Is Rapid Heartbeat a Sign of Arrhythmia? Your Symptoms

Is a rapid heartbeat considered an arrhythmia?

Hello, today during physical education class at school, after running, my heart was beating very fast, and I could clearly feel my heart pounding strongly.
After about twenty minutes, I went to the health room to check my blood pressure, and the device showed a heart rate of 121 beats per minute.
I rested in the health room for about fifty minutes, and although it decreased, it was still above 100.
Later, I visited an external clinic where the doctor prescribed me antiarrhythmic medication but did not perform an electrocardiogram.
After about an hour, my heart rate dropped below 100, but I have never experienced this before.
Could you please tell me what kind of problem this might indicate and whether I need to go to the hospital for a detailed examination?

Xiao Jie, 10~19 year old female. Ask Date: 2015/12/16

Dr. He Dongjin reply Cardiology

Hello, if you are feeling uneasy, it is advisable to visit the hospital for an electrocardiogram (ECG) examination.
Changhua Hospital cares about you.

Reply Date: 2015/12/16

More Info

Experiencing a rapid heartbeat, especially during physical activity, can be concerning and may lead one to wonder if it indicates a more serious underlying issue, such as arrhythmia. In your case, it seems that you experienced a significant increase in heart rate during physical exertion, which is not uncommon. However, the persistence of a rapid heartbeat even after resting raises some questions that merit further exploration.

Firstly, it's important to understand that a rapid heartbeat, or tachycardia, can occur for various reasons. During exercise, it is normal for your heart rate to increase as your body demands more oxygen. However, if your heart rate remains elevated after you have stopped exercising, it could indicate an abnormal response. Factors that can contribute to a sustained elevated heart rate include dehydration, anxiety, stress, caffeine intake, or even certain medications. In some cases, it may also be a sign of an underlying heart condition, such as arrhythmia.

Arrhythmias are irregular heartbeats that can manifest as a racing heart, fluttering, or even a feeling of skipped beats. They can be caused by various factors, including electrolyte imbalances, heart disease, or structural abnormalities in the heart. While some arrhythmias are benign and may not require treatment, others can be serious and necessitate medical intervention.

Given that you experienced a heart rate of 121 beats per minute while at rest, and it took a significant amount of time for your heart rate to return to normal, it is advisable to follow up with a healthcare provider for a thorough evaluation. A healthcare professional may recommend an electrocardiogram (ECG or EKG) to assess your heart's electrical activity and determine if there are any arrhythmias present. This test can provide valuable information about the rhythm and rate of your heartbeat, helping to identify any abnormalities.

Additionally, it may be beneficial to monitor your heart rate and symptoms over time. Keeping a record of when your heart rate increases, any associated symptoms (such as dizziness, chest pain, or shortness of breath), and any potential triggers (like stress or caffeine) can provide useful information for your healthcare provider.

In the meantime, consider adopting some lifestyle modifications that can help manage your heart rate. Staying well-hydrated, reducing caffeine and alcohol intake, practicing relaxation techniques such as deep breathing or meditation, and ensuring you get adequate rest can all contribute to better heart health.

In summary, while a rapid heartbeat during exercise can be normal, the persistence of an elevated heart rate after exertion warrants further investigation. It is essential to consult with a healthcare provider who can perform the necessary evaluations and guide you on the appropriate next steps. Your health is paramount, and addressing these symptoms early can help ensure that any potential issues are managed effectively.

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