Left ventricular torsion and circumferential strain responses to exercise in patients with ischemic coronary artery disease |
| |
| Authors: | Jesus Peteiro Alberto Bouzas-Mosquera Javier Broullon Gabriel Sanchez-Fernandez Cayetana Barbeito Lucia Perez-Cebey Dolores Martinez Jose M. Vazquez-Rodriguez |
| |
| Affiliation: | 1.Department of Cardiology,Complejo Hospitalario Universitario de A Coru?a (CHUAC), Instituto de Investigacion Biomedica de A Coru?a (INIBIC) and Universidad de A Coru?a,A Coru?a,Spain;2.Department of Information Technology,Complejo Hospitalario Universitario de A Coru?a (CHUAC), Instituto de Investigacion Biomedica de A Coru?a (INIBIC) and Universidad de A Coru?a,A Coru?a,Spain |
| |
| Abstract: | LV torsion during exercise in patients with coronary artery disease (CAD) is not well known. Circumferential strain (CS) and left ventricular (LV) torsion (Tor) have not been evaluated during ischemia in these patients. We aimed to assess the effect of ischemia during exercise echocardiography (ExE) on CS and Tor. We studied a group of 73 patients with true positive ExE results (Ischemic group: ischemia plus an abnormal coronary angiogram) and a matched control group of 66 patients with negative ExE and either normal coronary angiography or low post-test probability of CAD. Basal rotation (Rot) and apical rotation and basal and apical CS were studied by speckle tracking at rest and exercise. Apical CS and apical and basal Rot values were similar between groups at rest, except basal CS which was already worse in the ischemic group. At exercise, all rotational and CS parameters were impaired in the ischemic in comparison with the control group (basal CS: ?18?±?5 vs. ?25?±?7?%, p?
|
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
