If Pulse Rate is Low What Happens: What Is Dangerous Heart Rate & How to Manage It?

A low pulse rate, also called bradycardia, means the heart beats slower than normal. In some people, especially athletes, it may be normal and harmless. However, if the heart rate becomes too slow, it can reduce blood flow to the body and cause symptoms such as dizziness, fatigue, weakness, fainting, shortness of breath, or chest discomfort. Persistent low pulse rate may sometimes indicate an underlying heart or electrical conduction problem and should be medically evaluated if symptoms occur.

A heart rate of 120-140 bpm may be concerning if it occurs at rest, persists, or causes symptoms. There may be an underlying condition present. However, it is important to note that a heart rate that is too low can also be termed dangerous, which is below 60 bpm.

Generally, anything above 100 beats per minute for your heart rate is considered too high. 120 bpm during exercise is normal. Your maximum heart rate and your resting heart rate can be tested to check for your baseline and stress-related levels.

WHO emphasizes the importance of early detection and management of cardiovascular conditions.

A normal resting heart rate for most adults is between 60 to 100 beats per minute (bpm). The normal resting heart rate for most healthy adults is often cited as being between 55 and 85 bpm, which can vary based on individual factors.

Children and infants typically have higher resting heart rates compared to adults, with normal ranges varying by age. For well-trained athletes, a resting heart rate can be in the 40s or 50s bpm, which is considered normal for them.

A low pulse rate can be normal and safe for highly conditioned athletes who can pump more blood with each heartbeat due to fitness.

A 54 bpm heart rate may be normal in healthy adults, athletes, or during sleep. However, if a heart rate of 54 bpm causes dizziness or fainting, medical evaluation may be needed.

• Often normal in healthy adults, especially athletes and physically active individuals.

• May require medical evaluation if accompanied by symptoms such as dizziness, fatigue, fainting, or shortness of breath.

• Context matters more than the number alone—overall health, fitness level, medications, and symptoms are important factors in determining whether a 54 BPM heart rate is a concern.

A low pulse rate is often normal in healthy adults and athletes, while a high pulse rate is common during physical activity or stress. Both may require medical evaluation if they cause symptoms or occur without an obvious reason.

You may have Tachycardia which can lead to symptoms related to higher heart rate, inability to bring heart rate to normal levels, issues with breathing, etc.

There may be a health condition that can cause issues with a higher heart rate. You can get a complete health check-up done when you are suspecting that your heart rate may be too high.

Periods of high stress can impact your heart rate over time. You can reduce your stress levels by opting for stress management strategies, such as meditation, yoga, outdoor walking, etc.

You can have issues with your hormones, especially with hyperthyroidism, catecholamines, endothelin, gluco-corticosteroids, which can lead to higher heart rates.

Some individuals with high blood pressure can experience issues with a dangerous heart rate. You may have to monitor your medication and your heart rate regularly so that you're able to prevent symptoms.

Anaemia can lead to issues with a higher heart rate, which is why getting your iron levels tested regularly will be key. 

These are some of the core factors for a low heart rate level. You should always consult with a doctor before getting any medication or starting any new intervention. You can also get your heart rate regularly checked.

There are some medications that can have a side effect of a low heart rate.

In some cases, low thyroid hormone levels can impact the heart rate. Hypothyroidism and other issues with your hormones can have an impact on your heart rate.

In some cases sleep apnoea can lead to issues with low heart rate, as well as issues with proper recovery. You may experience dizziness, weakness, and issues with proper health management when there is sleep apnoea present.

There may be damage or other issues present within the heart valves, which may cause problems with heart rate management. Your heart may be beating too slow as a result of this. Bradycardia is one of the reasons why this may happen.

Bradycardia is often a sign of excellent physical fitness in athletes or normal during deep sleep. Most bradycardia does not automatically lead to heart failure. A resting heart rate consistently below 40 bpm is considered highly dangerous for individuals who are not elite athletes.

American Heart Association defines bradycardia as a resting heart rate below 60 beats per minute (BPM) in adults. Recommends medical evaluation if low pulse rate is accompanied by symptoms such as dizziness, fainting, fatigue, shortness of breath, or chest pain.

National Heart, Lung, and Blood Institute describes bradycardia as a heart rate that is slower than normal, generally below 60 BPM. It states that some people, especially athletes, may have a naturally low resting heart rate without health problems and advises evaluation when a slow pulse causes symptoms or affects blood flow to the brain and other organs.

Symptoms of low oxygen levels due to bradycardia may include dizziness, fainting, fatigue, shortness of breath, cognitive issues, and chest pain.

Causes of bradycardia include certain medications, heart tissue damage, and conditions such as hypothyroidism or sleep apnea. Some underlying reasons for Bradycardia may be prolonged use of beta-blockers, sleep apnea, heart disease, age, and electrolyte imbalance.

Bradycardia may result in chronic exhaustion, low blood pressure, and long-term strain on the heart if untreated. Borderline or occasional bradycardia may not require treatment, but persistent bradycardia should be evaluated by a healthcare provider to prevent complications.

Severe or prolonged bradycardia can be treated by adjusting or stopping medications that cause a slow heart rate, or by implanting a pacemaker to regulate the heart rate.

Prolonged bradycardia, or a consistently low heart rate, can lead to serious complications such as dizziness, fainting, and reduced blood flow to the brain.

Emergency medical care should be sought if a low pulse rate is accompanied by severe chest pain, trouble breathing, or sudden fainting.

A heart rate becomes more concerning when accompanied by symptoms such as chest pain, shortness of breath, dizziness, fainting, confusion, or severe weakness.

While it is important to know what is a dangerous heart rate, it is also vital to understand how to balance it. You should know how to bring your heart rate back to normal levels through the right strategies.

The American Heart Association recommends these steps: Get regular exercise. Ask your healthcare team about how much and what type of exercise is best for you.

You can treat the condition which can help in reducing the high heart rate issue. You may have issues with heart valve functioning, low blood pressure, fever, anaemia, dehydration, or other conditions that may require interventions.

You can improve your nutrition value by focusing on the right types of foods. You can have cooling foods as well as foods that are higher in omega-3s. These can help with heart rate regulation to some extent.

You can lower your overall stress levels to improve your heart rate levels. You can also focus on deep breathing to help improve your cardiovascular functioning. Activities, such as meditation, yoga, etc. can help significantly. 

You can remove alcohol, smoking, and other habits to reduce toxins exposure, as well as enhance sleep and recovery. These can positively impact the heart rate significantly, giving you more balance in your overall functioning.

If you have a hormonal condition or a general issue with hormonal management, then getting that treated can help your heart rate as well. You can get a complete body check-up done to know more about your levels. 

A normal resting heartbeat ranges from 60 to 100 bpm. As people age, average maximum heart rate falls. A rapid heart rate can prevent the heart from adequately filling up with blood in between beats. If a low heart rate is accompanied by symptoms like shortness of breath or dizziness, it may require immediate medical attention to prevent complications.

MyDiagnostics offers heart screening packages that may include ECG, TMT, and echocardiography, depending on physician recommendations.