What is premature contraction? What are its dangers and clinical manifestations?
Premature Contractions: Premature contractions are a common type of arrhythmia that can occur in young people without organic heart disease as well as in patients with severe heart disease.
What are Premature Contractions? Premature contractions are arrhythmias caused by increased excitability of ectopic pacemakers or the formation of reentry mechanisms within the heart. Premature contractions are classified into ventricular premature contractions, atrial premature contractions, and junctional premature contractions.
What are the dangers of premature contractions? Our hearts beat rhythmically every day, including contraction and relaxation. Contraction ejects blood from the heart, supplying nutrients to all organs of the body; relaxation allows sufficient time for blood to return to the heart, filling it so that the heart can eject enough blood when it contracts again.
Premature contractions interfere with the heart's relaxation time, causing it to relax too quickly. This results in insufficient blood returning to the heart, and the heart cannot eject enough blood when it contracts again, leading to clinical manifestations such as organ ischemia.
Premature contractions were previously underestimated, but now it's believed that prolonged premature contractions can lead to heart failure, cardiomyopathy, and even sudden death.
What are the symptoms of premature contractions? Premature contractions can manifest in many ways, with patients often reporting:
1. A feeling that the heart is about to jump out of the throat;
2. A sudden, sharp pain in the heart;
3. Chest tightness and chest pain;
4. Fatigue.
When the heart is functioning normally, we don't feel anything, just like we don't notice our stomach working after eating. If we suddenly feel our heart working, it indicates a problem with our heart.
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