hypoxia 王婧婧 山东大学医学胱病理生理学教研宣
王婧婧 山东大学医学院病理生理学教研室
氧气的获得和利用: Alveolar G as Tissue air alveoli capillary transport cells ventilation gas exchange internal respiration external respiration Laryngopharynx caring Left and right ower
氧气的获得和利用: ventilation gas exchange internal respiration external respiration air alveoli Alveolar capillary Gas transport Tissue cells
o Concept 运遂氧或利用氧发生障碍肘,机体发生 功能、代谢、形态结构改叟的病理过程 Tissue cells cant obtain enough oxygen or cant fully utilize oxygen→ metabolic, functional and structural changes
Concept 运送氧或利用氧发生障碍时，机体发生 功能、代谢、形态结构改变的病理过程. Tissue cells can’t obtain enough oxygen or can’t fully utilize oxygen→ metabolic, functional and structural changes
o Parameters of blood gas 1. Partial pressure of o2(PO2) 2.02 capacity CO2 max 3. 0 content (CO) 4.02 saturation (SO2)
Parameters of blood gas 1. Partial pressure of O2 （PO2） 2. O2 capacity （ CO2 max ） 3. O2 content（CO2） 4. O2 saturation （ SO2 ）
1. Partial pressure of O,(PO,) 溶解在血液中的氧所产生的张力。 The pressure or tension produced by physically dissolved o2 in the blood NormaI: Pao2: 100 mmHg Influenced by: the oxygen pressure in the inhaled air extra-respiration Normal:PⅴO2:40 mmhs Influenced by intra-respiration
1. Partial pressure of O2（PO2） 溶解在血液中的氧所产生的张力。 The pressure or tension produced by physically dissolved O2 in the blood. Normal: PaO2 : 100 mmHg 吸入气氧分压 Influenced by: the oxygen pressure in the inhalied air extra-respiration Normal: PvO2 : 40 mmHg Influenced by intra-respiration