u/GoldCategory3501

Using both ECGsource and O'Keefe for ECG coding practice, but getting pretty different scores due to ECGsource undercoding a lot of things that definitely should also be coded for. Thoughts on what to do for test day? Should I just never code for LAE or non-specific ST changes since not getting the points is technically better than losing a point for selecting an answer? Also ECGsource says sinus arrhythmia is normal ECG but O'Keefe says sinus arrhythmia is normal variant ECG. Any insight into which one to choose on test day since normal/normal variant are where the bulk of the points come from on those?