CRT cardiac resynchronisation therapy, IVCD intraventricular conduction delay, LBBB left bundle branch block, LVED left ventricular end-diastolic volume, RBBB right bundle branch block.^* Figures corrected to body surface area.

Table 2 Post hoc model of the probability of lead delivery predicted from the basal septal scar burden expressed as a percentage of total basal septal myocardium.