An adult with an acquired atrioventricular block may be a candidate for placement of a permanent implantable pacemaker if certain symptoms are present or if there is risk for sudden death.
First Degree Heart Block
Definite Indications |
Possible Indications |
Not Indicated |
none |
marked block in a patient with CHF |
asymptomatic |
|
symptomatic with low cardiac output relieved by temporary pacing |
block expected to resolve |
Second Degree Heart Block
Definite Indications |
Possible Indications |
Not Indicated |
with symptomatic bradycardia, permanent or intermittent |
Mobitz Type II without symptoms, permanent or intermittent |
block expected to resolve |
|
Mobitz Type I at or below His bundle without symptoms |
Mobitz Type I above His bundle without symptoms |
Third Degree Heart Block
Definite Indications |
Possible Indications |
Not Indicated |
asymptomatic with escape rhythm < 40 beats per minute |
asymptomatic, with average rate >= 40 beats per minute |
block expected to resolve |
asymptomatic with asystole > 3.0 seconds |
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symptomatic bradycardia |
|
|
need for drugs causing symptomatic bradycardia |
|
|
after catheter ablation of the AV junction |
|
|
postoperative and not expected to resolve |
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|
associated with neuromuscular disease |
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Specialty: Cardiology