Determination of Cardiac Output by Earpiece Dye-Dilution Technique at Rest and during Exercise
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- WATANABE Tan
- Cardiovascular Institute
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- KATO Kazuzo
- Cardiovascular Institute
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- WATANABE Hiroshi
- Cardiovascular Institute
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- KOYAMA Shintaro
- Cardiovascular Institute
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(1) A comparative study on determination of cardiac output by simultaneously recorded earpiece and brachial arterial cuvette curves was made on 23 subjects, both in resting state and during leg-exercise on a bicycle ergometer.<br>(2) The values for resting cardiac output were well agreed in both methods, with close correlation and no deviation of regression line from unity.<br>(3) Relative cardiac output during exercise determined by both methods were compared in terms of percentage value of the reciprocal of area under the curves, in comparison to each resting value. Close correlation was again obtained between the values by the 2 methods. Although there was a minor tendency for less increases in cardiac output by the earpiece method during exercise, the difference between the values by the 2 methods was small enough to be disregarded for the practical purpose. The physiological reaction of the ear capillaries to exercise may be suggested to contribute in part to this difference.<br>(4) It was concluded that with the use of a reliable equipment and with careful preparations before procedure, the earpiece indicator-dilution technique offers a potential promise in evaluation of the central circulation of the human beings in both resting and working state.
収録刊行物
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- Japanese Heart Journal
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Japanese Heart Journal 7 (3), 235-243, 1966
International Heart Journal刊行会
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詳細情報 詳細情報について
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- CRID
- 1390001205042208512
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- NII論文ID
- 130000768517
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- NII書誌ID
- AA00690786
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- ISSN
- 1348673X
- 00214868
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- NDL書誌ID
- 8510795
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- PubMed
- 5328379
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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