Third degree AV block other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2]
Overview
Other diagnostic studies for third-degree AV block include diagnostic electrophysiologic studies, which may demonstrate atrioventricular (AV) conduction abnormalities and help to determine the level of the block (AV nodal or infranodal) and mapping, and also used to provide basic materials prior to intervention and placement of a pacemaker.
Ambulatory monitoring is warranted in cases of possible transient heart block, or some other bradyarrhythmias that might be mistaken with third-degree AV block. Finally, if there are concerns for ischemic heart disease the cardiac catheterization or stress testing is warranted and might show pieces of evidence of active coronary ischemia, or filling defect in the angiogram or ECG findings suggestive of a positive stress test.
Other Diagnostic Studies
Other diagnostic studies for third-degree AV block include diagnostic electrophysiologic studies, which may demonstrate:
- Atrioventricular (AV) conduction abnormalities
- Determining the level of the block (AV nodal or infranodal)
- Mapping, and providing basic material for intervention and placement of a pacemaker
Ambulatory monitoring is warranted in cases of:
- Transient heart block
- Other bradyarrhythmias that might be mistaken with third-degree AV block
Finally, if there are concerns for ischemic heart disease the cardiac catheterization or stress testing is warranted and might show:
- Pieces of evidence of active coronary ischemia
- Filling defect in the angiogram
- Positive stress test