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dc.contributor.authorChan, Jonathan
dc.contributor.authorShiino, Kenji
dc.contributor.authorObonyo, Nchafatso G
dc.contributor.authorHanna, Joseph
dc.contributor.authorChamberlain, Robert
dc.contributor.authorSmall, Andrew
dc.contributor.authorScalia, Isabel G
dc.contributor.authorScalia, William
dc.contributor.authorYamada, Akira
dc.contributor.authorHamilton-Craig, Christian R
dc.contributor.authorScalia, Gregory M
dc.contributor.authorLuis Zamorano, Jose
dc.date.accessioned2017-11-08T12:00:23Z
dc.date.available2017-11-08T12:00:23Z
dc.date.issued2017
dc.identifier.issn0894-7317
dc.identifier.doi10.1016/j.echo.2017.06.010
dc.identifier.urihttp://hdl.handle.net/10072/344134
dc.description.abstractBackground: The application of left ventricular (LV) global strain by speckle-tracking is becoming more widespread, with the potential for incorporation into routine clinical echocardiography in selected patients. There are no guidelines or recommendations for the training requirements to achieve competency. The aim of this study was to determine the learning curve for global strain analysis and determine the number of studies that are required for independent reporting. Methods: Three groups of novice observers (cardiology fellows, cardiac sonographers, medical students) received the same standardized training module prior to undertaking retrospective global strain analysis on 100 patients over a period of 3 months. To assess the effect of learning, quartiles of 25 patients were read successively by each blinded observer, and the results were compared to expert for correlation. Results: Global longitudinal strain (GLS) had uniform learning curves and was the easiest to learn, requiring a minimum of 50 patients to achieve expert competency (intraclass correlation coefficient > 0.9) in all three groups over a period of 3 months. Prior background knowledge in echocardiography is an influential factor affecting the learning for interobserver reproducibility and time efficiency. Short-axis strain analysis using global circumferential stain and global radial strain did not yield a comprehensive learning curve, and expert level was not achieved by the end of the study. Conclusions: There is a significant learning curve associated with LV strain analysis. We recommend a minimum of 50 studies for training to achieve competency in GLS analysis.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherMosby
dc.relation.ispartofpagefrom1081
dc.relation.ispartofpageto1090
dc.relation.ispartofissue11
dc.relation.ispartofjournalJournal of the American Society of Echocardiography
dc.relation.ispartofvolume30
dc.subject.fieldofresearchCardiovascular medicine and haematology
dc.subject.fieldofresearchCardiology (incl. cardiovascular diseases)
dc.subject.fieldofresearchcode3201
dc.subject.fieldofresearchcode320101
dc.titleLeft Ventricular Global Strain Analysis by Two-Dimensional Speckle-Tracking Echocardiography: The Learning Curve
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Health, School of Medicine
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version.
gro.hasfulltextNo Full Text
gro.griffith.authorChan, Jonathan H.


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