Paroxysmal supraventricular tachycardia

Paroxysmal supraventricular tachycardia is an episodic cardiac dysrhythmia originating at or above the atrioventricular node, characterized by a sudden onset and abrupt termination of a regular, rapid heart rate typically exceeding 150 to 250 beats per minute

Paroxysmal supraventricular tachycardia is an episodic cardiac dysrhythmia originating at or above the atrioventricular node, characterized by a sudden onset and abrupt termination of a regular, rapid heart rate typically exceeding 150 to 250 beats per minute It affects both pediatric and adult populations, frequently occurring in individuals without underlying structural heart disease Pathophysiologically, the condition is most commonly driven by reentrant electrical circuits—primarily atrioven...

Paroxysmal supraventricular tachycardia is an episodic cardiac dysrhythmia originating at or above the atrioventricular node, characterized by a sudden onset and abrupt termination of a regular, rapid heart rate typically exceeding 150 to 250 beats per minute Clinically, these paroxysms classically manifest as narrow-complex tachycardias presenting with acute palpitations, lightheadedness, dyspnea, and chest discomfort

It affects both pediatric and adult populations, frequently occurring in individuals without underlying structural heart disease

Pathophysiologically, the condition is most commonly driven by reentrant electrical circuits—primarily atrioventricular nodal reentrant tachycardia or atrioventricular reentrant tachycardia involving an accessory pathway—or, less frequently, enhanced automaticity from atrial tachycardia Clinically, these paroxysms classically manifest as narrow-complex tachycardias presenting with acute palpitations, lightheadedness, dyspnea, and chest discomfort

Pathophysiologically, the condition is most commonly driven by reentrant electrical circuits—primarily atrioventricular nodal reentrant tachycardia or atrioventricular reentrant tachycardia involving an accessory pathway—or, less frequently, enhanced automaticity from atrial tachycardia