Bradyarrhythmias

Question 1

What are the differences/characteristics of the three degrees of SA exit block? How are they treated?

Answer 1

Primary - can’t be seen on ECG
Secondary - intermittent/absent P-waves
Tertiary - lack of atrial activity, susidiary atrial pacemaker takes over, sinus arrest on ECG
Pacer

Question 2

How is SA node dysfunction diagnosed? Treated?

Answer 2

Diagnosed - Holter monitor, carotid sinus pressure > 5 sec

Treatment - pacer

Question 3

Which disease causes calcification of the heart skeleton? Which only degenerates the conduction system?

Answer 3

Lev - degenerates skeleton

Lenegres - degrades only conduction system

Question 4

What can cause PAT with block?

Answer 4

Digoxin toxicity

Question 5

What syndrome is associated with Tertiary AV block?

Answer 5

Sttokes-Adam Syncope/Syndrome

Question 6

How are Mobitz II and Tertiary AV blocks treated?

Answer 6

Pacemaker

Question 7

What 4 conditions requrie permanent pacemakers?

Answer 7

Persistent 2nd degree AVblock with bilateral BBB
Compelte Heart Block
Symptomatic AV block at any level
Transient advanced AV block at AV node level