Symptoms and Emergency Warning Signs

A left ventricular aneurysm (LVA) can exist for years without causing any obvious symptoms. In many cases, it is found “incidentally”—meaning it was discovered while a doctor was looking for something else, often when an electrocardiogram (ECG) suggests a prior issue that leads to a routine heart scan ^[1].

However, because an LVA changes the shape and efficiency of your heart, it can cause chronic symptoms or, in rare cases, lead to medical emergencies. Understanding which symptoms are manageable and which require a 911 call is a vital part of living with this condition.

What Should I Do?

• Call 911 Now: New or severe chest pain, extreme shortness of breath, fainting, signs of stroke, or severe sustained palpitations. If you receive an ICD shock, seek emergency help based on your doctor’s specific instructions.
• Contact the Cardiology Team Today: Unexplained rapid weight gain, new leg swelling, or an ICD shock without other symptoms.
• Mention at Your Next Visit: Occasional brief palpitations without dizziness, or gradual mild fatigue.

When to Call 911: Emergency Warning Signs

Certain symptoms indicate that the heart’s structure or rhythm has become dangerously unstable. These require immediate emergency medical evaluation.

New Chest Pain

New, severe, persistent, or worsening chest pressure—whether you have a true aneurysm or pseudoaneurysm—can represent a new heart attack (acute coronary syndrome) and requires immediate 911 evaluation.

Signs of Stroke or Blood Clots

Because blood can “pool” inside the bulge of an aneurysm, it may form a clot (thrombus) ^[2]. If a piece of this clot breaks off and travels to the brain, it causes a stroke. Use the B.E. F.A.S.T. acronym to recognize these signs:

• Balance: Sudden loss of balance or coordination.
• Eyes: Sudden vision loss or double vision ^[3].
• Face: One side of the face droops or is numb.
• Arm: One arm or leg becomes weak or numb, especially on just one side of the body ^[2].
• Speech: Slurred speech or difficulty finding words.
• Time: Call 911 immediately.

Clots can also travel to other parts of the body, causing sudden, severe abdominal pain or a cold, painful, pale limb ^[4].

Dangerous Heart Rhythms

The scar tissue of an aneurysm can interfere with the heart’s electrical signals, leading to Ventricular Tachycardia (VT)—a dangerously fast heart rate ^[5].

• Symptoms: Sudden “pounding” or racing in the chest accompanied by severe dizziness, fainting (syncope), or confusion ^[5][6].
• Cardiac Arrest: If the rhythm becomes too disorganized (Ventricular Fibrillation), it leads to immediate collapse and loss of consciousness, requiring CPR and emergency intervention ^[7].

Pseudoaneurysm Rupture and Tamponade

A pseudoaneurysm is a much higher-risk condition than a true aneurysm ^[8]. If it begins to leak or rupture, blood can fill the sac around the heart, a life-threatening condition called cardiac tamponade ^[9].

• Warning Signs: Sudden, severe chest pain, extreme shortness of breath, a rapid drop in blood pressure (causing profound weakness or fainting), and a racing heart ^[8][10].

Chronic Symptoms: Living with an LVA

For most patients with a true chronic aneurysm, symptoms develop slowly over time. These are not typically immediate emergencies but should be discussed with your cardiologist promptly.

Heart Failure Symptoms

When a portion of the heart wall is scarred and doesn’t pump (or bulges outward when it should squeeze), the heart has to work harder to circulate blood ^[11]. This can lead to:

• Shortness of Breath: Especially during physical activity or when lying flat at night (orthopnea) ^[1].
• Fatigue: Feeling unusually tired or weak during normal daily tasks.
• Swelling (Edema): Fluid buildup in the legs, ankles, or abdomen ^[12].

Angina (Chest Pain)

You may experience angina, which often feels like pressure, squeezing, or fullness in the chest ^[1]. This happens when the heart muscle—including the areas around the aneurysm—isn’t getting enough oxygen-rich blood, often because of underlying coronary artery disease ^[13].

Palpitations

Even if they aren’t the dangerous “emergency” type mentioned above, you may feel skipped beats, “flopping” sensations, or brief periods of a racing heart. These are often caused by extra electrical signals originating near the scarred tissue of the aneurysm ^[12][13].

Important Note: A true chronic aneurysm is built of tough scar tissue and is very unlikely to rupture suddenly ^[14]. If you have been diagnosed with a true LVA, your medical team will focus on managing these chronic symptoms and preventing complications like clots rather than worrying about an immediate rupture.