My heart keeps beating fast after catching a cold

It would be fine if a person only had a cough and a runny nose during a cold, but if the cold also had symptoms such as fever and dizziness, it would make people feel very uncomfortable. In addition, older people more or less have certain heart diseases, and some people with heart diseases find that when they have a cold, not only do they experience common cold symptoms, but their hearts also beat much faster than usual. So why does a person's heart always beat very fast after catching a cold?

(1) When you have a cold and fever, your heart blood flow increases, your heart rate speeds up, and your oxygen consumption increases. This can cause arrhythmias in patients whose heart compensation is already unstable and whose heart reserve capacity is low.

(2) When you have a cold and fever, although there is no obvious change in blood volume, the number of red blood cells flowing into the blood from the storage area increases, which increases the red blood cell mass and hematocrit, causing blood viscosity to increase, resulting in an increase in cardiac resistance load and causing arrhythmia.

(3) When you have a cold or fever, it has a direct impact on your heart function. For example, when you have a cold or fever, your body's arterial oxygen saturation decreases, and the heart works in a relatively hypoxic environment, which can easily induce arrhythmia.

(4) Direct effects of infection toxins. Bacterial damage to the myocardium or toxins released by bacteria outside the heart can damage the heart valves, pericardium, myocardial nerves, and coronary arteries. Neurotoxins such as diphtheria can damage nerves of the heart, nerves outside the heart, and the brain. These neurotoxins will affect the rhythm, conduction and repolarization of the heart, leading to the occurrence of arrhythmias.

(5) Viral myocarditis. The virus directly attacks the cardiac conduction system and can cause arrhythmia.

It is recommended that everyone should pay attention to developing good living habits in daily life and always maintain a positive attitude. If you find that you are unwell, you must seek medical attention immediately. If you just recovered from a cold and found that your heartbeat was faster, this may be because you have just recovered from a minor illness and your body has not yet fully recovered. Don't panic.