Induction of ST-Segment Elevation by Regional Myocardial Strech in Normal Canine Hearts in Vivo

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概要

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• The purpose of this study was to evaluate ST-segment elevation induced by regional myocardial stretch without myocardial ischemia in canine hearts. A strain gauge arch (TH-601T) was sutured to the left ventricular epicardium, parallel to the short axis, to shorten the end-diastolic length of the myocardium beneath the arch (stretch zone; SZ) and to produce regional myocardial stretch in each of 6 dogs. An increase in preload caused by altering the height of a saline-filled reservoir affected prolongation or shortening of the myocardium both in the SZ and outside the arch (normal zone; NZ) to increase myocardial stretch. An epicardial electrocardiogam was recorded in both the SZ and the NZ. After suture of the strain gauge arch, the ST segment was elevated in the SZ. An increase in preload augmented stretch during systole in the SZ, resulting in additional ST-segment elevation. These results suggest that regional myocardial stretch itself plays an important role in ST-segment elevation.

• 社団法人日本循環器学会の論文
• 1997-10-20

著者

• Ogawa Satoshi

  Cardiopulmonary Division, Department of Internal Medicine, Keio University School of Medicine

• Takahashi Masando

  Cardiopulmonary Division Departments Of Internal Medicine

• Tani Masato

  Cardiopulmonary Division Department Of Medicine School Of Medicine Keio University

• OGAWA Satoshi

  Keio University School of Medicine

• Iwanaga Shiro

  Cardio-pulmonary Division of Keio University School of Medicine

• Hori Shingo

  Department Of Emergency & Critical Care Medicine School Of Medicine Keio University

• Shimada Megumi

  Department Of Cardiology Kitasato Institute Hospital Kitasato University

• Asakura Keiko

  Cardiopulmonary Division Departments Of Internal Medicine

• Shimada Megumi

  Cardiopulmonary Division, Department of Internal Medicine, Keio University

• Nakamura Yoshiro

  Geriatrics, School of Medicine, Keio University

• Hattori Shigehiko

  Cardiopulmonary Division, Department of Internal Medicine, Keio University

• Iwanaga Shiro

  Cardiopulmonary Division Department Of Internal Medicine Keio University

• Nakamura Y

  Geriatrics School Of Medicine Keio University

• Nishikawa Yasuhiro

  Cardiopulmonary Division Dept. Of Med. School Of Med. Keio Univ.

• Nakamura Yoshiro

  Department Of Internal Medicine School Of Medicine Keio University

• Nakamura Yoshiro

  Geriatrics School Of Medicine Keio University

• Nakamura Yoshiro

  Dept. Of Intern. Med. Keio Univ. School Of Med.

• Hori Shingo

  Department Of Emergency And Critical Care Medicine Keio University Hospital

• Nakamura Yoshiro

  Cardiopulmonary Division Department Of Medicine School Of Medicine Keio University

• Nakamura Yoshiro

  Department Of Internal Medicine Keio University Hoipital

• Iwanaga Shiro

  Cardiopulmonary Division Department Of Internal Medicine Keio University.

• Ogawa Satoshi

  Cardio-pulmonary Division Department Of Medicine Keio University School Of Medicine

• Hattori Shigehiko

  Emergency Medicine

• Hori Shingo

  Department Of Medicine School Of Medicine Keio University

• Nishikawa Yasuhiro

  Department Of Internal Medicine School Of Medicine Keio University

• Hattori Shigehiko

  Cardiopulmonary Division Department Of Internal Medicine Keio University

• Hori Shingo

  Saiseikai Utsunomiya Hospital Dept. Of Endocrinol.

• Iwanaga Shiro

  Non-invasive Cardiology Laboratory Department Of Laboratory Medicine Keio University Hospital

• Nishikawa Yasuhiro

  Cardiopulmonary Division Department Of Medicine Keio University School Of Medicine

• Shimada Megumi

  Cardiology Division Department Of Medicine Keio University Scool Of Medicine

• Iwanaga Shiro

  Department Of Medicine

• Takahashi Masando

  Cardiopulmonary Division Department Of Internal Medicine Keio University

• Hori Shingo

  Department Of Medicine Keio University

• Shimada Megumi

  Cardiopulmonary Division Department Of Internal Medicine Keio University

• Hori Shingo

  Cardiopulmonary Division Department Of Internal Medicine School Of Medicine Keio University Tokyo

• Nakamura Yoshiro

  Cardiopulmonary Division. Department Of Internal Medicine Keio University

• Nakamura Yoshirou

  Cardiopulmonary Division. Department Of Internal Medicine Keio University

• Shimada Megumi

  Department Of Cardiology Kitasato Institute Hospital Kitasato University School Of Medicine

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