Improvement of Excessive Exercise Ventilation after Coronary Artery Bypass Graft Surgery: Relation with Cardiopulmonary Function and Central Chemosensitivity

• TAKAHASHI Tetsuya

  Gunma Prefectural Cardiovascular Center, Department of Medical Techniques, Rehabilitation Section

• KUMAMARU Megumi

  Gunma Prefectural Cardiovascular Center, Department of Medical Techniques, Rehabilitation Section

• YAMADA Hiromi

  Gunma Prefectural Cardiovascular Center, Department of Medical Techniques, Rehabilitation Section

• TATEISHI Masumi

  Gunma Prefectural Cardiovascular Center, Department of Medical Techniques, Rehabilitation Section

• KOUNO Yuuji

  Gunma Prefectural Cardiovascular Center, Department of Medical Techniques, Rehabilitation Section

• ADACHI Hitoshi

  Gunma Prefectural Cardiovascular Center, Department of Cardiology

• KANEKO Tatsuo

  Gunma Prefectural Cardiovascular Center, Department of Cardiology

• TANIGUCHI Kouichi

  Gunma Prefectural Cardiovascular Center, Department of Cardiovascular Surgery

• NARA Isao

  Kobe Gakuin University, Faculty of Rehabilitation

Bibliographic Information

Other Title

• 冠動脈バイパス術後の運動時換気亢進
• ―心肺機能と中枢性化学受容体反射感受性の影響―

Abstract

The purpose of this study was to determine the relationship between excessive ventilation during exercise and decreased respiratory function such as decreased respiratory muscle strength and decreased vital capacity, central chemosensitivity after coronary artery bypass graft surgery (CABG). Eighteen patients following CABG via median sternotomy performed cardiopulmonary exercise test, pulmonary function test, respiratory muscle strength test, and central chemosensitivity test. Pulmonary function such as vital capacity, forced expired volume in one second and respiratory muscle strength, central chemosensitivity, anaerobic threshold and the slope of minute ventilation (V_E) and carbon dioxide output (VCO₂) (V_E/VCO₂ slope) showed significant improvement after 2-week aerobic exercise training. However, no relationships were found between the improvement of V_E/VCO₂ slope and the improvement of respiratory function. Central chemosensitivity was moderately correlated with V_E/VCO₂ slope, and end-tidal CO₂ pressure (P_ETCO₂) at the respiratory compensation point significantly and strongly correlated with V_E/VCO₂ slope. In conclusion, improvement of pulmonary function did not affect excessive exercise ventilation after CABG. Improvement of excessive exercise ventilation after CABG may result from improvement of cardiac output since P_ETCO₂ at the respiratory compensation point represents cardiac output during exercise.

Journal

• Physical Therapy Japan

  Physical Therapy Japan 32 (5), 319-325, 2005-08-20

  Japanese Society of Physical Therapy

Keywords

• 冠動脈バイパス術
• 換気亢進
• 呼吸機能関連因子

Details

• CRID: 1390001288060811776
• NII Article ID: 110004042738
• NII Book ID: AN10146032
• DOI: 10.15063/rigaku.kj00004037347
• ISSN: 2189602X
• ISSN: 02893770
• Web Site: https://search.jamas.or.jp/link/ui/2005294011
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed