Supraventricular tachycardia

• re-entrant pathway associated with AV node

• generally paroxysmal

• regular rhythm with normal QRS duration

• 1:1 AV conduction

Pre-excitation (Wolf-parkinson-white)

• atrial impulses conducted via accessory pathway

• short PR interval

• QRS prolongation and delta wave

• Risk of cardiac arest and sudden death

  • rapid ventricular response due to atrial tachycardia/AF

• consider ablation therapy

Long QT

• treatment:

  • avoid swimming

  • avoid medications that prolongs QT

    • erythromycin

    • antihistamine

    • antipsychotics

    • cisapride

  • beta blockade

  • implantable cardioverter defibrillators