Alterations in the mitral flow velocity pattern induced by acute myocardial infarction - Doppler findings before and after infarction

H. Watada, Hiroshi Itoh, T. Masuyama, M. Hori, M. Aburaya, Y. Higashino, K. Fujii, T. Minamino

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Several studies have demonstrated that myocardial infarction (MI) is likely to alter left ventricular diastolic function. However, it is unclear whether MI per se alters Doppler transmitral flow velocity patterns (TMF) clinically. To investigate how myocardial infarction alters TMF clinically, we assessed serial changes in TMF in 13 patients whose TMF patterns were recorded at a mean of 7 months before and after MI in relation to the size of MI. From TMF, early and atrial filling flow velocities (E and A (m/s), respectively), and the E/A ratio, were measured. From simultaneously recorded two-dimensional echocardiograms, left ventricular dimensions and wall motion score (WMS: sum of 17 segmental scores (dys/akinesis=3 to normal=0)) were determined. The patients were divided into two subsets based on the values for WMS in the convalescent stage; 8 patients had small MI (WMS≤10) and 5 patients had large MI (WMS >10). In patients with small MI, although E and the E/A ratio decreased at day-1 compared with pre-MI values (pre-MI vs day- 1, E; 0.54 ± 0.12 vs 0.39 ± 0.15, p25, TMF patterns showed 'pseudonormalization' (E/A ratio> 1.0) throughout the follow-up period, with a progressive increase in left ventricular dimension. Thus, MI per se does not always produce clear changes in the Doppler TMF pattern in clinical settings, and the size of the MI seems to be a determinant of the TMF pattern after MI.

Original languageEnglish
Pages (from-to)274-283
Number of pages10
JournalJapanese Circulation Journal
Volume59
Issue number5
Publication statusPublished - 1995
Externally publishedYes

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Infarction
Myocardial Infarction
Left Ventricular Function

Keywords

  • Diastolic function
  • Doppler ultrasound
  • Myocardial infarction
  • Reperfusion

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Alterations in the mitral flow velocity pattern induced by acute myocardial infarction - Doppler findings before and after infarction. / Watada, H.; Itoh, Hiroshi; Masuyama, T.; Hori, M.; Aburaya, M.; Higashino, Y.; Fujii, K.; Minamino, T.

In: Japanese Circulation Journal, Vol. 59, No. 5, 1995, p. 274-283.

Research output: Contribution to journalArticle

Watada, H, Itoh, H, Masuyama, T, Hori, M, Aburaya, M, Higashino, Y, Fujii, K & Minamino, T 1995, 'Alterations in the mitral flow velocity pattern induced by acute myocardial infarction - Doppler findings before and after infarction', Japanese Circulation Journal, vol. 59, no. 5, pp. 274-283.
Watada, H. ; Itoh, Hiroshi ; Masuyama, T. ; Hori, M. ; Aburaya, M. ; Higashino, Y. ; Fujii, K. ; Minamino, T. / Alterations in the mitral flow velocity pattern induced by acute myocardial infarction - Doppler findings before and after infarction. In: Japanese Circulation Journal. 1995 ; Vol. 59, No. 5. pp. 274-283.
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