Figure legends
Figure 1 Reported drugs with potential for QT interval prolongation that patients were taking stratified by drug class. Number in the brackets denotes number of individual drugs. AAD = anti-arrhythmic drugs; DPM = diphenhydramine; MCP = metoclopramide.
Figure 2 Bland Altman plots comparing mean QTc intervals of the limb and chest leads. Horizontal line indicates mean difference.
Figure 3 T-wave morphologies in each individual lead and cumulative for limb and chest leads. Number In the brackets denotes percentages.
Figure 4 12-lead ECG showing different T-wave morphologies over individual leads in the same patient.