Irregular Heartbeats After Meals: What You Need to Know - Cardiology

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Irregular heartbeat?


Hello, Doctor.
I weigh 94 kg and am 178 cm tall, giving me a BMI of 29.6.
I have a family history of hypertension (around 140/85).
Recently, I have been actively losing weight, going from 100 kg to 94 kg, and my blood pressure has decreased to around 135/80.
I am making an effort to eat healthily, with a low-fat, low-sodium diet, reducing red meat, and limiting starches and sugars.
I have also transitioned from being a homebody to doing aerobic exercise every other day (cycling) for an hour.
I have been taking oral isotretinoin and traditional Chinese medicine to control my hypertension.

These conditions have been maintained for over two months, but in the past two weeks, I have suddenly experienced a significant increase in heart rate after meals.
I can feel my heart beating strongly, and it seems to race significantly, especially when I perform minor movements (like bending down to pick something up or standing up from a chair).
The heart rate measured by my blood pressure monitor is consistent with my pulse, indicating that the monitor is functioning correctly.
After meals, my heart rate averages around 120 beats per minute, with a maximum recorded rate of 130 beats per minute, which lasts for about an hour before returning to normal at around 80 beats per minute.

Sometimes, after sitting for a while, I feel quite breathless, even when I am not watching intense action videos or playing games, just doing homework or studying.
If I measure my blood pressure during this time, I notice my heart rate slows down, and the blood pressure readings are within normal ranges (120-130 / 70-80), but my heart rate is around 45 to 55 beats per minute, and I continue to feel increasingly breathless, which takes about an hour to settle down.

I went to the hospital for a standard ECG, which showed normal results, and the doctor said I am young and should not have any issues, then dismissed me.
Should I be concerned about anything, and do I need to visit another hospital or clinic for a follow-up? I look forward to your response.
Thank you!

Mr. Li, 20~29 year old female. Ask Date: 2022/11/13

Dr. He Dongjin reply Cardiology


Hello, it seems like you might be experiencing autonomic nervous system dysfunction.
It would be advisable to undergo a 24-hour Holter monitor test.
If everything is fine, consider visiting a psychosomatic medicine specialist.
Take care from Changhua Hospital.

Reply Date: 2022/11/13

More Info


Understanding irregular heartbeats after meals can be a complex issue, especially when considering your personal health history and current lifestyle changes. Based on the information you've provided, it seems you have made significant strides in managing your weight and blood pressure, which is commendable. However, the symptoms you are experiencing—such as a rapid heartbeat after meals, feelings of breathlessness, and variations in heart rate—are concerning and warrant further investigation.


Potential Causes of Irregular Heartbeats After Meals
1. Postprandial Tachycardia: After eating, the body directs more blood to the digestive system, which can lead to an increased heart rate. This is a normal physiological response, but in some individuals, it can become exaggerated, leading to noticeable palpitations.

2. Dietary Factors: The types of food consumed can influence heart rate. High-carbohydrate meals can lead to a rapid increase in blood sugar, which may trigger a compensatory increase in heart rate. Additionally, consuming large meals can put stress on the body, leading to increased heart rate and feelings of discomfort.

3. Anxiety and Stress: Given that you mentioned feeling breathless and having a rapid heart rate during seemingly low-stress activities, it’s possible that anxiety could be contributing to your symptoms. Anxiety can manifest physically, leading to increased heart rates and feelings of breathlessness.

4. Medication Effects: You mentioned taking oral isotretinoin and herbal medications for hypertension. Both can have side effects that might affect heart rate and blood pressure. It’s essential to review these medications with your healthcare provider to ensure they are not contributing to your symptoms.

5. Autonomic Nervous System Response: The autonomic nervous system regulates heart rate and blood pressure. After eating, the parasympathetic nervous system is activated, which can sometimes lead to fluctuations in heart rate, especially if there is an underlying sensitivity.


Recommendations
1. Monitor Symptoms: Keep a detailed diary of your symptoms, including when they occur, their duration, and any associated activities or foods. This information can be invaluable for your healthcare provider.

2. Dietary Adjustments: Consider smaller, more frequent meals rather than large meals to see if this alleviates your symptoms. Pay attention to the types of foods you consume, particularly those high in carbohydrates or sugars.

3. Hydration: Ensure you are adequately hydrated, as dehydration can exacerbate heart rate irregularities.

4. Stress Management: Incorporate stress-reducing techniques such as deep breathing exercises, meditation, or yoga into your routine. These practices can help regulate your heart rate and improve overall well-being.

5. Follow-Up with Healthcare Provider: Given your symptoms and the fact that they have persisted despite normal ECG results, it may be beneficial to seek a second opinion or return to your healthcare provider for further evaluation. You might request additional tests, such as a Holter monitor, which can provide a more comprehensive view of your heart's activity over 24 hours.

6. Consider a Cardiologist Consultation: If your symptoms continue or worsen, consulting a cardiologist may be necessary. They can perform more specialized tests to rule out any underlying cardiac conditions.


Conclusion
While your healthcare provider may have deemed your symptoms as non-concerning due to your age, it’s essential to advocate for your health. Irregular heartbeats, especially when accompanied by other symptoms like breathlessness, should not be ignored. By monitoring your symptoms, making dietary adjustments, managing stress, and seeking further medical advice, you can work towards understanding and alleviating your symptoms. Always prioritize open communication with your healthcare providers to ensure you receive the best care possible.

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