Alterations of systolic left ventricular twist after acute myocardial infarction
Jérôme Garot1, Olivier Pascal, Benoît Diébold
1Fédération de Cardiologie, Henri Mondor University Hospital, 51 Av du Mal De Lattre de Tassigny, 94010 Créteil, France. jgarot@free.fr
Abstract:
We sought to characterize the alterations of left ventricular (LV) twist after acute myocardial infarction in humans and to study their relationship to usual parameters of LV function. Systolic LV twist was measured by color tissue Doppler echocardiography (TDE) in 34 patients after anterior myocardial infarction and in 20 controls. In a subset of controls and patients, the assessment of LV twist by TDE was validated against magnetic resonance (MR) tissue tagging with good agreement between the two methods. Myocardial ischemia was responsible for a decrease in LV twist in infarct patients (P < 0.01). The decrease in LV twist was correlated with the extent of the asynergic area and global LV function as assessed by LV cineangiography (P < 0.001). Thus acute myocardial ischemia is responsible for a decrease in LV twist that is related to global LV function. Color TDE is a promising technique for straightforward assessment of LV twist in humans.
Related Concept Videos
Myocarditis I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Acute Coronary Syndrome I: Introduction
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Acute Coronary Syndrome III: Diagnostic Studies
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations


