Total Internal Mechanical Work of Ventricle Assessed from Quick Release Pressure-Volume Curve
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- 菅 弘之
- Department of Biomedical Engineering, The Johns Hopkins University School of Medicine
書誌事項
- タイトル別名
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- Total Internal Mechanical Work of Ventr
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抄録
A method is proposed for direct assessment of the total internal mechanical work of the cardiac ventricle from a pressure-volume diagram. First, a quick release pressure-volume curve of the lumped series elasticity of the ventricle is recorded. Next, this curve is transcribed on a pressure-volume loop diagram of a contraction of interst in such a way that the quick release curve passes through the endsystolic pressure-volume data point of the loop. Finally, planimetry of the triangular area bounded by the quick release curve, the isovolumic relaxation segment of the loop and the diastolic pressure-volume curve gives total ventricular mechanical internal work performed on the lumped series elasticity of the ventricle during systole. This method is much simpler and more direct than the conventional analytical method which requires a relatively simple geometric model of the ventricle, a formula for series elasticity with appropriate stiffness constants and a series of mathematical calculations based on many unverified assumptions on the shape, structure and mechanical properties of the ventricle.
収録刊行物
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- The Japanese Journal of Physiology
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The Japanese Journal of Physiology 29 (3), 227-237, 1979
一般社団法人 日本生理学会
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詳細情報 詳細情報について
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- CRID
- 1390282680019186816
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- NII論文ID
- 130003476719
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- NII書誌ID
- AA00691224
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- COI
- 1:STN:280:Bi%2BD2M3lslI%3D
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- ISSN
- 18811396
- 0021521X
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- NDL書誌ID
- 2077526
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- PubMed
- 502085
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可