Assessment of Exercise-induced Silent Myocardial Ischemia by Dipyridamole Thallium Imaging. (2). Its Significance in Q wave Myocardial Infarction.

• Jin-nouchi Yosuke

  Department of Medicine & Geriatrics, Kochi Medical School

• Furuno Takashi

  Department of Medicine & Geriatrics, Kochi Medical School

• Yamasaki Fumiyasu

  Department of Medicine & Geriatrics, Kochi Medical School

• Yabe Toshikazu

  Department of Medicine & Geriatrics, Kochi Medical School

• Kitaoka Hiroaki

  Department of Medicine & Geriatrics, Kochi Medical School

• Chikamori Taishiro

  Department of Medicine & Geriatrics, Kochi Medical School

• Kawai Kazuya

  Department of Medicine & Geriatrics, Kochi Medical School

• Doi Yoshinori

  Department of Medicine & Geriatrics, Kochi Medical School

Bibliographic Information

Other Title

• ジピリダモール心筋シンチによる無症候性心筋虚血の評価　（２）　　陳旧性心筋梗塞における検討
• ジピリダモール シンキン シンチ ニヨル ム ショウコウセイ シンキン キョケ
• (2) Its Significance in Q wave Myocardial Infarction
• (2) 陳旧性心筋梗塞における検討

Abstract

The clinical significance of silent myocardial ischemia (SMI) in the elderly was assessed in 91 patients with Q wave infarction who showed ischemic ST depression during treadmill stress testing, as well as reversible defect (RD) during dipyridamole thallium imaging. They were divided into two groups (47 patients with silent ST depression and 44 patients with painful ST depression) and compared for scintigraphic and coronary arteriographic features, and prognosis.<br>There was no significant difference in age, gender and site of infarction between the two groups. The prevalence of single and double vessel coronary stenosis was higher in patients with SMI (66%) than in those with painful ischemia (p<0.05). The results of treadmill stress testing showed a longer exercise duration (4.7±1.7 vs. 4.1±1.8min) and higher maximal heart rate (138±15/vs. 126±20/min) in patients with SMI than in those with painful ischemia (p<0.01). Dipyridamole thallium imaging revealed a larger infact (18.8±9.1 vs. 14.6±10.2 segments) in patients with SMI than in those with painful ischemia (p<0.05). The prevalence of RD in the area of infarction was also higher in patients with SMI (74%) than in those with painful ischemia (45%) (p<0.05). Although a higher proportion of the patients with painful ischemia (42%) underwent CABG or PTCA as their inital therapy, compared with those with SMI (25%) (ns), there was no difference in the cardiac event rate between the two groups who were initially treated medically.<br>Dipyridamole thallium imaging is useful in the assessment of SMI in elderly patients with Q wave myocardial infarction. Those with SMI may have a larger infarct and a higher prevalance of ischemia localized within the infarction than those with painful ischemia.

Journal

• Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics

  Nippon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics 35 (3), 220-224, 1998

  The Japan Geriatrics Society

Keywords

• Silent myocardial ischemia
• Q wave myocardial infarction
• Dipyridamole thallium imaging
• Size of infarction
• Elderly

Details

• CRID: 1390001205021405056
• NII Article ID: 130003652411
• NII Article ID: 10008481656
• NII Book ID: AN00199010
• DOI: 10.3143/geriatrics.35.220
• NDL BIB ID: 4460513
• ISSN: 03009173
• PubMed: 9597882
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4460513
• Web Site: https://search.jamas.or.jp/link/ui/1998183934
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed