Abbreviated as Ht, it is also called packed cell volume (PCV). It is a percentage value that represents the volume ratio of blood cell components to whole blood. Normally, it is within a certain range (generally 45 (40-50)% for men, 40 (35-45)% for women), but in anemia, the hematocrit value decreases due to a decrease in red blood cells. Therefore, the hematocrit value is one measure of the presence or absence and degree of anemia. Conversely, the hematocrit value increases in cases of polycythemia, hemoconcentration, etc. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
Htと略記し,また血球容積packed cell volume(PCV)とも称される。血液中の血球成分の全血に対する容積比を百分率で示した数値。正常では一定の範囲内(一般に男45(40~50)%,女40(35~45)%)にあるが,貧血では赤血球が減少するためヘマトクリット値は減少する。したがってヘマトクリット値は貧血の有無・程度の一つの尺度となる。また逆に,多血症,血液濃縮等ではヘマトクリット値は上昇する。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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