BY:

MOHAMMED AHMED RAJAB

SVT any tachyarrhythmia that requires atrial and/or

atrioventricular (AV) nodal tissue for its initiation and

maintenance and

- Narrow-complex tachycardia

- Regular, rapid rhythm

▪ Depending on the site of origin of the dysrhythmia, SVTs may be classified as an atrial or AV tachyarrhythmia.

Atrial tachyarrhythmias

(1) Sinus Tachycardia.

(2) Inappropriate Sinus Tachycardia (IST).

(3) Sinus Nodal Reentrant Tachycardia (SNRT).

(4) Atrial Tachycardia.

(5) Multifocal Atrial Tachycardia.

(6) Atrial Flutter.

(7) Atrial Fibrillation.

AV tachyarrhythmias

(1) AV nodal reentrant tachycardia (AVNRT).

(2) AV reentrant tachycardia (AVRT).

(3) Junctional ectopic tachycardia (JET).

(4) Non-paroxysmal junctional tachycardia (NPJT).

▪ Usually in mild SVT being asymptomatic.

▪ S & S: ▪ Palpitation.

▪ Dizziness.

▪ Chest pain.

▪ Shortness of Breathing.

▪ Tiredness (Fatigue).

▪ Sweating.

▪ Nausea.

▪ Inherited Conditions.

▪ Structural Abnormalities.

▪ Coronary Artery Disease.

▪ COPD.

▪ Pulmonary Embolism.

▪ Hyperthyroidism.

▪ Alcoholism.

Electrocardiogram (ECG, EKG)—a test that records the heart’s activity by

measuring electrical currents through the heartmuscle

Holter monitor or event monitor—an ambulatory monitor to record your

heart rhythm that can be worn from 1-30 days to detect arrhythmias and

correlate symptoms with the heart rhythm

Exercise test—particularly if the symptoms occur during physical activity

Electrophysiology study—an invasive test where monitoring wires are

placed inside the heart and the heart's conduction system is tested directly

Cardiac catheterization —a tube-like instrument inserted into the heart

through a vein or artery (usually in the arm or leg) to detect problems with

the heart and its blood supply

▪ Acute setting▪ Vagal Maneuver.▪ Calcium channel blocker: terminate in 2 minutes.▪ DC cardioversion 10-50 J

▪ Long term management▪ Medication:▪ Digoxin.▪ Beta blocker.▪ Calcium channel blocker.