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  • Title: Serial analysis of regional left ventricular wall motion by two-dimensional echocardiography in patients with coronary artery enlargement after Kawasaki disease.
    Author: Vogel M, Smallhorn JF, Freedom RM.
    Journal: J Am Coll Cardiol; 1992 Oct; 20(4):915-9. PubMed ID: 1527302.
    Abstract:
    OBJECTIVES: This study was designed to assess the temporal relation between early coronary artery abnormalities and left ventricular function in Kawasaki disease. BACKGROUND: Although late segmental wall motion abnormalities may be seen in patients with Kawasaki disease who have coronary artery stenosis, the impact of early coronary artery abnormalities is unclear. METHODS: Regional left ventricular wall motion was assessed by two-dimensional echocardiography in 18 patients with Kawasaki disease and echocardiographic evidence of coronary artery enlargement at 3 weeks and 3 months and at either 6 or 12 months after the onset of fever. Four patients had a persistent left coronary artery aneurysm, four had regression of their aneurysm, two had persistent left coronary artery ectasia and eight had regression of ectasia. Left ventricular wall motion was assessed by measuring regional area change in parasternal and apical views. After planimetry of an end-systolic and an end-diastolic frame, the ventricle was divided into eight equal segments and the percent area change was calculated. A floating system correcting for translation and rotation was applied. The measurements in the patient group were compared with values previously obtained in 55 normal age-matched infants and children. RESULTS: A transient regional wall motion abnormality 3 and 6 months after the onset of fever was discovered in the inferolateral wall of one patient with a persistent left coronary artery aneurysm. One patient with regression of coronary artery ectasia had a persistent wall motion abnormality in the anterolateral left ventricular wall. There was no correlation between the extent of coronary artery enlargement and the presence or absence of wall motion abnormalities. CONCLUSIONS: These early changes are most likely secondary to associated myocarditis rather than coronary artery abnormalities.
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