Transverse false tendons in the left ventricular cavity are associated with early repolarization

Left ventricular false tendons (LVFTs) are related to precordial murmurs, ventricular arrhythmias and some repolarization abnormalities. Early repolarization (ER) is a specific type of repolarization abnormality. The aim of the present study was to investigate the relationship between LVFTs and ER....

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Veröffentlicht in:PloS one 2015-05, Vol.10 (5), p.e0125173-e0125173
Hauptverfasser: Liu, Yuan, Mi, Ning, Zhou, Yiming, An, Peng, Bai, Yongyi, Guo, Yifang, Hong, Changming, Ji, Zhixin, Ye, Ping, Wu, Caie
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container_issue 5
container_start_page e0125173
container_title PloS one
container_volume 10
creator Liu, Yuan
Mi, Ning
Zhou, Yiming
An, Peng
Bai, Yongyi
Guo, Yifang
Hong, Changming
Ji, Zhixin
Ye, Ping
Wu, Caie
description Left ventricular false tendons (LVFTs) are related to precordial murmurs, ventricular arrhythmias and some repolarization abnormalities. Early repolarization (ER) is a specific type of repolarization abnormality. The aim of the present study was to investigate the relationship between LVFTs and ER. This study retrospectively included 99 consecutive healthy subjects and 33 patients with ER. Early repolarization was defined as an elevation of the QRS-ST junction of >0.1 mV from baseline in at least 2 inferior or lateral leads, manifested as QRS slurring or notching. Each participant was examined using echocardiography with second harmonic imaging, and the attachments of the LVFTs were recorded. A total of 93 LVFTs were present in 82 (83%) of the 99 healthy subjects. Of these 93 LVFTs, the majority (79/93, or 84.9%) were longitudinal-type LVFTs, which originated from the basal interventricular septum (IVS) and progressed toward the apical segment of the left ventricular free wall. There were significant differences in the positioning of the LVFTs between the ER patients and control (P < 0.0001). LVFTs between mid-IVS to the middle of the LV free wall were found more common in patients with ER compared with control subjects (47.5% vs. 6.5%, P < 0.0001). In the ER group, LVFTs between the basal IVS to the apical segment of LV free wall were only identified in 21% of the LVFTs, compared to a value of 84.9% for the control group (P < 0.0001). The distribution of LVFT trends in the ER group was also significantly different from that in the control group (P < 0.05). LVFTs are commonly visualized using echocardiography. An LVFT from the basal IVS to the apical segment of the left ventricular free wall may be a normal anatomical structure in the left ventricular cavity. On the contrary, transverse false tendons in the left ventricular cavity may be associated with ER.
doi_str_mv 10.1371/journal.pone.0125173
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Early repolarization (ER) is a specific type of repolarization abnormality. The aim of the present study was to investigate the relationship between LVFTs and ER. This study retrospectively included 99 consecutive healthy subjects and 33 patients with ER. Early repolarization was defined as an elevation of the QRS-ST junction of &gt;0.1 mV from baseline in at least 2 inferior or lateral leads, manifested as QRS slurring or notching. Each participant was examined using echocardiography with second harmonic imaging, and the attachments of the LVFTs were recorded. A total of 93 LVFTs were present in 82 (83%) of the 99 healthy subjects. Of these 93 LVFTs, the majority (79/93, or 84.9%) were longitudinal-type LVFTs, which originated from the basal interventricular septum (IVS) and progressed toward the apical segment of the left ventricular free wall. There were significant differences in the positioning of the LVFTs between the ER patients and control (P &lt; 0.0001). LVFTs between mid-IVS to the middle of the LV free wall were found more common in patients with ER compared with control subjects (47.5% vs. 6.5%, P &lt; 0.0001). In the ER group, LVFTs between the basal IVS to the apical segment of LV free wall were only identified in 21% of the LVFTs, compared to a value of 84.9% for the control group (P &lt; 0.0001). The distribution of LVFT trends in the ER group was also significantly different from that in the control group (P &lt; 0.05). LVFTs are commonly visualized using echocardiography. An LVFT from the basal IVS to the apical segment of the left ventricular free wall may be a normal anatomical structure in the left ventricular cavity. 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LVFTs between mid-IVS to the middle of the LV free wall were found more common in patients with ER compared with control subjects (47.5% vs. 6.5%, P &lt; 0.0001). In the ER group, LVFTs between the basal IVS to the apical segment of LV free wall were only identified in 21% of the LVFTs, compared to a value of 84.9% for the control group (P &lt; 0.0001). The distribution of LVFT trends in the ER group was also significantly different from that in the control group (P &lt; 0.05). LVFTs are commonly visualized using echocardiography. An LVFT from the basal IVS to the apical segment of the left ventricular free wall may be a normal anatomical structure in the left ventricular cavity. On the contrary, transverse false tendons in the left ventricular cavity may be associated with ER.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25933440</pmid><doi>10.1371/journal.pone.0125173</doi><oa>free_for_read</oa></addata></record>
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subjects Abnormalities
Arrhythmia
Cardiac arrhythmia
Cardiology
Case-Control Studies
Clinical medicine
Disease
Echocardiography
Electrocardiography
Female
Geriatrics
Health care industry
Heart
Heart Ventricles - physiopathology
Hospitals
Humans
Male
Medicine
Otolaryngology
Patients
Septum
Studies
Tendons
Tendons - physiopathology
Ventricle
title Transverse false tendons in the left ventricular cavity are associated with early repolarization
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