Faculty Information |
|
Article types | Original article |
Language | English |
Refereed paper | Refereed |
Title | The association between left ventricular twisting motion and mechanical dyssynchrony: a three-dimensional speckle tracking study. |
Journal | Formal name:Heart and vessels Abbreviation:Heart Vessels ISSN code:1615-2573(Electronic)0910-8327(Linking) |
Volume, Number, Page | 31(2),pp.158-64 |
Papers・Author | Fujiwara Shohei, Komamura Kazuo, Nakabo Ayumi, Masaki Mitsuru, Fukui Miho, Sugahara Masataka, Itohara Kanako, Soyama Yuko, Goda Akiko, Hirotani Shinichi, Mano Toshiaki, Masuyama Tohru |
Publication date | 2016/02 |
Papers・Description | Left ventricular (LV) dyssynchrony is a causal factor in LV dysfunction and thought to be associated with LV twisting motion. We tested whether three-dimensional speckle tracking (3DT) can be used to evaluate the relationship between LV twisting motion and dyssynchrony. We examined 25 patients with sick sinus syndrome who had received dual chamber pacemakers. The acute effects of ventricular pacing on LV wall motion after the switch from atrial to ventricular pacing were assessed. LV twisting motion and dyssynchrony during each pacing mode were measured using 3DT. LV dyssynchrony was calculated from the time to the minimum peak systolic areastrain of 16 LV imaging segments. Ventricular pacing increased LV dyssynchrony and decreased twist and torsion. A significant correlation was observed between changes in LV dyssynchrony and changes in torsion (r = -0.65, p < 0.01). Evaluation of LV twisting motion can potentially be used for diagnosing LV dyssynchrony. |
DOI | 10.1007/s00380-014-0586-4 |
PMID | 25300928 |