Atrioventricular nodal reentry tachycardia | Medical Writing Assistance via SciEditHub Scientific Editors
Atrioventricular nodal reentry tachycardia (AVNRT) is the most common type of supraventricular tachycardia. People with AVNRT have episodes of an irregularly fast heartbeat (more than 100 beats per minute) that often start and end suddenly. The episodes are due to an extra pathway — called a reentrant circuit — located in or near the AV node that causes the heart to beat prematurely. AVNRT tends to occur more often in young women, but it can affect anyone. Diagnosis Tests and procedures used to diagnose AVNRT may include: Blood tests to check thyroid function, heart disease, or other conditions that may trigger an irregular heartbeat Electrocardiogram (ECG) measures the electrical activity of the heart and measures the timing and duration of each heartbeat Holter monitor , which is a portable ECG device designed to record the heart's activity as you perform everyday activities Echocardiogram, which uses sound waves to produce images of the heart's size, structure,