What is paroxysmal supraventricular tachycardia (PSVT)?

Paroxysmal supraventricular tachycardia (PSVT) is characterized as a rapid heart rhythm that starts and ends abruptly. This condition involves episodes of increased heart rate that can occur suddenly and typically resolve on their own or with treatment. The rapid rhythms originating above the ventricles, which may include atrial tissues or the atrioventricular node, can result in heart rates often exceeding 150 beats per minute.

PSVT can be triggered by various factors, such as stress, caffeine, or certain medications, and it is usually a temporary condition. Understanding the abrupt onset and termination of the arrhythmia is crucial for recognizing the symptoms and implementing appropriate management strategies. In contrast, other heart conditions described in the incorrect options involve different mechanisms and characteristics that do not align with the specific definition of PSVT.