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Apical transverse motion as surrogate parameter to determine regional left ventricular function inhomogeneities: a new, integrative approach to left ventricular asynchrony assessment
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2009 (English)In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 30, no 8, 959-968 p.Article in journal (Refereed) Published
Abstract [en]

Aims

Left ventricular (LV) asynchrony assessment is mostly based on delays between regional myocardial velocity peaks. Regional function is barely considered. We propose apical transverse motion (ATM) as a new parameter integrating both temporal and functional information, which was tested in different conduction delays.

Methods and results

We examined 67 patients, 11 patients with post-infarct ischaemic left bundle branch blocks (iLBBB) and 25 patients with non-ischaemic left bundle branch block (nLBBB), 12 patients with right bundle branch block (RBBB), and 19 normal healthy volunteers (NORM). Longitudinal colour tissue Doppler data were used to calculate the total transverse apex motion (ATM), the transverse motion in the four-chamber view plane alone (ATM4CV) as well as regional myocardial deformation and conventional LV asynchrony parameters. Median ATM was 1.8 mm in NORM, 1.5 mm in RBBB (P = 0.999), 2.4 mm in iLBBB (P = 0.183), and 4.3 mm in nLBBB (P < 0.001 vs. NORM and RSB). ATM4CV behaved similarly, showed a good correlation with regional deformation data, and distinguished well between NORM and LBBB (AUC = 0.87).

Conclusion

Apical transverse motion is a new and simple parameter integrating information on both regional and temporal function inhomogeneities of the LV. It has a potential role in assessing LV asynchrony in the clinical context.

Place, publisher, year, edition, pages
2009. Vol. 30, no 8, 959-968 p.
National Category
Medical and Health Sciences
Research subject
Cardiology
Identifiers
URN: urn:nbn:se:uu:diva-196738DOI: 10.1093/eurheartj/ehp062PubMedID: 19297386OAI: oai:DiVA.org:uu-196738DiVA: diva2:610933
Available from: 2013-03-13 Created: 2013-03-13 Last updated: 2017-12-06Bibliographically approved

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Flachskampf, Frank A

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