Sudden Increased Heart Rate: Causes and Concerns

Sudden increase in heart rate?

Dear Dr.
He,
Hello.
In recent days, I have been experiencing cold symptoms (mild diarrhea, runny nose, chills, low-grade fever, headache, muscle aches, fatigue, and a scratchy throat with a cough).
I later consulted a traditional Chinese medicine practitioner, who advised me to take a packet of medicine before bed.
I took the medicine around 1 AM and went to sleep.
After about two hours, I suddenly felt a pronounced heartbeat and woke up.
I measured my blood pressure and heart rate; my blood pressure was within normal limits, but my heart rate was around 100 beats per minute, while my usual rate is about 70 beats per minute.
As of my inquiry, my heart rate has remained around 100 beats per minute for approximately 12 hours.
During the day, I do not feel any symptoms, but when lying down, I can clearly feel my heart racing.
I would like to ask Dr.
He the following questions:
1.
Does taking traditional Chinese medicine before bed cause a sudden increase in heart rate?
2.
Can a common cold lead to a sudden increase in heart rate?
3.
What adverse effects can a sudden increase in heart rate have on the body?
4.
Will a sudden increase in heart rate resolve on its own, or is medical attention and medication necessary?
Thank you, Dr.
He.

Axiang, 30~39 year old female. Ask Date: 2020/01/15

Dr. He Dongjin reply Cardiology

Hello, a common cold or taking cold medicine can lead to a sudden increase in heart rate.
An elevated heart rate typically does not have adverse effects on the body.
At night, when it is quiet, the sensation of a rapid heartbeat may feel more pronounced.
The increased heart rate usually resolves on its own, and you can simply monitor the situation without the need for immediate medical attention.
Changhua Hospital cares about your well-being.

Reply Date: 2020/01/15

More Info

Understanding sudden increases in heart rate, or tachycardia, can be complex, as it may arise from various physiological and psychological factors. In your case, you have experienced a noticeable increase in heart rate after taking traditional Chinese medicine while also dealing with cold symptoms. Let's address your questions one by one.

1. Can taking traditional Chinese medicine at night cause a sudden increase in heart rate?
Yes, certain herbal medications can have stimulating effects on the body, potentially leading to an increased heart rate. Ingredients in some traditional Chinese medicines may contain stimulants or compounds that can affect the autonomic nervous system, which regulates heart rate. Additionally, if the medicine contains caffeine or other stimulants, this could also contribute to an elevated heart rate.

2. Can a common cold cause a sudden increase in heart rate?
Yes, a common cold can lead to an increased heart rate. When your body is fighting off an infection, it can trigger a stress response, leading to the release of stress hormones like adrenaline. This can increase heart rate as part of the body's effort to enhance blood flow and oxygen delivery to vital organs. Symptoms such as fever, dehydration, and discomfort can also contribute to an elevated heart rate.

3. What adverse effects can a sudden increase in heart rate have on the body?
While a temporary increase in heart rate is often not dangerous, especially if you are otherwise healthy, prolonged tachycardia can lead to complications. It can strain the heart, potentially leading to symptoms such as chest pain, dizziness, or fainting. In some cases, it may exacerbate underlying heart conditions or lead to arrhythmias. If the heart rate remains elevated for an extended period, it is advisable to seek medical attention.

4. Will a sudden increase in heart rate resolve on its own, or is medical intervention necessary?
In many cases, a sudden increase in heart rate can resolve on its own, especially if it is related to temporary factors like stress, anxiety, or mild illness. However, if the elevated heart rate persists for more than a few hours, or if you experience additional symptoms such as chest pain, severe dizziness, or shortness of breath, it is crucial to seek medical attention. A healthcare provider can perform an evaluation, including an electrocardiogram (ECG) or other tests, to determine the underlying cause and appropriate treatment.

In summary, your elevated heart rate could be attributed to a combination of factors, including the traditional medicine you took and your body's response to the cold symptoms. While occasional increases in heart rate can be normal, persistent tachycardia warrants further investigation. It is always best to consult with a healthcare professional if you have concerns about your heart rate or overall health, especially if you notice significant changes or experience discomfort.

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