tachyarytmiach

Tachyarrhythmias are a group of heart rhythm disorders characterized by a heart rate that is too fast. The normal resting heart rate for adults is typically between 60 and 100 beats per minute. When the heart beats faster than this consistently, it is considered a tachycardia. These fast heart rhythms can originate in either the upper chambers of the heart (atria) or the lower chambers (ventricles).

Causes of tachyarrhythmias are diverse and can include factors like underlying heart disease, electrolyte imbalances, hormonal imbalances such as hyperthyroidism, certain medications, stimulant use (including caffeine and illicit drugs), stress, fever, and exercise. In some cases, the cause may be unknown.

Symptoms can vary widely and may include palpitations, a racing heartbeat, shortness of breath, dizziness, chest pain, or fainting (syncope). Some individuals may experience no noticeable symptoms.

Diagnosis often involves an electrocardiogram (ECG or EKG) to record the heart's electrical activity. Holter monitors or event recorders may be used for longer-term monitoring if the arrhythmia is intermittent. Blood tests may be conducted to check for underlying conditions like thyroid problems or electrolyte imbalances.

Treatment depends on the specific type of tachyarrhythmia, its severity, and the individual's overall health. Options can include lifestyle modifications, medications to control heart rate or rhythm, electrical cardioversion (a shock to reset the heart rhythm), or catheter ablation (a procedure to destroy abnormal heart tissue causing the arrhythmia).