title: Five-year follow-up two-dimensional speckle tracking echocardiography in a juvenile with a double-chambered left ventricle.
abstract: Double-chambered left ventricle (DCLV) is a particularly rare congenital entity characterized by the presence of two ventricular cavities separated by an abnormal muscle band. An asymptomatic 15-year-old boy was referred to our hospital because of electrocardiographic (ECG) abnormalities. His initial transthoracic echocardiography (TTE) demonstrated a DCLV with mild left ventricular systolic dysfunction. During a 5-year follow-up period, he remained symptom free with no changes in ECG and conventional TTE findings. However, two-dimensional speckle tracking echocardiography revealed a subtle progressive deterioration of left ventricular systolic function during the 5-year follow-up.
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Kenji
authors.identifier: http://orcid.org/0000-0002-8920-1997
authors.initials: K
authors.lastname: Harada
authors.affiliation: Department of Pediatrics, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Mori
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Chiyo
authors.initials: C
authors.lastname: Ichimiya
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Naho
authors.initials: N
authors.lastname: Terada
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Iima
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Harada
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Fujisawa
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Kawata
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Ayumi
authors.initials: A
authors.lastname: Okada
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Yamamoto
authors.affiliation: Department of Cardiovascular Medicine, Tokushima Prefectural Central Hospital, Tokushima, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Fujinaga
mesh_terms: D000293:Adolescent; D058070:Asymptomatic Diseases; D003937:Diagnosis, Differential; D004452:Echocardiography / Q000379:methods*; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005500:Follow-Up Studies; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D013318:Stroke Volume; D016896:Treatment Outcome; D057832:Watchful Waiting / Q000379:methods
keywords: cardiomyopathy; tissue and strain Doppler echocardiography