Key result
ECG reveals typical AVNRT with an RP interval under 70 ms and ectopic beat perturbation.
Population
A 62-year-old lady with palpitation, chest discomfort, and pre-syncopal attack
Design
Case report and ECG challenge
Authors
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May aid ECG recognition of typical AVNRT; leaves open validation in larger prospective cohorts.
Case Report (n=1)
An ECG challenge demonstrating the diagnosis of typical AVNRT through the observation of an atrial ectopic beat perturbing the tachycardia during junctional refractoriness.
Lim et al. (2025) conducted a case report in Atrioventricular nodal re-entrant tachycardia (AVNRT) (n=1). An ECG of a 62-year-old woman with palpitations revealed typical atrioventricular nodal re-entrant tachycardia, characterized by a short RP interval (<70 ms) and perturbation by an ectopic beat.
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