8. Response of left ventricular strain, strain rate and myocardial twist after transcatheter aortic valve implantation
| Autor: | Hesham Abdo Naeim, Ibraheem AlHarbi, Faisal O. Alatawi, Reda Abuelatta |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
lcsh:Diseases of the circulatory (Cardiovascular) system
medicine.medical_specialty Ejection fraction Longitudinal strain Transcatheter aortic business.industry Retrospective cohort study Odds ratio medicine.disease Surgery Stenosis lcsh:RC666-701 Internal medicine medicine Cardiology Twist business Left ventricular strain |
| Zdroj: | Journal of the Saudi Heart Association, Vol 29, Iss 4, p 321 (2017) |
| ISSN: | 1016-7315 |
| DOI: | 10.1016/j.jsha.2017.06.020 |
| Popis: | Clinical research. Presentation Type: Oral presentation. Introduction: Severe aortic stenosis (AS) causes Impairment of left ventricular (LV) myocardial deformation and associated with adverse outcome. The aim of this retrospective study was to assess the impact of TAVI on the recovery of myocardial mechanics. Methodology: Speckle-tracking echocardiography was used to assess global longitudinal strain (GLS), circumferential strain (CS) and rotational mechanics (apical rotation, basal rotation and twist) before and at midterm follow-up after TAVI. Predictors of myocardial recovery, defined as a 20% relative increase in the magnitude of GLS compared to baseline, were examined. Results: Fifty-nine patients (mean age, 80.2 ± 11.7 years) with severe AS and high surgical risk (mean Euro score, 12.9 ± 5.3%) were evaluated. At 8 ± 3 months after TAVI, GLS had significantly improved in patients with normal and depressed LVEF. The patients with baseline LVEF ⩾50%: GLS improved from 9.5 ± 3% to 12.2 ± 3.3% (P = .0001). The patients with baseline LVEF >50%: GLS improved from 13.9 ± 3.3% to 15.2 ± 3.3% (P = .003). In patients with LVEF >50%, LV twist was supraphysiologic at baseline and moved towards normal after TAVI (from 21.2 ± 6.9 to 15.6 ± 7.6, P = .001). In patients with LVEF ⩾50% there is no significant change in LV twist P = .853. In patients with LVEFs ⩾50%, CS was impaired before TAVI and improved after TAVI from −17.3 ± 6.6 to −20.7 ± 6.1, P = .01. Baseline GLS (odds ratio, 0.65, P |
| Databáze: | OpenAIRE |
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