Pathophysiology
         
SVEB Patterns (Bigeminy) C5, C7, C8, R1  

SVEB's occurring singly but in the following minimum sequence of QRS complexes: uANSNSAu; where A=Any Other Beat (Normal or Ectopic), N=Normal Sinus Beat, and S=SVEB. Variations in coupling intervals and/or form do not preclude bigeminy.

Rhythm Strip
SVEB Patterns (Bigeminy) Rhythm Strip

1st Degree AV Block with SVEBs in a Bigeminal Pattern

12 Lead EKG
SVEB Patterns (Bigeminy) 12 Lead EKG