chapter6hypoxia-在線瀏覽
2024-12-02 21:58本頁面
【正文】 物理溶解形式 化學(xué)結(jié)合形式 % % PO2 is the tension produced by oxygen molecules physically dissolved in plasma. ◣ Partial pressure of inspired oxygen （吸入氣氧分壓， PiO2 ） ◣ Partial pressure of oxygen in the alveoli (肺泡內(nèi)氧分壓， PAO2 ) Acting factor PaO2： 100 mmHg （ ） PvO2： 40 mmHg （ ） Normal value 2. oxygen binding capacity, CO2max 100ml血液中 Hb所能結(jié)合氧的最大毫升數(shù) Maximal amount of oxygen that can be potentially bound by the haemoglobin is called oxygen binding capacity of haemoglobin. Hb concentration and quality Acting factor Normal value : 20 ml% 100ml血液實際所含的氧量 3. oxygen content, CO2 The total oxygen content of blood includes oxygen that is bound to haemoglobin an physically dissolved in plasma. ① PaO2； ② CO2 max In artery:19ml%； In vein:14ml% Acting factor Normal value 4. oxygen saturation, SO2 血氧飽和度 ＝ 血氧含量 物理溶解氧量 血氧容量 ╳ 100％ SO2 is the percentage of haemoglobin present as oxyhaemoglobin. In artery ： 93－ 95％ In vein ： 70－ 75％ Acting factor： PaO2 Normal value
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