Case 19 — ECGs

Six limb lead ECG with leads I, II, III simultaneously on the left and aVR, aVL, aVF on the right. Lead II continuous along the bottom. QRS complexes are wide with each preceded by a P wave. Terminal forces point cranially and to the right.
Six limb leads (I, II, III left; aVR, aVL, aVF right) with lead II continuous along the bottom.
Chest leads V1 and V2 along with lead II at the bottom, confirming the right bundle branch block pattern.
Chest leads V1 and V2 with lead II at bottom.

Quiz

1. What conduction abnormality is present?

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