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Titolo:
Myocardial longitudinal motion by tissue velocity imaging in the evaluation of patients with myocardial infarction
Autore:
Palmes, PP; Masuyama, T; Yamamoto, K; Kondo, H; Sakata, Y; Takiuchi, S; Kuzuya, T; Hori, M;
Indirizzi:
Osaka Univ, Grad Sch Med, Dept Internal Med 1 & Therapeut A8, Suita, Osaka5650871, Japan Osaka Univ Suita Osaka Japan 5650871 apeut A8, Suita, Osaka5650871, Japan Osaka Univ, Grad Sch Med, Dept Geriatr Med, Suita, Osaka 5650871, Japan Osaka Univ Suita Osaka Japan 5650871 atr Med, Suita, Osaka 5650871, Japan
Titolo Testata:
JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
fascicolo: 9, volume: 13, anno: 2000,
pagine: 818 - 826
SICI:
0894-7317(200009)13:9<818:MLMBTV>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
TWO-DIMENSIONAL ECHOCARDIOGRAPHY; VENTRICULAR WALL-MOTION; DOPPLER-ECHOCARDIOGRAPHY; SYSTOLIC FUNCTION; CONTRACTION ABNORMALITIES; QUANTITATIVE DETECTION; HEART-DISEASE; MITRAL ANULUS; PERFUSION; EXTENT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Masuyama, T Osaka Univ, Grad Sch Med, Dept Internal Med 1 & Therapeut A8, 2-2 Yamadaoka, Suita, Osaka 5650871, Japan Osaka Univ 2-2 Yamadaoka Suita Osaka Japan 5650871 0871, Japan
Citazione:
P.P. Palmes et al., "Myocardial longitudinal motion by tissue velocity imaging in the evaluation of patients with myocardial infarction", J AM S ECHO, 13(9), 2000, pp. 818-826

Abstract

Left ventricular (LV) longitudinal shortening plays an important role in cardiac contraction and is invariably affected by the presence of coronary artery disease. Third-generation tissue velocity imaging (TVI) color-maps cardiac movement by obtaining mean velocities of LV segments from the same set of beats. The goals of this study were to characterize patterns of longitudinal myocardial motion velocity in healthy subjects and to use these patterns to evaluate abnormal segments of patients with myocardial infarction (MI). Included were 20 healthy subjects and 16 patients with MI who underwent a 2-dimensional Doppler echocardiography study. Myocardial velocity profiles were taken at the anulus, basal, mid, and apical segments of the septaland lateral walls in the apical view. Segmental velocity patterns from healthy subjects were compared with-abnormal segments in patients with MI. Both lateral and septal walls of healthy subjects showed significant basal-apical myocardial velocity reductions in systolic shortening (Sm) and early and late diastolic lengthening (Em and Am) and a basal-apical increase in theEm/Am ratio. The lateral wall had greater Sm and Em velocities than the septal wall. The Sm and Em velocities and the Em/Am ratio were significantly reduced in the abnormal segments in patients with MI. Latent lateral wall ischemia may have been detected in 5 of 9 patients with septal infarction, showing reduced Sm velocity in apparently normal lateral walls. In conclusion, TVI objectively quantifies directional and incremental changes in myocardial movement that are useful in evaluating global and regional myocardial function, and it may play a role in the detection of early myocardial ischemia.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 02:21:32