Pathophysiology
         
Interpolated VEBS   C20, C25, C26, C27  

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