Managing Fast Heart Rate: When to Seek Medical Attention?

Heart rate issues

Hello, Doctor.
I am a patient with hyperthyroidism and currently manage it with regular medication.
Previously, I experienced episodes of rapid heartbeat, exceeding 130 beats per minute, which made me feel extremely uncomfortable and almost faint.
I have since stopped consuming caffeine and maintain a routine of jogging for 30 minutes to an hour each day.
My cardiovascular function seems to have improved, with my average heart rate now between 65 and 80 beats per minute.
However, a few days ago, due to stress and insomnia, I experienced another episode of a heart rate of 130, but the discomfort was significantly less than before.
I was even able to ride my bike to seek medical attention.

I would like to ask, regarding the burden of a rapid heartbeat on the heart, is it primarily based on my ability to tolerate it? If my heart rate is high but I do not experience significant discomfort, is it necessary to seek medical attention immediately? If I do not have severe discomfort, does that mean my heart is less likely to experience issues such as heart failure? Additionally, does an occasional rapid heartbeat exceeding 120 beats per minute pose a risk of damage to the heart? Thank you for your response, Doctor.

Niming, 40~49 year old female. Ask Date: 2021/06/19

Dr. Wu Xueming reply Cardiology

If the heart rate frequently exceeds 100 beats per minute while at rest, it is considered tachycardia over the long term.
It is advisable to consider adjusting the medication for hyperthyroidism.

Reply Date: 2021/06/19

More Info

Managing a fast heart rate, or tachycardia, can be a complex issue, especially for individuals with pre-existing conditions such as hyperthyroidism. It’s essential to understand when to seek medical attention and how to manage symptoms effectively.

Firstly, it’s important to recognize that a heart rate exceeding 100 beats per minute (bpm) is generally considered tachycardia. However, the significance of this condition can vary greatly depending on the individual’s overall health, underlying medical conditions, and the presence of symptoms. In your case, as a hyperthyroid patient, your heart rate can be influenced by your thyroid hormone levels, which can lead to episodes of increased heart rate.

From your description, it seems that you have made significant lifestyle changes, such as eliminating caffeine and incorporating regular exercise, which can positively impact your heart health. Maintaining a heart rate between 65-80 bpm during rest is generally considered normal and healthy. However, episodes of increased heart rate, such as reaching 130 bpm, can still occur, particularly in response to stress or anxiety, as you mentioned.

When assessing whether to seek medical attention during episodes of tachycardia, consider the following factors:
1. Symptoms: If you experience additional symptoms such as chest pain, shortness of breath, dizziness, or fainting, it is crucial to seek immediate medical attention. These symptoms may indicate a more serious underlying condition that requires prompt evaluation.

2. Duration of Tachycardia: If your heart rate remains elevated for an extended period (e.g., more than a few minutes) without returning to baseline, it is advisable to consult a healthcare professional. Persistent tachycardia can strain the heart and potentially lead to complications.

3. Underlying Conditions: Given your history of hyperthyroidism, it’s essential to monitor your thyroid levels regularly. Uncontrolled hyperthyroidism can lead to sustained tachycardia, increasing the risk of heart complications over time.

4. Personal Tolerance: As you noted, your ability to tolerate episodes of increased heart rate has improved. However, it’s essential to listen to your body. If you feel uncomfortable or unwell during these episodes, it’s better to err on the side of caution and seek medical advice.

5. Impact on Heart Health: Occasional episodes of tachycardia, especially if they are brief and not accompanied by severe symptoms, may not cause significant harm to a healthy heart. However, frequent or prolonged episodes can lead to complications such as heart failure or other cardiovascular issues, particularly in individuals with existing heart conditions.

In summary, while occasional episodes of tachycardia may not pose an immediate threat, it’s essential to monitor your symptoms and overall health closely. If you experience significant discomfort or if your heart rate remains elevated for an extended period, seeking medical attention is warranted. Regular follow-ups with your healthcare provider to manage your hyperthyroidism and monitor your heart health are also crucial. Maintaining a healthy lifestyle, managing stress, and being aware of your body’s signals will help you navigate these episodes more effectively.

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