Electrocardiographic and Arrhythmic Manifestations of End-Stage Atrial Myopathy in Patients With Longstanding Persistent or Permanent Atrial Fibrillation: A 3-Patient Case Series

16 September 2026 : Case report USA

Unusual clinical course

Frans Serpa

^{ABDEF 1*}, Nimesh Patel

^{DE 1}, Jose A. Joglar

^{ADEG 1}

DOI: 10.12659/AJCR.953661

Am J Case Rep 2026; 27:e953661

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Table 1 Summary of clinical characteristics of patients included in the case series.

	Patient 1	Patient 2	Patient 3
Age, years	45	42	69
Sex	Male	Male	Female
Cardiovascular comorbidities	HTN, stroke	HCM, SSS, valvular disease	HCM
Stage of AF	Stage 3C	Stage 3C	Stage 3C
Arrhythmic manifestations	Atrial tachycardia	Atrial standstill	Atrial standstillJunctional rhythm
Method for detecting atrial remodeling	Electroanatomic mapping	ECG, CIED interrogation	ECG, CIED interrogation
Abbreviations: AF, atrial fibrillation; CIED, cardiac implantable electronic device; ECG, electrocardiogram; SSS, sick sinus syndrome; HCM, hypertrophic cardiomyopathy; HTN, hypertension.

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