Key result
Conservative management resolves post-cardiac surgery junctional ectopic tachycardia in a young adult.
Why the study?
Junctional ectopic tachycardia is a well-recognized postoperative arrhythmia in pediatric patients but is rarely described and may be underrecognized in adults following cardiac surgery.
Case Report (n=1)
Junctional ectopic tachycardia should be considered in adults presenting with postoperative narrow-complex tachycardia, as accurate noninvasive ECG diagnosis can prevent unnecessary cardioversion or antiarrhythmic interventions.
Conservative management may suffice in stable adults with postoperative JET; extends pediatric observations but leaves open need for prospective data.
BACKGROUND: Junctional ectopic tachycardia (JET) is a well-recognized postoperative arrhythmia in pediatric patients but is rarely described in adults following cardiac surgery. CASE SUMMARY: A 31-year-old man developed acute dyspnea and palpitations on postoperative day 4 following aortic valve replacement and ascending aorta replacement. Telemetry revealed sustained narrow-complex tachycardia with atrioventricular dissociation, ventricular predominance (V > A), and QRS morphology identical to sinus rhythm. Other causes of postoperative tachycardia were systematically excluded, and JET was diagnosed. Conservative management resulted in spontaneous resolution of the arrhythmia. DISCUSSION: JET is an uncommon but important cause of postoperative tachycardia in adults. This case emphasizes the diagnostic value of careful electrocardiogram analysis in differentiating JET from other narrow-complex tachycardias and preventing unnecessary interventions. TAKE-HOME MESSAGES: JET should be considered in adults presenting with postoperative narrow-complex tachycardia and atrioventricular dissociation. Accurate electrocardiogram interpretation is essential for appropriate management.
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Jordán et al. (2026) conducted a case report in Junctional ectopic tachycardia after cardiac surgery (n=1). Conservative management and electrocardiogram monitoring was evaluated on Spontaneous resolution of arrhythmia. Conservative management led to the spontaneous resolution of junctional ectopic tachycardia in a 31-year-old man following cardiac surgery.
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