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      Coronary Angiographic Features within 48 Hours from Onset of Non-Q Wave Myocardial Infarction with R Wave Regression and No ST Segment Depression

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          Abstract

          The clinical features of acute non-Q wave myocardial infarction (NQMI) with R wave regression and no ST segment depression are distinct from those of acute Q wave myocardial infarction (QMI). NQMI patients showed ST segment elevation at admission, and significantly earlier regression of the ST segment elevation and appearance of coronary T waves were observed compared to QMI patients. In addition to the significantly lower level of mean peak serum creatine kinase activity and the significantly lower incidence of pump failure during the acute phase, the incidences of in-hospital mortality and multivessel disease were significantly lower in the NQMI patients. With respect to acute-phase coronary angiographic features within 48 h after the onset, the rate of spontaneous opening of infarct-related vessels was significantly higher in the NQMI patients. Thirteen of the 19 NQMI patients responded to urokinase infusion. These facts suggest that transient, intermittent or incomplete obstruction may favor this type of NQMI over QMI, and that thrombus might be an important factor in the pathogenesis of this type of NQMI.

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          Author and article information

          Journal
          CRD
          Cardiology
          10.1159/issn.0008-6312
          Cardiology
          S. Karger AG
          0008-6312
          1421-9751
          1990
          1990
          12 November 2008
          : 77
          : 2
          : 121-129
          Affiliations
          aDivision of Cardiology, Sakurabashi-Watanabe Hospital and bThe Third Department of Internal Medicine, Osaka University Medical School, Osaka, Japan
          Article
          174592 Cardiology 1990;77:121–129
          10.1159/000174592
          2118828
          © 1990 S. Karger AG, Basel

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          Page count
          Pages: 9
          Categories
          Original Paper

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