Advanced AV block
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,…
Key Points to Note About Mobitz I & Mobitz II
A 49-year-old man presents to the emergency department after an episode of syncope. The following ECG is obtained:
Rhythm Interpretation: is the PR interval constant, lengthening, or randomly changing?
A 78-year-old woman presents to the emergency department after an episode of syncope. The following ECG is obtained:
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