Key result
Limb-lead reversal axes are predictable within an average of 5 degrees compared to actual values (r=1.00, P<0.0001).
Why the study?
Are changes in the QRS axis due to limb-lead reversals predictable?
Observational (n=15)
Are changes in the QRS axis due to limb-lead reversals predictable?
Mean Difference: 5
p-value: p=<0.0001
Limb-lead reversals produce predictable changes in the QRS axis within an average of 5 degrees, which can help differentiate technical errors from true acute axis shifts.
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May aid ECG differentiation of lead reversal from true axis shifts; leaves open prospective validation before routine adoption.
Ho et al. (2006) conducted an observational in Limb-lead reversals (n=15). Limb-lead reversals vs. Baseline/actual QRS axis was evaluated on Difference between predicted and actual QRS axes (mean difference 5 degrees, p=<0.0001). Limb-lead reversal axes are predictable within an average of 5 degrees compared to actual values (r=1.00, P<0.0001).
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