Understanding Heart Murmurs: Causes, Diagnosis, and Treatment

A heart murmur is an unusual sound heard during a heartbeat, typically described as a swooshing or swishing noise caused by turbulent blood flow through the heart chambers or valves. While hearing that you or a loved one has a heart murmur can sound alarming, many heart murmurs are harmless and require no treatment. However, some murmurs indicate an underlying cardiovascular condition that requires expert evaluation and care.

At Cardiovascular Consultants, P.C., our board-certified cardiologists specialize in diagnosing and managing all forms of heart murmur to ensure your long-term cardiovascular health and peace of mind.

Innocent vs. Abnormal Heart Murmurs

Heart murmurs fall into two main categories: innocent (harmless) and abnormal (pathological).

Category	Overview	Common Characteristics	Typical Management
Innocent Murmur	Caused by blood moving faster than usual through a healthy heart. Very common in children, pregnant women, and athletes.	• No structural heart defects • No physical symptoms • Often disappears over time	• No treatment required • Routine follow-up during regular checkups
Abnormal Murmur	Caused by structural heart problems, such as a damaged valve, congenital defect, or enlarged heart muscle.	• Associated with structural abnormalities • May present with symptoms like fatigue or shortness of breath • May change in intensity over time	• Requires thorough diagnostic evaluation • Managed with monitoring, medication, or valve repair/replacement

What Causes an Abnormal Heart Murmur?

When a heart murmur is deemed abnormal, it is usually linked to structural issues within the heart valves or blood vessels:

Heart Valve Disease:
- Stenosis: The valve opening becomes narrowed, restricting blood flow and forcing the heart to work harder.
- Regurgitation (Leaky Valve): The valve fails to close completely, allowing blood to leak backward into the heart chamber.
Congenital Heart Defects: Structural defects present from birth, such as septal defects (“holes in the heart”) or abnormal vessel connections.
Endocarditis: An infection of the inner lining of the heart and valves, which can damage valve leaflets.
Valve Calcification: Age-related hardening or thickening of the heart valves, particularly the aortic valve.
Rheumatic Fever: A complication of untreated strep throat that can permanently damage the heart valves.

Symptoms to Watch For

While innocent murmurs produce no symptoms, an abnormal murmur caused by underlying valve disease or structural defects may cause:

Shortness of breath, especially during exertion or when lying flat
Unexplained fatigue, weakness, or reduced stamina
Swelling in the legs, ankles, feet, or abdomen (edema)
Chest pain, pressure, or tightness
Dizziness, lightheadedness, or fainting (syncope)
Bluish skin tone on fingertips or lips (cyanosis)

Important: If you experience sudden chest pain, severe shortness of breath, or loss of consciousness, seek emergency medical care immediately.

How We Diagnose Heart Murmurs

At Cardiovascular Consultants, P.C., our comprehensive diagnostic process begins with a careful physical examination using a stethoscope to assess the murmur’s timing, location, pitch, and intensity. To determine the precise cause, our cardiologists utilize state-of-the-art diagnostic imaging:

Echocardiogram (Cardiac Ultrasound): The primary diagnostic tool. It uses sound waves to create detailed images of your heart’s valves, chambers, and blood flow in real time.
Electrocardiogram (ECG / EKG): Measures the electrical activity of your heart to detect arrhythmias or signs of strain.
Chest X-Ray: Checks for heart enlargement or fluid accumulation in the lungs.
Cardiac CT or MRI: Provides high-resolution cross-sectional images for complex valve or congenital conditions.
Cardiac Catheterization: Measures pressure and blood flow within the heart chambers when advanced evaluation is needed.

Treatment & Management Options

Treatment depends on the cause, severity, and whether you have symptoms:

Innocent Murmurs: Require no medical or surgical intervention.
Monitoring & Lifestyle Modification: Mild valve conditions may simply require regular monitoring with periodic echocardiograms, along with heart-healthy lifestyle habits.
Medications: Prescribed to manage underlying conditions, reduce workload on the heart, or prevent complications (e.g., blood thinners, ACE inhibitors, beta-blockers, or diuretics).
Interventional Procedures & Surgery: For severe valve stenosis, severe regurgitation, or congenital defects, procedures such as Transcatheter Aortic Valve Replacement (TAVR), balloon valvuloplasty, or surgical valve repair/replacement may be recommended.

Schedule a Cardiovascular Evaluation

If your primary physician detected a heart murmur or if you are experiencing symptoms like shortness of breath or fatigue, prompt expert evaluation is essential.

Contact Cardiovascular Consultants, P.C. today to schedule a consultation with one of our experienced cardiology specialists.