Patient Care Technician (PCT) AAH Practice Exam

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What is the most common type of supraventricular tachycardia?

  1. Atrial fibrillation

  2. AV nodal Reentrant tachycardia (AVNRT)

  3. Ventricular Tachycardia

  4. Sinus Tachycardia

The correct answer is: AV nodal Reentrant tachycardia (AVNRT)

AV nodal reentrant tachycardia (AVNRT) is identified as the most common type of supraventricular tachycardia. This condition arises from a reentrant circuit that involves the atrioventricular (AV) node, which can easily disrupt the normal rhythm of the heart. AVNRT typically presents in younger individuals and can occur suddenly, often causing symptoms such as palpitations, dizziness, or even syncope. The prevalence of AVNRT is higher compared to other forms of supraventricular tachycardia due to the anatomical properties of the AV node and its capacity to facilitate reentrant circuits. This makes it a common diagnosis in emergency situations and among patients experiencing episodes of rapid heart rate. Understanding AVNRT helps in recognizing its clinical significance and treatment options, which may include vagal maneuvers, medication, or catheter ablation in recurrent cases. By recognizing AVNRT as the most prevalent type, healthcare providers can better anticipate and respond to situations encountered in patient care.