tachyarytmii

Tachyarrhythmia refers to a heart rhythm that is too fast. The normal resting heart rate for an adult is typically between 60 and 100 beats per minute. When the heart rate consistently exceeds 100 beats per minute at rest, it is considered a tachyarrhythmia. These rapid heart rhythms can originate from either the upper chambers of the heart (the atria) or the lower chambers (the ventricles).

There are several types of tachyarrhythmias, categorized by their origin and specific pattern. Atrial tachyarrhythmias include conditions like atrial fibrillation, atrial flutter, and supraventricular tachycardia (SVT). Ventricular tachyarrhythmias, which are generally more serious, include ventricular tachycardia (VT) and ventricular fibrillation (VF).

Symptoms of tachyarrhythmia can vary depending on the type, severity, and whether the heart is effectively pumping blood. Common symptoms may include palpitations, a racing heartbeat, dizziness, shortness of breath, chest pain, and fainting. In some cases, particularly with ventricular fibrillation, a tachyarrhythmia can be life-threatening and lead to sudden cardiac arrest.

The causes of tachyarrhythmias are diverse and can include underlying heart disease, electrolyte imbalances, thyroid problems, certain medications, stress, and congenital heart defects. Diagnosis often involves an electrocardiogram (ECG) to record the heart's electrical activity. Treatment strategies aim to slow the heart rate, restore a normal rhythm, and prevent complications. These may include medications, electrical cardioversion, or in some instances, catheter ablation or pacemaker implantation.