Hypoxia aPartial pressure of oXygen,( PO2) Definiens】 PO2 is the pressure or tension caused by oxygen physically Dissolved in the blood 【 norma|vaue】 Pao2: 13 3kPa(100mmHg): PvO2: 5.32kPa(40mmHg) Influence】 吸入空气的p○2、肺的呼吸功能、静脉血掺杂程度。 Significance】 PaO2高低直接影响动脉血氧含量(O2与Hb结合)、血氧饱和度、 氧弥散速度
■Partial pressure of oxygen, ( PO2 ) 【Definiens】 PO2 is the pressure or tension caused by oxygen physically Dissolved in the blood. Hypoxia 【Significance】 PaO2高低直接影响动脉血氧含量(O2与Hb结合)、血氧饱和度、 氧弥散速度。 【Normal value】 PaO2 : 13.3kPa(100mmHg);PvO2 : 5.32kPa(40mmHg)。 【Influence】 吸入空气的pO2、肺的呼吸功能、静脉血掺杂程度
Hypoxia oXygen binding capacity, CO2max Definiens】 CO, max Is the maximum amount of oxygen combined by Hb in 100ml blood under fully saturated condition in which the PO2 is 150mmHg, PCO2 40mmHg, and the tem perature is 38C. Normal value】 CO2 max: 8.92mmol/L (1.34ml/gx 15gHb% Influence】 =20m%)。 Hb的质(Hb结合氧的能力)和量 Significance】 血氧容量大小反映血液携氧能力( Oxygen-carrying capacity)
■Oxygen binding capacity, CO2max 【Definiens】 CO2max Is the maximum amount of oxygen combined by Hb in 100ml blood under fully saturated condition in which the PO2 is 150mmHg, PCO2 40mmHg, and the temperature is 38℃. 【Significance】 血氧容量大小反映血液携氧能力(Oxygen-carrying capacity)。 【Normal value】 CO2max: 8.92mmol/L (1.34ml/g×15gHb% 【Influence】 =20ml%)。 Hb的质(Hb结合氧的能力)和量 Hypoxia
Hypoxia oXYgen content( Co2) Definiens】 The total amount of oxygen contained actually in 100 ml blood sample, including the part combined with Hb and the part physically dissolved in plasma norma|vaue】 caO2约847mmoM(193m%);CO2为535mmoL(14m%) Significance】 提示血液实际供氧水平。 PFcc co Influence】 PaO2&cO2max。 心空令
■Oxygen content ( CO2 ) 【Definiens】 The total amount of oxygen contained actually in 100 ml blood sample, including the part combined with Hb and the part physically dissolved in plasma. 【Significance】 提示血液实际供氧水平。 【Normal value】 CaO2约8.47mmol/L(19.3ml%);CvO2为5.35mmol/L(14ml%)。 【Influence】 PaO2 & CO2max。 Hypoxia
Hypoxia A-VdO2 Definiens】 The difference value is between arterial and venous blood oxygen content Significance】 反映100m血液流经组织时所提供的氧量或组织细胞利用氧量 【 Norma|vaue】 AvdO2通常为2.23~357mmoL(⑤5m%~8m%) 19ml/dl 14m/dl A O2,O 5mld
19ml/dl 14ml/dl 5ml/dl A O2 O2 O2 O2 O2 O V 2 ■A-VdO2 【Definiens】 The difference value is between arterial and venous blood oxygen content. 【Significance】 反映100ml血液流经组织时所提供的氧量或组织细胞利用氧量。 【Normal value】 A-VdO2通常为2. 23~3.57mmol/L(5ml%~8ml%)。 Hypoxia
Hypoxia oXygen saturation, sO2 【 Definiens】 The degree of connected 1g Hb to oxygen SO2%=CO2-O2 dissolved physically in plasma/CO2max (Normal value) P sao2:93%~98%; p↑}左移 80}温度↓ P SvO2:70%~75% 右移{pH↓ 蛋 Significance) 温度 饱 反映Hb与氧的结合程度。° Influence】 0 Pao2 Po,27538.0107133160kPa 0 4 100 120 mmh Factors affecting oxygen dissociation curve
■Oxygen saturation, SO2 【Definiens】 The degree of connected 1g Hb to oxygen SO2% = CO2 – O2 dissolved physically in plasma/ CO2max 【Normal value】 SaO2:93%~98%; SvO2:70%~75%。 【Significance】 反映Hb与氧的结合程度。 【Influence】 PaO2。 Factors affecting oxygen dissociation curve Hypoxia