Parasystole is a medical term that refers to a type of heart rhythm abnormality. It is characterized by the presence of an extra, separate electrical source in the heart, which results in the occurrence of premature heartbeats. These premature beats originate from this extra source instead of the natural pacemaker of the heart.
In parasystole, the extra electrical source is typically located in one of the lower chambers of the heart, known as the ventricles. This distinguishes parasystole from other types of abnormal heart rhythms that originate in the upper chambers, called the atria.
The premature beats in parasystole appear irregularly and are not influenced by the normal electrical impulses from the natural pacemaker. As a result, they can occur independently of the heart's regular rhythm. While the heart's natural pacemaker continues to maintain the regular heartbeat, the extra beats from the additional source do not disrupt the normal rhythm, but rather coexist with it.
Parasystole is often considered a benign condition and does not typically require treatment. However, in some cases, it may cause symptoms such as palpitations, a sensation of skipping beats, or lightheadedness. Monitoring the heart's electrical activity through an electrocardiogram (ECG) can help identify the presence of parasystole and assess the need for any further intervention.
Overall, parasystole is a heart rhythm abnormality characterized by the occurrence of premature beats originating from an additional electrical source in the ventricles. While usually harmless, individuals experiencing symptoms should consult with a healthcare professional to determine the appropriate management.
