REDUCED EARLY DIASTOLIC EXTENSION IN THE INFARCTED PORTION IN PATIENTS WITH OLD MYOCARDIAL INFARCTION

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概要

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• To study relaxation characteristics of the infarcted myocardium, cyclic changes in the global left ventricular (LV) volume were measured in 20 patients with old myocardial infarction (OMI) and 17 normals (Normal) and those in the regional segment length were measured in 9 patients with anterior old myocardial infarction (anterior OMI) and 11 normals. The LV volume was calculated by using biplane LV cineangiograms. The regional segment length was calculated by measuring the spatial length between the 2 points of the ramifying branches on the left coronary arteries by using biplane coronary cineangiograms. The LV filling volume before atrial contraction (V_R) was significantly less in the OMI compared with that in the normals (Normal 38 ± 6 (mean ± SD) ml/m^2 vs 30 ± 7 ml/m^2 : p < 0.01), while filling volume by atrial contraction (V_a) did not significantly differ (Normal 15 ± 4 ml/m^2 vs OMI 17 ± 5 ml/m^2). The lengthening of the segmental wall during diastole before atrial contraction (%L_R) in the infarcted portion was 5.0 2.9% which was also significantly less than that in the non-infarcted portion (9.6 4.2%). The extent of lengthening by atrial contraction (%L_a) did not differ between the 2 portions (non-infarcted portion 3.8 1.1% vs infarcted portion 3.5 1.2%). Reduction of %L_R was speculated to be caused by the incomplete relaxation in the myocardium adjacent to the infarcted portion and stiff myocardium in the infarcted portion. This study suggests that the infarcted myocardium may lead to a reduction of diastolic expansion before atrial contraction.

• 社団法人日本循環器学会の論文
• 1988-05-20

著者

• Ohno Makoto

  The First Department Of Internal Medicine Kinki University School Of Medicine

• Koka H

  First Department Of Internal Medicine Kinki University School Of Medicine

• KATORI Ryo

  First Dept. of Inter. Med Tohoku Univ. School of Med.

• ISHIKAWA Kinji

  First Dept. of Inter. Med Tohoku Univ. School of Med.

• OGAWA Iwao

  Shiroyama Hospital

• OGAWA Iwao

  First Department of Internal Medicine,Kinki University School of Medicine

• KANAMASA Ken

  First Department of Internal Medicine,Kinki University School of Medicine

• MORISHITA MASATAKA

  First Department of Internal Medicine, Kinki University School of Medicine

• Oda Akio

  First Department of Medicine, Kinki University School of Medicine

• Kadowaki Hiroyuki

  First Department of Medicine, Kinki University School of Medicine

• Kanamasa Ken

  近畿大学 医学部高血圧・老年内科部門

• Morishita Masataka

  Division Of Cardiology Department Of Internal Medicine Kinki University School Of Medicine

• Ishikawa Kinji

  First Department Of Internal Medicine Kinki University School Of Medicine

• Kato A

  First Department Of Internal Medicine Kinki University

• Katori Ryo

  First Department Of Internal Medicine Kinki University School Of Medicine

• Ono Makoto

  The First Department Of Internal Medicine Kinki University School Of Medicine

• Oono Makoto

  First Department Of Internal Medicine Kinki University School Of Medicine

• ONO MAKOTO

  First Department of Internal Medicine, Kinki University School of Medicine

• Okayama Akihiko

  First Department Of Internal Medicine Kinki University School Of Medicine

• Ogawa I

  Shiroyama Hospital

• Oono Makoto

  The First Department Of Internal Medicine Kinki University School Of Medicine

• Kadowaki Hiroyuki

  First Department Of Internal Medicine Kinki University School Of Medicine

• Oda A

  Kinki Univ. Osaka Jpn

• Katori Ryo

  The First Department Of Internal Medicine Kinki University School Of Medicine Osaka

• OGAWA Iwao

  First Department of Internal Medicine, Kinki University School of Medicine

• KANAMASA Ken

  First Department of Internal Medicine, Kinki University School of Medicine

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