Classification of hypoxia (三)循环性缺氧( Circulatory hypoxia) 特征( Feature) 由于组织血流量减少使组织氧供应减少所引起的缺氧,称为循环性 缺氧。循环性缺氧又称为低动力性缺氧。 The blood flow to the tissues is reduced that decrease of deliver oxygen to cells result in hypoxia (Classification) ■缺血性缺氧( Ischemic hypoxia) ■淤血性缺氧( Congestive hypoxia) 2.原因( Causes) ■全身性血流量减少( Generalized circulatory deficiency) ■局部性血流量减少( Local circulatory deficiency)
(三)循环性缺氧(Circulatory hypoxia) 1.特征(Feature) 由于组织血流量减少使组织氧供应减少所引起的缺氧,称为循环性 缺氧。循环性缺氧又称为低动力性缺氧。 The blood flow to the tissues is reduced that decrease of deliver oxygen to cells result in hypoxia. 【Classification】 缺血性缺氧(Ischemic hypoxia) 淤血性缺氧(Congestive hypoxia) 2.原因(Causes) 全身性血流量减少(Generalized circulatory deficiency) 局部性血流量减少(Local circulatory deficiency ) Classification of hypoxia
Classification of hypoxia (四)组织性缺氧( Histogenous hypoxia) 1.特征( Feature) 由于组织、细胞利用氧障碍所引起的缺氧,称组织性缺氧。 The tissue cells cannot make use of oxygen supplied to them because of the action of a toxic agent 2.原因( Causes) (1)氰化物中毒( Cyanide Poisoning) HCN→H+CN→CN+ Cytaa3Fe3→yta3Fe3tCN cell death + interrupt electron transfer in the respiratory chain (2)维生素严重缺乏( Vitamin deficiency) (3)线粒体损伤( Mitochondria injury) (4)组织需氧增加( The need of oxygen in tissues increased)
(四)组织性缺氧(Histogenous hypoxia) 1.特征(Feature) 由于组织、细胞利用氧障碍所引起的缺氧,称组织性缺氧。 The tissue cells cannot make use of oxygen supplied to them because of the action of a toxic agent. 2.原因(Causes) (1)氰化物中毒(Cyanide Poisoning) HCN H+ + CN¯ CN¯+ Cytaa3Fe3+ Cyt aa3Fe3+ -CN¯ cell death interrupt electron transfer in the respiratory chain (2)维生素严重缺乏(Vitamin deficiency) (3)线粒体损伤(Mitochondria injury) (4)组织需氧增加(The need of oxygen in tissues increased) Classification of hypoxia