arrythmias

Arrhythmias are irregularities in the heart's rhythm, meaning the heart may beat too fast, too slow, or irregularly. They occur when the electrical signals that coordinate heartbeats malfunction, leading to inefficient blood circulation. Common types include atrial fibrillation (rapid, irregular beating in the upper chambers), bradycardia (slow heartbeat), and tachycardia (fast heartbeat). Some arrhythmias are harmless, while others can cause symptoms like dizziness, shortness of breath, or increase the risk of stroke or heart failure. Diagnosis involves ECG testing, and management may include lifestyle changes, medications, or procedures like ablation.