A premature ventricular contraction originates in the ventricle, and this must be differentiated from an impulse that originates above the ventricle (i.e. it is supraventricular in origin) and conducts with a delay (i.e. a wide complex, it is aberrantly conducted).
[Disease name] must be differentiated from other diseases that cause [clinical feature 1], [clinical feature 2], and [clinical feature 3], such as [differential dx1], [differential dx2], and [differential dx3].
OR
[Disease name] must be differentiated from [[differential dx1], [differential dx2], and [differential dx3].
Premature ventricular contraction differential diagnosis
Premature atrial contraction differential diagnosis
Third degree AV block differential diagnosis
Ventricular fibrillation differential diagnosis
Accelerated idioventricular rhythm differential diagnosis
Wide complex tachycardia differential diagnosis
Short QT syndrome differential diagnosis
Pulseless ventricular tachycardia differential diagnosis