← Key Points to Note About Complete Heart Block
Workout Quiz
7 questions. Answers are graded instantly with expert explanations.
1. In Mobitz II AV block, how are the PR intervals characterized?
Gradually lengthening
Variable
Constant and identical
Absent
2. Which type of block typically has a narrow QRS complex, unless there is aberrant conduction?
Mobitz I
Mobitz II
Complete heart block
AV dissociation
3. What differentiates complete heart block from Mobitz I and II in terms of QRS regularity?
Complete heart block has irregular QRS intervals
Complete heart block has clockwork regular QRS intervals
Mobitz I and II have clockwork regular QRS intervals
Mobitz I and II have wide QRS intervals
4. In the context of complete heart block, what does AV dissociation refer to?
The atria and ventricles beat independently of each other
The atria and ventricles beat in synchrony
Only the atria are beating
Only the ventricles are beating
5. What is the typical rate range for a junctional escape rhythm in complete heart block?
20-40 beats per minute
40-60 beats per minute
60-100 beats per minute
Over 100 beats per minute
6. In complete heart block, what typically happens to the PR intervals?
They remain constant
They gradually lengthen
They change randomly
They are absent
7. What is the most common prognosis for patients with complete heart block and a wide QRS complex?
They do not require any treatment
They typically receive a temporary pacer
They typically receive a permanent pacer
They require only medication management
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