Irregular Heartbeats and Nausea: When to Seek Help - Cardiology

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Irregular heartbeat, nausea, and dizziness?


Hello Doctor: About a year ago, I suddenly experienced chest tightness, shortness of breath, and cold sweats in the middle of the night while watching a show.
Lying down and resting for 20 minutes alleviated the discomfort, but since that day, I often feel irregular heartbeats, easily get breathless, and feel tightness in my chest.
I underwent a 24-hour Holter monitor test, and the doctor informed me that my slowest heart rate was about 40 bpm (during deep sleep) and the fastest was 150 bpm (after climbing two flights of stairs), with approximately 1000 irregular beats.
The doctor reassured me that at 25 years old, there was no need for concern, and advised me to take medication if I felt uncomfortable.
Since the doctor said there was no major issue, I decided to endure the discomfort without taking medication and started supplementing with fish oil and Coenzyme Q10, which seemed to reduce the irregular heartbeats somewhat.
Recently, due to polycystic ovary syndrome causing hair loss, my gynecologist prescribed metformin.
During the first month of taking it, I experienced nausea and vomiting almost every day.
After the second month, the side effects eased, and I only felt nauseous when I was sleep-deprived.
Currently, I am in the fifth month of taking it, but this past week, I have started to feel nauseous and have experienced irregular heartbeats, shortness of breath, and chest tightness at a frequency similar to before I began taking the supplements.
Additionally, I feel a significant dizziness whenever I look up, accompanied by a sensation of blood rushing to my head, which exacerbates my nausea.
I consulted my gynecologist, who suggested that my recent severe discomfort is likely not caused by metformin.
I have also had my thyroid checked due to the hair loss issue, with TSH levels at 6 and Free T4 at 1.12.

I would like to ask the doctor if I should return to a cardiologist regarding my symptoms.
Thank you for taking the time to respond.
P.S.
I am 160 cm tall and weigh 50 kg.
When I go to the hospital to pick up metformin, I usually check my blood pressure, which has been around 118/78 mmHg, with a pulse of approximately 93 bpm.

Miss Yang, 20~29 year old female. Ask Date: 2019/05/17

Dr. He Dongjin reply Cardiology


Hello, any discomfort in your body can lead to irregular heartbeat, shortness of breath, and tightness in the chest.
It is advisable to consult an endocrinologist to check for metabolic issues.
Consider discontinuing METFORMIN for now and let the endocrinologist adjust your medication first.
Changhua Hospital cares about your well-being.

Reply Date: 2019/05/17

More Info


When dealing with irregular heartbeats and accompanying symptoms such as nausea, it is crucial to understand the potential underlying causes and when to seek further medical evaluation. Based on your description, it seems you have experienced a range of symptoms over the past year, including episodes of chest tightness, shortness of breath, cold sweats, and irregular heartbeats. These symptoms can be concerning, especially when they are recurrent or associated with significant discomfort.


Understanding Your Symptoms
1. Irregular Heartbeats (Arrhythmias): The heart's rhythm can be affected by various factors, including stress, hormonal changes, and underlying medical conditions. In your case, the irregular heartbeat you experienced, with a slow rate of 40 beats per minute during sleep and a rapid rate of 150 beats per minute during exertion, suggests that your heart is responding to different stimuli. While your doctor indicated that this is not a major concern given your age, it is essential to monitor these irregularities, especially if they are accompanied by other symptoms.

2. Nausea and Vomiting: The nausea you are experiencing, particularly after starting Metformin for polycystic ovary syndrome (PCOS), can be a common side effect of this medication. However, the recurrence of nausea, especially when accompanied by irregular heartbeats and dizziness, warrants further investigation. It is essential to differentiate whether these symptoms are related to the medication, your heart condition, or another underlying issue.

3. Dizziness and Lightheadedness: The sensation of dizziness, particularly when you tilt your head or change positions, can indicate a drop in blood pressure or inadequate blood flow to the brain. This can be exacerbated by irregular heartbeats, which may affect the heart's ability to pump blood effectively.


When to Seek Help
Given your symptoms and their recurrence, it is advisable to consult with a cardiologist. Here are some specific reasons to seek further evaluation:
- Persistent Symptoms: If you continue to experience irregular heartbeats, nausea, and dizziness, especially if they are worsening or occurring more frequently, it is essential to have a thorough evaluation.
- Changes in Symptoms: Any new or worsening symptoms, such as increased frequency of palpitations, significant changes in heart rate, or new episodes of chest pain, should prompt immediate medical attention.

- Medication Side Effects: Since you are experiencing nausea and vomiting after starting Metformin, it is crucial to discuss these side effects with your healthcare provider. They may consider adjusting your medication or exploring alternative treatments.

- Thyroid Function: Your TSH level of 6 indicates potential hypothyroidism, which can contribute to symptoms like fatigue, weight changes, and irregular heart rhythms. It may be beneficial to follow up on this with your primary care physician or an endocrinologist.


Conclusion
In summary, while your initial evaluation may not have indicated a severe issue, the persistence and recurrence of your symptoms suggest that further investigation is warranted. A follow-up with a cardiologist can help assess your heart's function, evaluate the irregularities in your heartbeat, and determine if any additional testing, such as an echocardiogram or Holter monitor, is necessary. Additionally, addressing the side effects of Metformin and monitoring your thyroid function will be crucial in managing your overall health. Always trust your instincts; if you feel that something is not right, seeking medical advice is the best course of action.

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