[Comparison of pseudo Q wave occurrence and distribution on the body surface in New Zealand rabbit recorded by Wilson lead and head-chest lead].

Objective: To compare the occurrence and distribution of pseudo Q wave on the body surface of rabbits recorded by Wilson lead with those detected by head-chest (HC) lead.

Methods: ECGs were recorded at each of the 70 points on the thoracodorsal regions of the body surface in 30 normal New-Zealand rabbits. The diagnostic value of the 2 lead systems was assessed on the basis of the detection of occurrence and distribution of pseudo Q wave.

Results: Pseudo Q wave was recorded at many points extensively in the thoracodorsal regions by Wilson lead, and only a few testing points on the upper dorsal surface showed pseudo Q wave activity while by HC lead. At the same testing point, the instances of pseudo Q wave detection by the two lead systems respectively were shown to be significantly different by X(2) test (P<0.05).

Conclusion: HC lead is superior to Wilson lead in terms of its low occurrence rate and limited distribution regions of pseudo Q wave recorded on the body surface of normal rabbits.