Enhanced detection of electrode placement/connection errors

Lead connection and electrode positional errors are a common problem in ECG recording. This study set out to review the sensitivity and specificity of existing criteria in the Glasgow program using an older (1997) version of the software and to produce enhancements where required for incorporation into the current version of the program still in development. 50 volunteers were recruited to the study. Arm and leg lead connection errors were introduced as were V1/V2 and V2/V3 connection reversals. It was shown that detection of arm lead connection errors could be enhanced from 64% to 88% at 100% specificity. Chest lead misconnections were detected with improved sensitivity. V1 and V2 reversal was much more easily detected than V2 and V3 reversal while maintaining high specificity.