Partial pressure of oxygen, PO2PO2 is the pressure or tension caused by oxygenphysically dissolved in the blood.PaO: The partial pressure of oxygen in the plasma phase of arterial blood.The Pao2 gives us valuable information about adequacy of gas exchangewithin the lungs, when it is subtracted from the calculated alveolar PO2.PvO2: The partial pressure of oxygen in the plasma phase of venous blood.The PvO2 is determined by whole body oxygen demand, and the capacity ofthe tissues to extract oxygen.【Normal value】PaO2:13.3kPa(100mmHg);PvO2:5.32kPa(40mmHg)。Anhui Medical university
Anhui Medical university 【 Partial pressure of oxygen, PO2 】 PO2 is the pressure or tension caused by oxygen physically dissolved in the blood. 【Normal value】 PaO2 : 13.3kPa(100mmHg)；PvO2 : 5.32kPa(40mmHg)。 PaO2 : The partial pressure of oxygen in the plasma phase of arterial blood. The PaO2 gives us valuable information about adequacy of gas exchange within the lungs, when it is subtracted from the calculated alveolar PO2. PvO2 : The partial pressure of oxygen in the plasma phase of venous blood. The PvO2 is determined by whole body oxygen demand, and the capacity of the tissues to extract oxygen
[Oxygen binding capacity, CO2max】CO,max Is the maximum amount of oxygen combined byHb in 1oOml blood under fully saturated condition inwhich thePO2is 150mmHg,PCO,40mmHg,and thetemperature is38℃.【Normalvalue】CO2max:8.92mmol/L（1.34ml/gX15gHb%=20ml%)。【Meaning】The ability of Hbtocarry O2Anhui Medical university
Anhui Medical university 【Oxygen binding capacity, CO2max】 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℃. 【Normal value】 CO2max: 8.92mmol/L (1.34ml/g×15gHb% =20ml%)。 【Meaning】 The ability of Hb to carry O2
【Oxygen content, CO2 】The total amount of oxygen contained actually in 100 ml bloodsample, including the part combined with Hb and the partphysically dissolved in plasma.CO2 = PaO, + CO,max。【Normalvalue】CaOz=8.47mmol/L(19.3ml%);CvO,=5.35mmol/L(14ml%)AnhuiMedicaluniversity
Anhui Medical university 【Oxygen content , CO2 】 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. CO2 = PaO2 + CO2max。 【Normal value】 CaO2≈8.47mmol/L(19.3ml%)；CvO2 ≈5.35mmol/L(14ml%)
A-VdO2】The difference value is between arterial and venous blood oxygencontent.【Normalvalue】A-Vd02=2.23~3.57mmol/L(5ml%~8ml%)【Meaning】A-Vd02=volume of 02tissue uptake =Ca02-Cv02AnhuiMedicaluniversity
Anhui Medical university 【A-VdO2】 The difference value is between arterial and venous blood oxygen content. 【Meaning】 A-VdO2 = volume of O2 tissue uptake = CaO2-CvO2 【Normal value】 A-VdO2 ≈ 2. 23～3.57mmol/L(5ml%～8ml%)
【Oxygen saturation, SO2]The percentage of hemoglobin present as oxyhemoglobin【Normal value】Sa02:93%~98%;SvO2:70%~75%S02%=CO2-02dissolvedphysicallyinplasma/CO2max【Influence】PaO2【Meaning】The degree of connected Hb to oxygenAnhui Medical university
Anhui Medical university 【 Oxygen saturation, SO2 】 The percentage of hemoglobin present as oxyhemoglobin 【Meaning】 The degree of connected Hb to oxygen 【Normal value】 SaO2：93%～98%； SvO2：70%～75%。 SO2% = CO2 – O2 dissolved physically in plasma/ CO2max 【Influence】 PaO2