Syncope Associated With Alternating Fascicular Block in an Elderly Woman: A Case Report
Francesca Cali1, Goitom Weldearegay2, Chris Sani2
1Internal Medicine, State University of New York Downstate Health Sciences University, Brooklyn, USA.
Alternating fascicular block (AFB) can indicate serious heart conduction disease, often causing syncope. Early pacemaker implantation is recommended for symptomatic patients, even without explicit guidelines.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Case Reports
Background:
- Alternating fascicular block (AFB) involves intermittent left anterior and posterior fascicular blocks on ECG.
- While alternating bundle branch block is a recognized high-risk abnormality, evidence for AFB is less clear.
- AFB can signify advanced infra-Hisian conduction disease, potentially leading to syncope and bradyarrhythmias.
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