Pacing Echocardiography : Regional Wall Motion, Left Ventricular Dimension and R Wave Amplitude in Patients with Angina Pectoris

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概要

• 論文の詳細を見る

• In view of the fact that stable echocardiograms are easily obtained during atrial pacing, pacing echocardiography was performed to evaluate the usefulness for detecting regional wall motion abnormalities during pacing-induced ischemia and to investigate the relationship between changes in the R wave and left ventricular dimension. The patients were 12 cases of angina pectoris (10 of coronary artery disease; CAD, and 2 of coronary patent aortic valvular disease; AVD) and 6 control cases. Simultaneous recording of two-dimensional and M-mode echocardiograms and electrocardiograms was done before, during and after the atrial pacing at increasing heart rate until angina appeared or the heart rate of at least 140/min was reached. In 12 angina cases, angina and ST depression were induced in 10 and 11, respectively. Excursion of the interventricular septum (IVS) decreased during pacing-induced ischemia in 6 of 7 CAD cases, in which the left anterior descending coronary artery was significantly stenosed (more than 75%). Excursion of the left ventricular posterior wall (LVPW) decreased during pacing-induced ischemia in 4 of 7 CAD cases, in which the vessels giving rise to posterior descending coronary artery were significantly stenosed (more than 75%). In 2 AVD cases, excursion of both IVS and LVPW decreased during ischemia. Left ventricular end-diastolic dimension (LVEDD) increased in only 2 angina cases, although R wave amplitude increased in 6 angina cases.In conclusion, echocardiography was of use in detecting decrease in the wall motion during pacing-induced ischemia. In atrial pacing, changes in the R wave amplitude were neither sensitive for detecting pacing-induced ischemia nor reflect the left ventricular dimensional change during ischemia.

• International Heart Journal刊行会の論文

著者

• INOUE Hiroshi

  Second Department of Internal Medicine, Graduate School of Medicine, University of Toyama

• TAKENAKA Katsu

  The Second Department of Internal Medicine

• Kawahara Takashi

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• Mashima Saburo

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• Murayama Masahiro

  Second Department of Internal Medicine, St Marianna University School of Medicine

• MURAO Satoru

  Second Department of Internal Medicine,University of Tokyo

• Inoue Hiroshi

  Second Department Of Internal Medicine Graduate School Of Medicine University Of Toyama

• Takenaka Katsu

  The 2nd Department Of Internal Medicine Faculty Of Medicine University Of Tokyo

• Kawahara Takashi

  Second Department Of Internal Medicine Faculty Of Medicine University Of Tokyo

• HADA Yoshiyuki

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• SAKAMOTO Tsuguya

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• AMANO Keiko

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• Murao Satoru

  Second Department Of Internal Medicine Faculty Of Medicine University Of Tokyo

• Mashima Saburo

  Second Department Of Internal Medicine University.

• UCHIYAMA Iwao

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• TAKENAKA Katsu

  Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo

• YAMAGUCHI Tsuneo

  Second Department of Internal Medicine, University of Tokyo

• ISHIMITSU Toshiyuki

  Second Department of Internal Medicine, University of Tokyo

• Murayama Masahiro

  Second Department Of Internal Medicine St Marianna University School Of Medicine

• Sakamoto Tsuguya

  Second Department Of Internal Medicine University Of Tokyo

• TAKENAKA Katsu

  Second Department of Internal Medicine, University of Tokyo

• KAWAHARA Takashi

  Second Department of Internal Medicine, University of Tokyo

• MURAO Satoru

  Second Department of Internal Medicine, University of Tokyo

• HADA Yoshiyuki

  Second Department of Internal Medicine, University of Tokyo

• UCHIYAMA Iwao

  Second Department of Internal Medicine, University of Tokyo

• AMANO Keiko

  Second Department of Internal Medicine, University of Tokyo

• SAKAMOTO Tsuguya

  Second Department of Internal Medicine, University of Tokyo

• MASHIMA Saburo

  Second Department of Internal Medicine, University of Tokyo

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