Isorhythmic AVD
Results:
Second-Degree AV Block, High-Grade
(Advanced AV Block)
Key Points Definition: A severe form of second-degree AV block—most often Mobitz II—characterized by multiple consecutive non-conducted P waves (e.g., 3:1 or 4:1 conduction). PR Intervals: Constant before conducted beats,…
Third-Degree AV Block
(Complete Heart Block)
Key Points Definition: Third-degree AV block is complete failure of conduction from atria to ventricles, resulting in independent atrial and ventricular activity—known as AV dissociation. Hallmark Feature: No P waves…
Rhythm Interpretation: AV dissociation does not always mean there is a complete heart block
A 64-year-old woman presents to the emergency department with sore throat. The following ECG was obtained at triage:
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