is fixed. Adenosine 50-200 mg/kg is the first agent. Magnesium (25-50 mg/kg up to 2
grams) may also be used.
Post operative junctional ectopic tachycardia seen in VSD repairs, insides Amiodarone,
calcium channel blockers or procainamide. SVT’s which cause hemodynamic instability
should be considered for cardioverters.
The first question regarding ventricular tachycardias should be “is it a shockable
rhythm?” Should be defibrillated, unstable VT should be defibrillated. Otherwise, use of
antiarrhythmia such as procainamide should be considered.
CONTRACTILITY
In the chronically failing heart, there therapeutic interventions that have been shown to
improve survival. These include:
RAAS Modulators
B Blockers
Implantative cardioverters/detibrillary
Cardiac Resynchromization therapy
Mechanical ventricular assist device
RAAS (Figure)