Key result
Transient ECG signal saturation creates pseudo-conduction abnormalities that closely mimic advanced AV block.
Case Report (n=1)
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Transient ECG signal saturation can create artifacts that mimic advanced atrioventricular block, highlighting the need to evaluate internal signal coherence to avoid misdiagnosis.
CASE SUMMARY: A 65-year-old man with no known cardiovascular disease and no prior history of syncope presented to the emergency department with fatigue, abdominal pain, and fever and was admitted with a diagnosis of sepsis of abdominal origin. On initial evaluation, he was hemodynamically stable and denied cardiac symptoms. A resting 12-lead electrocardiogram (ECG) showed conduction abnormalities of uncertain significance, prompting a focused interpretative challenge. TAKE-HOME MESSAGES: Transient ECG signal saturation can create pseudo-conduction abnormalities that closely mimic advanced atrioventricular block. Evaluation of internal signal coherence is essential to differentiate true electrophysiologic disorders from acquisition-related artifacts.
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Vernacchia et al. (2026) conducted a case report in Pseudo-atrioventricular block (n=1). ECG signal saturation was evaluated. Transient ECG signal saturation can create pseudo-conduction abnormalities that closely mimic advanced atrioventricular block.
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