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University of Nebraska Medical Center
University of Nebraska Medical Center

ECG Part 3: Conduction Analysis, AV Block, and Bundle Branch Blocks

ECG showing AV block-first and second degree.

Conduction Analysis: AV Block & Bundle Branch Blocks focuses on identifying abnormalities in the heart’s electrical conduction system. Learners examine the different degrees of AV block (first-degree, second-degree Mobitz I and II, and third-degree/complete heart block) by evaluating PR intervals and atrioventricular conduction patterns. The section also introduces bundle branch blocks and fascicular blocks, teaching learners how to recognize right and left bundle branch block patterns, related axis deviations, and conduction abnormalities such as Wolff-Parkinson-White syndrome using characteristic ECG findings.
Updated 2026

Format: E-Learning Module
Development Date: August 11, 2026
Authors: Jennifer Parker, Nathan Anderson
Discipline: Medicine

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