1. Left ventricular torsion and circumferential strain responses to exercise in patients with ischemic coronary artery disease
- Author
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Dolores Martínez, Gabriel Sanchez-Fernandez, Cayetana María Barbeito, Javier Broullon, Jesús Peteiro, Lucia Perez-Cebey, Alberto Bouzas-Mosquera, and José Manuel Vázquez-Rodríguez
- Subjects
Male ,medicine.medical_specialty ,Myocardial Ischemia ,Torsion, Mechanical ,Ischemia ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Coronary Angiography ,Ventricular Function, Left ,Coronary artery disease ,03 medical and health sciences ,Basal (phylogenetics) ,0302 clinical medicine ,Predictive Value of Tests ,Internal medicine ,medicine ,Humans ,Circumferential strain ,Radiology, Nuclear Medicine and imaging ,In patient ,030212 general & internal medicine ,Exercise ,Cardiac imaging ,Aged ,business.industry ,Middle Aged ,medicine.disease ,Adaptation, Physiological ,Myocardial Contraction ,Exercise echocardiography ,Biomechanical Phenomena ,Case-Control Studies ,Exercise Test ,Cardiology ,Female ,Stress, Mechanical ,Ventricular torsion ,Cardiology and Cardiovascular Medicine ,business ,Echocardiography, Stress - 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
- Published
- 2016
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