Pathophysiology
         
Interpolated VEBS      

An isolated VEB which occurs without any compensatory pause between two normal sinus beats, but significantly alters the concurrent heart rate. The sequence appears as: "N_NVN_N", where N=Nomal Sinus Beat, V=VEB, and _= the regular R-R interval between the Normal Sinus Beats.

Rhythm Strip
Interpolated VEBS Rhythm Strip

Interpolated VEB. Note the "concealed" condition (hidden P-wave) of the sinus originated beat immediatly following the Interpolated VEB))

12 Lead EKG
Interpolated VEBS 12 Lead EKG