Rapid Heartbeat: Risks and Causes Explained

Tachycardia

Hello, I would like to ask Dr.
He about my frequent anxiety and unexplained rapid heartbeat, which can reach over 90 to 100 even when I am sitting and resting.
I read an article online stating that a heart rate over 100 can easily lead to sudden death, and I often experience rates in the 110s.
With anxiety and panic, it sometimes goes up to the 130s.
Is this very dangerous? I have undergone examinations and have been diagnosed with mitral valve prolapse and some early contractions.
Additionally, I would like to know how common it is for an average person to develop endocarditis or myocarditis.

Zhang Jiazhen, 20~29 year old female. Ask Date: 2019/10/17

Dr. He Dongjin reply Cardiology

Hello, the information circulating online should be taken lightly.
A person dies when the heart stops beating, not because it beats too fast; a heart rate exceeding 100 beats per minute does not easily lead to sudden death.
This is purely nonsense and not dangerous.
Additionally, the likelihood of developing endocarditis or myocarditis is very low for the average person, likely much lower than the chance of choking on water.
Don't scare yourself unnecessarily.
Changhua Hospital cares about your well-being.

Reply Date: 2019/10/17

More Info

Rapid heartbeat, or tachycardia, can be a concerning symptom, especially when it occurs frequently or without clear provocation. It is understandable to feel anxious about your heart rate, particularly when you read alarming information online. However, it is essential to approach this topic with a balanced perspective, considering both the physiological aspects and the psychological factors involved.

Understanding Tachycardia
Tachycardia is defined as a heart rate exceeding 100 beats per minute (BPM) in adults. While it can be a normal response to exercise, stress, or anxiety, persistent or unexplained tachycardia warrants further investigation. In your case, you mentioned experiencing heart rates in the range of 90 to over 130 BPM, often associated with anxiety or panic attacks. Anxiety can significantly impact heart rate, as the body's "fight or flight" response triggers the release of adrenaline, leading to an increased heart rate.

Risks Associated with Rapid Heartbeat
While a heart rate above 100 BPM can be concerning, it is crucial to consider the context. If your heart is structurally normal and you have undergone tests that show no significant issues, such as coronary artery disease or severe arrhythmias, the risk of sudden cardiac events is generally low. However, certain conditions can increase the risk of complications:
1. Structural Heart Issues: You mentioned having mitral valve prolapse (MVP) and some early contractions (premature beats). MVP is often benign, but it can be associated with palpitations and, in rare cases, more severe complications. Regular monitoring and follow-up with your cardiologist are essential.

2. Anxiety and Panic Disorders: Chronic anxiety can lead to a cycle of fear and increased heart rate, which may exacerbate your symptoms. Managing anxiety through therapy, medication, or lifestyle changes can help alleviate these symptoms.

3. Electrolyte Imbalances: Conditions affecting electrolyte levels (like potassium or magnesium) can lead to arrhythmias. Ensuring a balanced diet and staying hydrated is important.

4. Underlying Conditions: Conditions such as hyperthyroidism or anemia can also cause tachycardia. If you have not been screened for these, it may be worth discussing with your healthcare provider.

Infections like Endocarditis and Myocarditis
Regarding your question about endocarditis and myocarditis, these conditions are relatively rare in the general population but can occur, especially in individuals with certain risk factors. Endocarditis is an infection of the heart's inner lining, often associated with pre-existing heart conditions or intravenous drug use. Myocarditis, an inflammation of the heart muscle, can result from viral infections, autoimmune diseases, or exposure to certain toxins.

The likelihood of developing these conditions is generally low for healthy individuals without risk factors. However, if you have symptoms such as persistent fatigue, chest pain, or shortness of breath, it is crucial to seek medical attention.

Recommendations
1. Regular Check-ups: Continue to have regular follow-ups with your cardiologist to monitor your heart health, especially given your history of MVP and early contractions.

2. Manage Anxiety: Consider cognitive-behavioral therapy (CBT) or other forms of therapy to help manage anxiety. Mindfulness and relaxation techniques can also be beneficial.

3. Lifestyle Modifications: Regular exercise, a balanced diet, and adequate hydration can improve overall cardiovascular health. Avoid excessive caffeine and stimulants, as they can exacerbate anxiety and tachycardia.

4. Educate Yourself: While it is good to be informed, be cautious about the sources of information you rely on. Discuss any concerns with your healthcare provider to get accurate and personalized advice.

In summary, while rapid heartbeat can be concerning, especially when accompanied by anxiety, it is often manageable with appropriate medical care and lifestyle changes. Regular monitoring and open communication with your healthcare provider are key to ensuring your heart health remains stable.

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