It is easy to dismiss symptoms like shortness of breath, fatigue or a racing heartbeat as part of a busy life, getting older, or being out of shape. For some people, these symptoms come and go. For others, they gradually worsen over time.
While there are many possible explanations, these symptoms can sometimes be linked to underlying heart conditions, particularly problems involving the mitral valve or atrial fibrillation (AF). Understanding when these symptoms may need further assessment can help you make informed decisions about your health.
Common symptoms people often overlook
Many patients first notice subtle changes rather than sudden illness. These may include:
- Feeling short of breath during activities that previously felt easy
- Unusual tiredness or reduced exercise tolerance
- A sensation of the heart racing, fluttering or beating irregularly
- Reduced stamina or needing to stop and rest more often
- Difficulty lying flat due to breathlessness
Because these symptoms can develop gradually, they are often attributed to stress, ageing or reduced fitness. However, when symptoms persist, worsen, or interfere with daily life, it is reasonable to seek medical advice.
The role of the mitral valve
The mitral valve sits between the left atrium and left ventricle of the heart. It helps blood flow in the correct direction with each heartbeat. When the valve does not function properly, it can affect how efficiently the heart pumps blood.
One of the more common issues is mitral regurgitation, where the valve does not close fully and blood leaks backwards. This can lead to:
- Shortness of breath, particularly on exertion
- Fatigue due to reduced forward blood flow
- A feeling of reduced fitness or stamina
In some cases, mitral valve disease may not cause noticeable symptoms in the early stages. Over time, however, the heart can become strained, and symptoms may become more apparent.
Understanding atrial fibrillation (AF)
Atrial fibrillation is a type of irregular heart rhythm. Instead of beating in a steady, coordinated way, the upper chambers of the heart quiver or beat irregularly. This can affect how effectively the heart pumps blood.
Common symptoms of AF include:
- Palpitations or awareness of an irregular heartbeat
- Shortness of breath
- Fatigue or reduced exercise capacity
- Light-headedness in some cases
Some people are not aware they have AF until it is identified during a routine check or investigation for other symptoms.
AF is also associated with an increased risk of stroke, which is why early identification and management are important.
How mitral valve disease and AF are connected
Mitral valve problems and atrial fibrillation often occur together. When the mitral valve is not functioning normally, it can increase pressure within the left atrium. Over time, this can contribute to the development of AF.
Similarly, long-standing AF can affect how the heart functions overall and may coexist with valve disease.
Because of this relationship, it is not uncommon for both conditions to be considered together when planning treatment. In some cases, addressing both issues at the same time may be discussed as part of a broader management plan.
When should you seek medical advice?
Not every episode of fatigue or breathlessness is related to the heart. However, it may be appropriate to speak with your GP if you notice:
- Symptoms that are new, persistent, or worsening
- Reduced ability to perform your usual activities
- Ongoing palpitations or irregular heartbeat
- Breathlessness that seems disproportionate to exertion
Your GP may recommend initial tests such as an ECG, blood tests or an echocardiogram. If needed, you may be referred to a cardiologist or cardiac surgeon for further assessment.
What happens after diagnosis?
If a mitral valve condition or atrial fibrillation is identified, management depends on several factors, including the severity of the condition, your symptoms, and your overall health.
Treatment options may include:
- Monitoring and regular follow-up
- Medications to manage symptoms or reduce risk
- Procedures to restore or control heart rhythm in AF
- Surgical options in selected cases, particularly for mitral valve disease or persistent AF
For patients with mitral valve disease, repair of the valve is often considered where appropriate, as it aims to preserve the natural valve. In patients with AF, a range of treatment approaches may be discussed depending on the type and duration of the condition.
In some situations, particularly when both conditions are present, combined treatment approaches may be considered.
A balanced and individual approach
Every patient is different. The presence of symptoms does not necessarily mean surgery is required, and not all heart rhythm issues need invasive treatment.
A careful assessment helps determine the most appropriate next step. This typically involves reviewing imaging, understanding symptom impact, and considering the risks and benefits of different options.
The goal is to provide clarity around your diagnosis and ensure that any treatment plan is tailored to your individual circumstances.
Shortness of breath, fatigue and palpitations are common symptoms with many possible causes. In some cases, they may be linked to conditions such as mitral valve disease or atrial fibrillation.
If something does not feel quite right, or your symptoms are changing, it is reasonable to have this assessed. Early evaluation can provide reassurance, or help guide appropriate management if needed. If you have concerns about your symptoms, speaking with your GP is a sensible first step. They can help determine whether further investigation or referral is appropriate.