What causes a fast but weak heartbeat, and what should I do about it?

A fast but weak heartbeat may be caused by psychological factors, anemia, pericarditis, or other reasons. It can be improved through general treatments, medications, and other methods. The specific analysis is as follows:

1. Psychological factors

When the body is in a state of tension or anxiety, it releases certain hormones such as adrenaline and noradrenaline, which cause the heart to beat faster and more forcefully. Over time, this can affect cardiac function, leading to a fast but weak heartbeat. It's important to maintain a relaxed mood and avoid anxiety and depression.

2. Anemia

Anemia refers to insufficient quantity or quality of red blood cells in the blood. When red blood cell count or quality is inadequate, body tissues cannot receive sufficient oxygen and nutrients, resulting in a fast but weak heartbeat. Patients may take medications such as Ejiao Blood-enriching Granules or folic acid tablets under medical guidance to relieve symptoms.

3. Pericarditis

Pericarditis is a condition caused by inflammation of the pericardial tissue. When the pericardium is inflamed, it may lead to increased pericardial effusion, which compresses the heart and causes a fast but weak heartbeat. Patients may take medications such as prednisone tablets or ibuprofen sustained-release capsules under medical supervision to improve symptoms.

In addition to the above causes, a fast but weak heartbeat may also result from congenital heart disease, ischemic cardiomyopathy, heart failure, and other conditions. Since multiple factors can contribute to such symptoms, it is recommended to seek timely medical evaluation, complete relevant examinations, and receive targeted treatment accordingly.