What causes junctional ectopic tachycardia?

Junctional ectopic tachycardia (JET) is a rare syndrome of the heart that manifests in patients recovering from heart surgery. It is characterized by cardiac arrhythmia, or irregular beating of the heart, caused by abnormal conduction from or through the atrioventricular node (AV node).

How is junctional ectopic tachycardia treated?

Congenital junctional ectopic tachycardia (JET) is usually initially treated with antiarrhythmic therapy, with the choice of medication guided by the degree of coexisting ventricular dysfunction. Congenital JET has been successfully controlled with amiodarone, propafenone, or cautious combinations of both medications.

What causes atrial tachycardia?

Causes include: A “stretched” atrium resulting from high blood pressure (hypertension) or from cardiomyopathy. A previous heart attack. Excessive use of alcohol, cocaine and other stimulants.

Can hypovolemia cause SVT?

Sinus tachycardia: Strictly taking prevalence into account, this is the most common SVT. Multiple triggers can lead to sinus tachycardia, from simple stress, hypovolemia (dehydration, blood loss, sepsis), fever, stimulants (caffeine, cocaine, methamphetamine), or the stress of any severe illness.

Is junctional tachycardia same as junctional ectopic tachycardia?

Tachyarrhythmias originating in the atrioventricular (AV) node and AV junction including the bundle of His complex (BH) are called junctional tachycardia (JT) or junctional ectopic tachycardia (JET).

Is junctional tachycardia life threatening?

Junctional ectopic tachycardia is not uncommon after open heart operations in children and may be lethal. Its genesis, diagnosis, and treatment are now well enough understood to allow successful treatment of nearly all patients.

What is junctional tachycardia?

Junctional tachycardia is a form of supraventricular tachycardia, a type of racing pulse caused by a problem in the area between the upper and lower chambers of your heart. It’s known as the atrioventricular node, or AV node.

Which of the following is the most common cause of junctional tachycardia?

Common causes include digitalis intoxication, acute myocardial infarction (MI), intracardiac surgery, or myocarditis. Only in rare instances does the cause of the arrhythmia remain unexplained.

What is a junctional tachycardia?

What could be an underlying cause of junctional rhythm?

Junctional rhythm can be due to hypokalemia, MI (usually inferior), cardiac surgery, digitalis toxicity (rare today), sinus node dysfunction, or after ablation for AV node reentrant tachycardia. It can be caused by necessary medications (e.g., β-adrenergic blockers, verapamil, digitalis, sotalol, amiodarone).

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