Ultrasound tissue characterization of the myocardium in patients after Kawasaki disease

Benedetta Leonardi, Vincenzo Giglio, Stephen P. Sanders, Vincenzo Pasceri, Andrea De Zorzi

Research output: Contribution to journalArticle

Abstract

We sought to determine if changes in myocardial physical properties, detected by ultrasound tissue characterization (UTC), are present in asymptomatic children years after an acute episode of Kawasaki disease (KD) and if such changes are related to coronary artery aneurysms (CAs). Myocardial UTC analysis was performed 4.8 ± 3.4 years after acute KD in 22 patients, mean age 6.6 ± 3.4 years, with or without CA, who had a normal ECG and normal left ventricular (LV) systolic and diastolic function by echocardiography. Twenty-two age-matched subjects were studied as controls. Cyclic variation of integrated backscatter (cvIBS) and calibrated integrated backscatter (cIBS) were assessed in 16 LV myocardial segments in each patient and control. We found large differences in the UTC data between patients and controls: cvIBS, 7.8 ± 0.8 vs 8.9 ± 0.6 dB; cIBS, 28.6 ± 3.2 vs 25.2 ± 1.0 dB (P <10-3 for both). The average values of cIBS and cvIBS did not differ significantly between KD patients with and patients without CA or stenosis. In conclusion, UTC analysis demonstrated significant differences in myocardial tissue properties between KD patients and controls, despite similar measures of LV function, independent of coronary artery abnormalities. UTC analysis might improve risk stratification for KD patients.

Original languageEnglish
Pages (from-to)766-772
Number of pages7
JournalPediatric Cardiology
Volume31
Issue number6
DOIs
Publication statusPublished - Aug 2010

Keywords

  • Echocardiography
  • Kawasaki
  • Ultrasound tissue characterization

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Pediatrics, Perinatology, and Child Health
  • Medicine(all)

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