| English |
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| Title | The Reproducibility and Variability of Sequential Left Ventricular Ejection Fraction Measurements by the Nuclear Stethoscope |
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| Subtitle | Original Articles |
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| Authors | Chinori KURATA*, Hideharu HAYASHI*, Akira KOBAYASHI*, Noboru YAMAZAKI* |
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| Organization | *The Third Department of Internal Medicine, Hamamatsu University School of Medicine |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 23 |
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| Number | 8 |
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| Page | 993-998 |
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| Year/Month | 1986/8 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Abstract] : We evaluated the reproducibility and variability of sequential left ventricular ejection fraction (LVEF) measurements by the nuclear stethoscope in 72 patients. The group as a whole demonstrated excellent reproducibility (r=0.96) . However, repeat LVEF measurements by the nuclear stethoscope at 5-minute interval showed around 9% absolute difference, at 95% confidence levels, from one measurement to the next. The finding indicates that a change in LVEF greater than 9% is necessary for determining an acute effect of an intervention in individual cases. |
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| Practice | Clinical medicine |
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| Keywords | Nuclear stethoscope, Left ventricular ejection fraction, Reproducibility, Sequential, Variability. |
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| Japanese |
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| Title | 核聴診器を用いた左室駆出率の繰り返し測定における再現性と変動域の評価 |
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| Subtitle | 《原著》 |
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| Authors | 倉田千弘, 林秀晴, 小林明, 山崎昇 |
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| Authors(kana) | |
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| Organization | 浜松医科大学第三内科 |
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| Journal | 核医学 |
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| Volume | 23 |
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| Number | 8 |
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| Page | 993-998 |
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| Year/Month | 1986/8 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」: われわれは, 核聴診器によって左室駆出率を繰り返し測定した場合の再現性と変動域について, 72症例を対象として検討した. 全体としての再現性は, 相関係数が0.96と非常に良好であった. しかし, 5分間隔での繰り返し測定での変動域は, 直線回帰分析を用いた95%信頼限界で約9%と決して小さくない値であった. したがって, 個々の症例において, 薬剤投与や運動負荷などによって左室駆出率が9%以上変動してはじめて, 有意な効果であると判定できると考えられる. |
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| Practice | 臨床医学：一般 |
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| Keywords | Nuclear stethoscope, Left ventricular ejection fraction, Reproducibility, Sequential, Variability. |
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