beating too slowly, too quickly, or irregularly. Symptoms typically include fatigue, dizziness, palpitations, and fainting.

Conduction Block

A conduction block, or a heart block, happens when the electrical signals that travel through your heart are delayed or stopped. This could result in your heart beating slower or skipping beats entirely. You may also experience lightheadedness, fainting, or noticeable fatigue.

What Are the Symptoms of Heart Arrhythmia and When Should You See a Doctor?

You should see a doctor if you notice frequent or persistent irregular heartbeats, especially if accompanied by any of the following symptoms:

A fluttering, pounding or racing feeling in the chest
A fast heartbeat
A slow heartbeat
Chest pain
Shortness of breath
Anxiety
Feeling very tired
Lightheadedness or dizziness
Sweating
Fainting or almost fainting
Heart palpitations

Heart Arrhythmia Diagnosis & Treatment

Because arrhythmias can present differently in each individual, it’s best for doctors to conduct a thorough evaluation. This will allow them to pinpoint the underlying cause and create a treatment plan tailored to your condition.

Diagnosis typically begins with a comprehensive review of your symptoms, medical history, and overall heart health. From there, your doctor may recommend one or more diagnostic procedures, such as an echocardiogram, an electrocardiogram (EKG), and a stress test, to assess your heart’s structure, rhythm, and electrical activity.

Heart Arrhythmia Treatments

Treatment for heart arrhythmia depends on the type, its severity, and your overall health. Your doctor will develop a personalized plan based on your specific diagnosis and symptoms.

Lifestyle recommendations are often the first step in managing mild arrhythmias. Improving your sleep habits, managing stress, and reducing caffeine or alcohol intake can help stabilize your heart rate and reduce episodes over time. If necessary, your doctor may also place you on medications to help regulate your heart. For complex cases, your doctor may recommend advanced procedures such as catheter ablation or the use of implantable devices, including pacemakers or defibrillators, which help regulate the heart’s rhythm automatically.

Frequently Asked Questions

If you still have any questions, our team is here to help. You can speak with one of our board-certified specialists by booking a consultation, where we’ll review your symptoms, perform any necessary testing, and guide you toward the right next steps for your heart health.

What Is the Most Serious Type of Arrhythmia?

The most serious type of arrhythmia is ventricular fibrillation (V-fib), a life-threatening condition where the heart’s lower chambers quiver instead of pumping blood.

What Is an Irregular Heartbeat?

An irregular heartbeat, also known as an arrhythmia, occurs when the heart beats too fast, too slow, or inconsistently. It may feel like fluttering, skipping beats, or a sudden racing sensation.

What Heart Rate is Considered Abnormal?

A resting heart rate consistently below 60 beats per minute (bradycardia) or above 100 beats per minute (tachycardia) is generally considered abnormal.

How Is Arrhythmia Diagnosed?

Arrhythmia is diagnosed through tests that measure the heart’s electrical activity and rhythm. Some common procedures for running these tools include electrocardiograms (EKGs), Holter monitors, stress tests, and echocardiograms. After running these tests, a doctor then uses this information to determine the most appropriate treatment plan for you.

Schedule a personalized assessment and find out your treatment options.

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Dr. Moinakhtar Lala and Dr. Mehran J. Khorsandi of CACVI

Dr. M Lala, Dr. Mehran J. Khorsandi and Dr. V Lala

Meet Your Specialists

The Center for Advanced Cardiac and Vascular Interventions (CACVI) is led by Dr. M Lala, Dr. Khorsandi, and Dr. V Lala, who have over thirty years of practice with over 15,000 vascular and cardiac procedures performed. Our physicians are determined to provide each patient with experienced, compassionate care as they work diligently to improve your health.