An incomplete right bundle-branch block shows an rSr’ complex in lead V₁, and a terminal r wave in aVR. The r’ wave in lead V₁ may be smaller than, equal to, or greater than the initial r wave. 

RVH shows lead V₁ with an r’ wave that is broader than the initial r wave in conjunction with negative T waves in leads V₂, V₃, and possibly in V₄ and V₅.

Case 2

A 79-year-old man.

79-Year-Old Man Incomplete RBBB ECG