Parasystole

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Parasystole

Parasystole (pronounced: para-sys-tole, from the Greek words "para" meaning beside, and "systole" meaning contraction) is a medical term used to describe an irregular heart rhythm that occurs due to the presence of an additional, independent pacemaker within the heart. This condition is often associated with cardiac arrhythmias and can lead to various complications if not properly managed.

Definition

Parasystole is a type of arrhythmia where an ectopic focus (an abnormal electrical impulse originating outside the normal conduction pathway of the heart) fires independently of the sinus node (the heart's natural pacemaker). This results in an irregular heart rhythm that can be seen on an electrocardiogram (ECG).

Causes

The exact cause of parasystole is not known. However, it is often associated with other heart conditions such as coronary artery disease, myocardial infarction, and cardiomyopathy. Certain medications and substances such as alcohol and caffeine can also trigger parasystole.

Symptoms

Symptoms of parasystole can vary depending on the severity of the condition. Some people may not experience any symptoms, while others may experience palpitations, dizziness, shortness of breath, or fainting. In severe cases, parasystole can lead to life-threatening complications such as cardiac arrest.

Treatment

Treatment for parasystole typically involves managing the underlying heart condition and may include medications, lifestyle changes, and in some cases, surgical procedures such as pacemaker implantation or catheter ablation.

Related Terms

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