what is the difference between monomorphic and polymorphic v tach?
Ventricular tachycardia should be described by type (monomorphic or polymorphic), duration (sustained or non-sustained) and heart rate — i.e. monomorphic VT non-sustained at a heart rate of 220 bpm or sustained polymorphic VT at a heart rate of 250 bpm. ... Polymorphic VT is best treated with intravenous magnesium.