Third degree AV block echocardiography and ultrasound
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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
Transthoracic echocardiography may be helpful in the diagnosis of the underlying diseases tend to third degree AV block. An echocardiography might show shreds of evidence in favor of cardiomyopathies and/or valvular heart diseases . In special case scenarios, transesophageal echocardiography is warranted and may help to diagnose etiologies such as valvular ring abscess. Furthermore, the left ventricular function can be determined using an echo, and provide evidences in favor of the placement of a pacemaker or defibrillator.
Echocardiography
- Echocardiography is useful for evaluation of underlying structural heart disease in patients presented with bradycardia or conduction abnormality.
- Common indications for echocardiography in suspicion of cardiac origin of bradycardia or conduction disorder may include:
- Syncope
- Lightheadedness/presyncope
- Symptoms related to aortic stenosis, hypertrophic cardiomyopathy, heart failure
Abbreviations:
PPM: Permanent pacemaker;
LBBB: Left bundle branch block
| The above table adopted from 2018 AHA/ACC/HRS Guideline |
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- Transthoracic echocardiography may be helpful in the diagnosis of the underlying diseases tend to third-degree AV block.
- An echocardiography might show shreds of evidence in favor of cardiomyopathies and/or valvular heart disease.
- In special case scenarios, transesophageal echocardiography is warranted and may help to diagnose etiologies such as valvular ring abscess.
- Furthermore, the left ventricular function can be determined using an echo, and provide shreds of evidence in favor of the placement of a pacemaker or defibrillator.
- Last but not the least, there are studies in favor of an association between inter-ventricular mechanical delay (IVMD) and cardiac function in pediatric complete heart block.[1]
References
- ↑ Hayashi T, Ono H, Kaneko Y (2018). "Echocardiographic assessment of ventricular contraction and synchrony in children with isolated complete atrioventricular block and epicardial pacing: Implications of interventricular mechanical delay". Echocardiography. 35 (9): 1370–1377. doi:10.1111/echo.14035. PMID 29808935.