title: Normal Sinus Rhythm-Sinus Bradycardia is Common in Young Children Post-extracardiac Fontan.
abstract: We hypothesized that normal sinus rhythm-sinus bradycardia is common in young children following extracardiac Fontan. After excluding patients with sinus pauses, junctional rhythm, tachy-brady syndrome, frequent ectopics, or ectopic atrial rhythm, we found an ambulatory 24-h Holter monitor average heart rate of 78 ± 12 beats per minute (bpm) in 33 post-extracardiac Fontan children with a median age of 6 years (5-10). A 24-h average heart rate of 78 ± 12 bpm is statistically significantly lower than a 24-h average heart rate value of 90 ± 10 bpm derived from a similarly aged control population (p < 0.01). We conclude that after excluding those with significant arrhythmias, normal sinus rhythm-sinus bradycardia is common in children post-extracardiac Fontan.
authors.affiliation: Children's Heart Center Nevada, 3006 S. Maryland Pkwy Ste. 690, Las Vegas, NV, 89109, USA. wnevans50@aol.com.|Division of Pediatric Cardiology, Department of Pediatrics, University of Nevada School of Medicine, 2040 W. Charleston Blvd Ste. 402, Las Vegas, NV, 89109, USA. wnevans50@aol.com.
authors.forename: William N
authors.initials: WN
authors.lastname: Evans
authors.affiliation: Children's Heart Center Nevada, 3006 S. Maryland Pkwy Ste. 690, Las Vegas, NV, 89109, USA.|Division of Pediatric Cardiology, Department of Pediatrics, University of Nevada School of Medicine, 2040 W. Charleston Blvd Ste. 402, Las Vegas, NV, 89109, USA.
authors.forename: Ruben J
authors.initials: RJ
authors.lastname: Acherman
authors.affiliation: Children's Heart Center Nevada, 3006 S. Maryland Pkwy Ste. 690, Las Vegas, NV, 89109, USA.|Division of Pediatric Cardiology, Department of Pediatrics, University of Nevada School of Medicine, 2040 W. Charleston Blvd Ste. 402, Las Vegas, NV, 89109, USA.
authors.forename: Humberto
authors.initials: H
authors.lastname: Restrepo
mesh_terms: D001145:Arrhythmias, Cardiac; D001919:Bradycardia; D002648:Child; D002675:Child, Preschool; D015716:Electrocardiography, Ambulatory; D018729:Fontan Procedure; D006801:Humans
keywords: Arrhythmias; Fontan; Holter monitor; Sinus bradycardia