Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction

Shin Takiuchi, Hiroshi Itoh, Katsuomi Iwakura, Yoshiaki Taniyama, Nagahiro Nishikawa, Tohru Masuyama, Masatsugu Hori, Yorihiko Higashino, Kenshi Fujii, Takazo Minamino

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Background - The aim of the present study was to characterize temporal changes in cyclic variation of ultrasonic integrated backscatter (IBS), which reflects intrinsic contractile performance, in patients with reperfused acute myocardial infarction (AMI) and to elucidate the clinical value of tissue characterization in predicting myocardial viability. Methods and Results - We recorded short-axis IBS images before and 3, 7, and 21 days after reperfusion in 26 patients with AMI and obtained the cyclic variation of lBS in the normal and infarct zones. When cyclic variation showed synchrony and asynchrony, we expressed its magnitude as positive and negative values, respectively, called the phase-corrected magnitude. We also measured average wall motion score (dyskinesis, 4; normal, 0) of the infarct segments. The phase-corrected magnitude was lower in the infarct zone than in the normal zone before reperfusion (0.3±2.5 versus 5.2±1.7 dB, P

Original languageEnglish
Pages (from-to)356-362
Number of pages7
JournalCirculation
Volume97
Issue number4
Publication statusPublished - Feb 3 1998
Externally publishedYes

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Ultrasonics
Reperfusion
Myocardial Infarction

Keywords

  • Echocardiography
  • Myocardial contraction
  • Myocardial infarction
  • Reperfusion
  • Ultrasonics

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Takiuchi, S., Itoh, H., Iwakura, K., Taniyama, Y., Nishikawa, N., Masuyama, T., ... Minamino, T. (1998). Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction. Circulation, 97(4), 356-362.

Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction. / Takiuchi, Shin; Itoh, Hiroshi; Iwakura, Katsuomi; Taniyama, Yoshiaki; Nishikawa, Nagahiro; Masuyama, Tohru; Hori, Masatsugu; Higashino, Yorihiko; Fujii, Kenshi; Minamino, Takazo.

In: Circulation, Vol. 97, No. 4, 03.02.1998, p. 356-362.

Research output: Contribution to journalArticle

Takiuchi, S, Itoh, H, Iwakura, K, Taniyama, Y, Nishikawa, N, Masuyama, T, Hori, M, Higashino, Y, Fujii, K & Minamino, T 1998, 'Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction', Circulation, vol. 97, no. 4, pp. 356-362.
Takiuchi S, Itoh H, Iwakura K, Taniyama Y, Nishikawa N, Masuyama T et al. Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction. Circulation. 1998 Feb 3;97(4):356-362.
Takiuchi, Shin ; Itoh, Hiroshi ; Iwakura, Katsuomi ; Taniyama, Yoshiaki ; Nishikawa, Nagahiro ; Masuyama, Tohru ; Hori, Masatsugu ; Higashino, Yorihiko ; Fujii, Kenshi ; Minamino, Takazo. / Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction. In: Circulation. 1998 ; Vol. 97, No. 4. pp. 356-362.
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