Why Do I Feel Short of Breath While Walking? Heart Health

Shortness of breath while walking?

Hello Doctor: For the past month, I have been experiencing chest tightness, shortness of breath, and a faster heartbeat.
Last week, I visited a cardiologist, and after blood tests, a resting electrocardiogram, X-rays, and an ultrasound, the only notable findings were a slightly elevated heart rate on the ECG and mild mitral valve prolapse on the ultrasound.
The doctor prescribed me Inderal, which has helped to slightly reduce my heart rate.
The doctor mentioned that my symptoms might be related to autonomic nervous system issues due to anxiety.
However, in the past few days, I have noticed that even with slight movements, I get tired quickly while walking.
Although I don't experience significant shortness of breath, I do feel some discomfort and tightness in my chest.
I didn't mention this to the doctor during my visit.
I read online that shortness of breath while walking could indicate heart failure.
Since the doctor didn't mention any issues during the ultrasound, does that mean I likely don't have such a problem? Additionally, I have a cold this week; could this be related to autonomic nervous system dysfunction? Should I see a cardiologist or a pulmonologist again?

Niming, 20~29 year old female. Ask Date: 2021/04/22

Dr. He Dongjin reply Cardiology

Hello, I have a cold and I'm experiencing shortness of breath.
My stamina has decreased and I get tired easily.
I had an ultrasound, but the doctor didn't mention anything significant, so it should be normal.
It's unlikely to be heart failure.
Inderal can help with chest tightness, difficulty breathing, and rapid heartbeat; you can take it as needed.
Some people may feel tired after taking it, so you can monitor your condition and return for a follow-up.
Take care, Changhua Hospital is concerned about you.

Reply Date: 2021/04/22

More Info

Feeling short of breath while walking can be concerning, especially when accompanied by symptoms like chest tightness and rapid heartbeat. Based on your description, it seems that you have undergone several tests, including blood tests, echocardiograms, and electrocardiograms, which have not indicated any significant heart issues apart from a mild mitral valve prolapse. This is a common condition and often does not lead to serious complications.

Your symptoms could be attributed to a combination of factors, including anxiety, deconditioning, and possibly the effects of a recent respiratory infection. Anxiety can significantly impact your autonomic nervous system, leading to symptoms like palpitations and a sensation of breathlessness. When you are anxious, your body may react as if it is under stress, which can cause your heart rate to increase and your breathing to become more rapid or shallow.

Deconditioning is another important factor to consider. If you have not been physically active for a while, your cardiovascular fitness may decline, making even moderate activities like walking feel more strenuous. This can lead to feelings of fatigue and shortness of breath, especially if you are not accustomed to exertion. Gradually increasing your activity level can help improve your endurance and overall cardiovascular health.

Additionally, respiratory infections, such as the cold you mentioned, can temporarily affect your lung function and lead to feelings of breathlessness. Even after the infection has resolved, you may still experience lingering symptoms as your body recovers.

Given your history and the current symptoms, it may be beneficial to follow up with your healthcare provider. You might consider discussing your symptoms in more detail, including the recent cold and any anxiety you may be experiencing. It could also be helpful to explore whether a referral to a pulmonologist (lung specialist) is warranted, especially if your symptoms persist or worsen.

In the meantime, here are some strategies you can implement to help manage your symptoms:
1. Gradual Exercise: Start with light activities, such as walking at a comfortable pace, and gradually increase the duration and intensity as your fitness improves. Aim for at least 150 minutes of moderate aerobic activity each week, as recommended by health guidelines.

2. Breathing Exercises: Practice deep breathing techniques to help manage anxiety and improve your lung capacity. Techniques such as diaphragmatic breathing or pursed-lip breathing can be beneficial.

3. Stress Management: Engage in relaxation techniques such as yoga, meditation, or mindfulness to help reduce anxiety levels.

4. Monitor Symptoms: Keep a diary of your symptoms, noting when they occur and any potential triggers. This can provide valuable information for your healthcare provider.

5. Stay Hydrated and Nourished: Ensure you are drinking enough fluids and eating a balanced diet to support your overall health and recovery.

6. Follow-Up Care: If your symptoms do not improve or if you experience new symptoms, such as increased chest pain, severe shortness of breath, or dizziness, seek medical attention promptly.

In summary, while your symptoms may be concerning, they are likely multifactorial, involving anxiety, deconditioning, and possibly residual effects from a recent illness. With appropriate management and follow-up care, you can work towards improving your symptoms and overall health.

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