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Article: Left Ventricular Stiffness in Adolescents and Young Adults After Arterial Switch Operation for Complete Transposition of the Great Arteries

TitleLeft Ventricular Stiffness in Adolescents and Young Adults After Arterial Switch Operation for Complete Transposition of the Great Arteries
Authors
KeywordsMyocardial stiffness
Diastolic wall strain
Arterial switch operation
Transposition of the great arteries
Issue Date2020
PublisherSpringer New York LLC. The Journal's web site is located at http://link.springer.de/link/service/journals/00246
Citation
Pediatric Cardiology, 2020, v. 41 n. 4, p. 747-754 How to Cite?
AbstractWe tested the hypothesis that left ventricular (LV) myocardial stiffness is altered in patients with transposition of great arteries (TGA) after arterial switch operation (ASO) and explored its associations with myocardial calibrated integrated backscatter (cIB) and LV myocardial deformation. Thirty-one patients and twenty-two age-matched controls were studied. LV myocardial stiffness was assessed by diastolic wall strain (DWS) and stiffness indices including (E/e)/LV end-diastolic dimension, (E/LV global longitudinal early diastolic strain rate)/LV end-diastolic volume, and (E/LV global circumferential early diastolic strain rate)/LV end-diastolic volume, where E and e are early diastolic transmitral and mitral annular velocities, respectively. LV myocardial cIB and longitudinal and circumferential myocardial deformation were determined by conventional and speckle tracking echocardiography. Patients had significantly lower DWS, higher stiffness indices, and greater myocardial cIB than controls (all p < 0.05). The LV longitudinal and circumferential systolic strain and systolic and diastolic strain rates were significantly lower in patients than controls (all p < 0.05). Greater average myocardial cIB was associated with lower DWS (r = − 0.44, p = 0.002). Worse DWS and LV stiffness indices were found to correlate with lower mitral annular systolic velocity, mitral annular late diastolic velocity, and LV longitudinal late diastolic strain rate (all p < 0.05). LV longitudinal and circumferential systolic strain and strain rate were also found to correlate with DWS (all p < 0.05). In conclusion, LV myocardial stiffening occurs in adolescents and young adults with TGA after ASO and is associated with impairment of ventricular systolic and diastolic myocardial deformation and myocardial fibrosis.
Persistent Identifierhttp://hdl.handle.net/10722/285477
ISSN
2019 Impact Factor: 1.564
2015 SCImago Journal Rankings: 0.732
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, C-
dc.contributor.authorLi, VWY-
dc.contributor.authorSo, EKF-
dc.contributor.authorCheung, YF-
dc.date.accessioned2020-08-18T03:53:47Z-
dc.date.available2020-08-18T03:53:47Z-
dc.date.issued2020-
dc.identifier.citationPediatric Cardiology, 2020, v. 41 n. 4, p. 747-754-
dc.identifier.issn0172-0643-
dc.identifier.urihttp://hdl.handle.net/10722/285477-
dc.description.abstractWe tested the hypothesis that left ventricular (LV) myocardial stiffness is altered in patients with transposition of great arteries (TGA) after arterial switch operation (ASO) and explored its associations with myocardial calibrated integrated backscatter (cIB) and LV myocardial deformation. Thirty-one patients and twenty-two age-matched controls were studied. LV myocardial stiffness was assessed by diastolic wall strain (DWS) and stiffness indices including (E/e)/LV end-diastolic dimension, (E/LV global longitudinal early diastolic strain rate)/LV end-diastolic volume, and (E/LV global circumferential early diastolic strain rate)/LV end-diastolic volume, where E and e are early diastolic transmitral and mitral annular velocities, respectively. LV myocardial cIB and longitudinal and circumferential myocardial deformation were determined by conventional and speckle tracking echocardiography. Patients had significantly lower DWS, higher stiffness indices, and greater myocardial cIB than controls (all p < 0.05). The LV longitudinal and circumferential systolic strain and systolic and diastolic strain rates were significantly lower in patients than controls (all p < 0.05). Greater average myocardial cIB was associated with lower DWS (r = − 0.44, p = 0.002). Worse DWS and LV stiffness indices were found to correlate with lower mitral annular systolic velocity, mitral annular late diastolic velocity, and LV longitudinal late diastolic strain rate (all p < 0.05). LV longitudinal and circumferential systolic strain and strain rate were also found to correlate with DWS (all p < 0.05). In conclusion, LV myocardial stiffening occurs in adolescents and young adults with TGA after ASO and is associated with impairment of ventricular systolic and diastolic myocardial deformation and myocardial fibrosis.-
dc.languageeng-
dc.publisherSpringer New York LLC. The Journal's web site is located at http://link.springer.de/link/service/journals/00246-
dc.relation.ispartofPediatric Cardiology-
dc.subjectMyocardial stiffness-
dc.subjectDiastolic wall strain-
dc.subjectArterial switch operation-
dc.subjectTransposition of the great arteries-
dc.titleLeft Ventricular Stiffness in Adolescents and Young Adults After Arterial Switch Operation for Complete Transposition of the Great Arteries-
dc.typeArticle-
dc.identifier.emailLi, VWY: wyvli@hku.hk-
dc.identifier.emailSo, EKF: edwinaso@hku.hk-
dc.identifier.emailCheung, YF: xfcheung@hku.hk-
dc.identifier.authorityCheung, YF=rp00382-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00246-020-02305-2-
dc.identifier.pmid32006085-
dc.identifier.scopuseid_2-s2.0-85078761045-
dc.identifier.hkuros312886-
dc.identifier.volume41-
dc.identifier.issue4-
dc.identifier.spage747-
dc.identifier.epage754-
dc.identifier.isiWOS:000518159000001-
dc.publisher.placeUnited States-

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