SVT

Supraventricular Tachycardia

1. BY:
MOHAMMED
AHMED RAJAB

2. SVTanytachyarrhythmiathatrequiresatrialand/or
atrioventricular(AV)nodaltissueforitsinitiationand
maintenanceand
-Narrow-complextachycardia
-Regular,rapidrhythm

3. ▪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).

4. ▪Usually in mild SVT being asymptomatic.
▪S & S:
▪Palpitation.
▪Dizziness.
▪Chest pain.
▪Shortness of Breathing.
▪Tiredness (Fatigue).
▪Sweating.
▪Nausea.

5. ▪Inherited Conditions.
▪Structural Abnormalities.
▪Coronary Artery Disease.
▪COPD.
▪Pulmonary Embolism.
▪Hyperthyroidism.
▪Alcoholism.

6. Electrocardiogram (ECG, EKG)—a test that records the heart’s activity by
measuring electrical currents through the heartmuscle
Holter monitor or event monitor—anambulatory monitor to record your
heartrhythm that can be worn from 1-30 days to detect arrhythmias and
correlate symptoms with the heartrhythm
Exercise test—particularly if the symptoms occur during physical activity
Electrophysiology study—an invasive test where monitoring wires are
placed inside the heartand 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 heartand its blood supply

13. ▪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.