Monomorphic Ventricular Tachycardia (VT)

VT is almost certain if there is a broad complex tachycardia with structural heart disease (e.g. myocardial infarction). Specific ECG features strongly suggestive of VT are the QRS width (approx 200ms) and the ‘North-West axis’ (positive QRS in lead aVR). Evidence of ventriculo-atrial dissociation, capture or fusion beats are specific findings strongly suggestive of VT, but often not seen, including in this trace.