Premature supraventricular beat (PSVB) is a medical term used to describe an abnormal heart rhythm characterized by premature contractions occurring above the ventricles of the heart, in either the atria or the atrioventricular (AV) node. Also known as premature atrial contractions or premature junctional contractions, PSVBs can disrupt the normal electrical conduction pathway of the heart, leading to irregular heartbeats.
During PSVBs, the heart contracts earlier than expected, causing a sensation of a skipped heartbeat or an extra beat. While PSVBs are generally harmless and often go unnoticed, they can occasionally cause symptoms such as palpitations, rapid or irregular heartbeats, dizziness, or shortness of breath.
The exact cause of PSVBs is often unknown; however, certain factors can trigger their occurrence, including stress, caffeine, nicotine, alcohol, certain medications, and underlying heart conditions. Diagnosis of PSVBs is typically confirmed by electrocardiography (ECG), a non-invasive test that records the electrical activity of the heart.
Treatment for PSVBs depends on the severity of symptoms and the underlying cause. In most cases, no treatment is needed, and lifestyle modifications such as reducing stress, avoiding triggers, and maintaining a healthy lifestyle are sufficient. However, if PSVBs are persistent, causing significant symptoms, or associated with heart disease, medications or other interventions like catheter ablation may be recommended to control the arrhythmia and prevent complications.
Overall, PSVBs are a relatively common arrhythmia characterized by premature contractions in the upper chambers of the heart, which can lead to irregular heartbeats. While generally harmless, it is important to consult a healthcare professional if PSVBs persist or if they
