Left Ventricular Contraction Duration Is the Most Powerful Predictor of Cardiac Events in LQTS: A Systematic Review and Meta-Analysis.
asymptomatic
contraction duration
electromechanical window
long-QT syndrome
symptomatic
Journal
Journal of clinical medicine
ISSN: 2077-0383
Titre abrégé: J Clin Med
Pays: Switzerland
ID NLM: 101606588
Informations de publication
Date de publication:
31 Aug 2020
31 Aug 2020
Historique:
received:
02
07
2020
revised:
21
08
2020
accepted:
26
08
2020
entrez:
4
9
2020
pubmed:
4
9
2020
medline:
4
9
2020
Statut:
epublish
Résumé
Long-QT syndrome (LQTS) is primarily an electrical disorder characterized by a prolonged myocardial action potential. The delay in cardiac repolarization leads to electromechanical (EM) abnormalities, which adds a diagnostic value for LQTS. Prolonged left ventricular (LV) contraction was identified as a potential risk for arrhythmia. The aim of this meta-analysis was to assess the best predictor of all EM parameters for cardiac events (CEs) in LQTS patients. We systematically searched all electronic databases up to March 2020, to select studies that assessed the relationship between echocardiographic indices-contraction duration (CD), mechanical dispersion (MD), QRS onset to peak systolic strain (QAoC), and the EM window (EMW); and electrical indices- corrected QT interval (QT The meta-analysis showed that LQTS patients had electrical and mechanical abnormalities as compared to controls-QT LQTS is associated with pronounced EM abnormalities, particularly prolonged LV myocardial CD, which is profound in symptomatic patients. These findings highlight the significant role of EM indices like CD in managing LQTS patients.
Sections du résumé
BACKGROUND
BACKGROUND
Long-QT syndrome (LQTS) is primarily an electrical disorder characterized by a prolonged myocardial action potential. The delay in cardiac repolarization leads to electromechanical (EM) abnormalities, which adds a diagnostic value for LQTS. Prolonged left ventricular (LV) contraction was identified as a potential risk for arrhythmia. The aim of this meta-analysis was to assess the best predictor of all EM parameters for cardiac events (CEs) in LQTS patients.
METHODS
METHODS
We systematically searched all electronic databases up to March 2020, to select studies that assessed the relationship between echocardiographic indices-contraction duration (CD), mechanical dispersion (MD), QRS onset to peak systolic strain (QAoC), and the EM window (EMW); and electrical indices- corrected QT interval (QT
RESULTS
RESULTS
The meta-analysis showed that LQTS patients had electrical and mechanical abnormalities as compared to controls-QT
CONCLUSIONS
CONCLUSIONS
LQTS is associated with pronounced EM abnormalities, particularly prolonged LV myocardial CD, which is profound in symptomatic patients. These findings highlight the significant role of EM indices like CD in managing LQTS patients.
Identifiants
pubmed: 32878246
pii: jcm9092820
doi: 10.3390/jcm9092820
pmc: PMC7565502
pii:
doi:
Types de publication
Journal Article
Langues
eng
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