What does premature aging mean?

In the elderly, premature atrial contraction refers to an early and irregular contraction of the heart during normal beating.

Under normal circumstances, the pacemaker of the heart is the sinoatrial node, which generates electrical signals to drive the heart to contract and beat. There is a fixed interval between each heartbeat, which becomes the heart rhythm. However, in the case of premature atrial contraction, a certain part of the heart will generate electrical signals in advance, causing the atria to contract prematurely, thus disrupting the original rhythm. There are many reasons for premature atrial contraction in the elderly, which may be related to factors such as aging, drug side effects, mental stress and heart disease. Symptoms include palpitations, chest distress, shortness of breath, fatigue, etc.