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Prognostic values of perfusion-metabolic mismatch in Tl-201 and BMIPP scintigraphic imaging in patients with chronic coronary artery disease and left ventricular dysfunction undergoing revascularization

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Abstract

Objectives: The aim of this study was to assess the prognostic value of the amount of perfusion-metabolic mismatch in revascularized patients with left ventricular (LV) dysfunction by means of Thallium (Tl)-201 and BMIPP imaging.Methods: Seventy-six patients with LV dysfunction and coronary artery disease underwent Tl-201 and BMIPP imaging. They were revascularized with either coronary artery bypass graft or balloon angioplasty and were entered into this study. To quantify the amount of perfusion-metabolic mismatch, SPECT images were displayed as polar maps and analyzed semiquantitatively. The patients were followed up for a mean period of 32 months for cardiac mortality and non-fatal cardiac events. Standard follow-up left ventriculography was performed 6 to 12 months after revascularization.Results: Thirty-two patients exhibited a large amount of perfusion-metabolic mismatch (≥7 segments, group A), 28 patients had a small amount of perfusion-metabolic mismatch (2 to 6 segments, group B), and 16 patients were found to have no perfusion-metabolic mismatch (group C). Similar pre-revascularization LVEF of 35±5%, 34±8% and 36±6% increased to 45±8% (p<0.0001), to 38±8% (p<0.05), and to 36±3% (n.s.), respectively, after revascularization. The functional improvement after revascularization in group A was accompanied by a low rate of cardiac events during follow-up and better cardiac event free survival as judged by the Kaplan-Meier method (p<0.05, vs. group B and C).Conclusion: In revascularized patients with severe LV dysfunction, the presence of a large amount of perfusion-metabolic mismatch evaluated by Tl-201 and BMIPP imaging identifies patients with the best prognosis.

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Authors and Affiliations

  1. Division of Cardiology, Funabashi Municipal Medical Center, 1-21-1, Kanasugi, 273-8588, Funabashi, Chiba, Japan

    Shigeru Furuzawa, Shun Ozawa, Kazuhiro Shimada, Juji Sugioka & Masayuki Inagaki

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  1. Shigeru Furuzawa
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  2. Shun Ozawa
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  3. Kazuhiro Shimada
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  4. Juji Sugioka
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  5. Masayuki Inagaki
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Correspondence to Shigeru Furuzawa.

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Furuzawa, S., Ozawa, S., Shimada, K. et al. Prognostic values of perfusion-metabolic mismatch in Tl-201 and BMIPP scintigraphic imaging in patients with chronic coronary artery disease and left ventricular dysfunction undergoing revascularization. Ann Nucl Med 16, 109–115 (2002). https://doi.org/10.1007/BF02993713

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  • DOI: https://doi.org/10.1007/BF02993713

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