oxygen (吸氧).ppt

Oxygen Therapy
氧气疗法
Contents
Classification of Hypoxia(缺氧)
Level of Hypoxia
Indication of Oxygen Therapy
Sources of Oxygen
Methods of Oxygen Delivery
Implementation of Oxygen Therapy
Complications of Oxygen Therapy
Hypoxia: Deficiency in the amount of oxygen reaching body tissues
Objectives
State indications of oxygen therapy
Expatiate on precautions of oxygen therapy
State different sources of oxygen and
methods of oxygen delivery
Demonstrate the procedure of administering
oxygen therapy by nasal tube correctly
plications of oxygen therapy and
expatiate how to prevent
Oxygen Therapy
Purpose:
Raise PaO2,SaO2,and CaO2
Prevent or relieve hypoxia
Promote metabolism(新陈代谢)
氧气疗法是指通过给氧,提高动脉血氧分压(Pa02)和动脉血氧饱和度(Sa02),增加动脉血氧含量(Ca02),纠正各种原因造成的缺氧状态,促进组织的新陈代谢,维持机体生命活动的一种治疗方法。
O2
CO2
O2
CO2
Lung
Circulatory system
External respiration
Gas transport
Internal respiration
Cells
Function of Respiration
Classification
Characteristics
Causes
Hypotonic ~
(低张性缺氧)
PaO2 CaO2
High altitude disease,
COPD, Heart disease
Hemic ~
(血液性缺氧)
Inadequate or alterations of quality of hemoglobin
Anemia(贫血), CO poisoning
Circulatory ~
(循环性缺氧)
Poor tissue perfusion with oxygenated blood
Shock, Heart failure
Histogenous ~
(组织性缺氧)
Inability of tissues to extract oxygen from blood
Cyanide poisoning (氰化物中毒)
Classification of Hypoxia
Indication of Oxygen Therapy
Hypotonic hypoxia: the best
Oxygen therapy may have effect on clients with heart failure, shock, severe anemia, or carbon monoxide poisoning.
Level of Hypoxia
Level
Cyanosis
(紫绀)
Dyspnea
(呼吸困难)
Conscious-ness
血气分析
PaO2
(mmHg)
SaO2
(﹪)
Mild ~
(轻度缺氧)
no
no
slight
clarity
Moderate ~
(中度缺氧)
have
have
normal or
fidget
Severe ~
(重度缺氧)
severe
severe
coma
>50
>80
<30
<60
60~80
30~50
Index of Oxygen Therapy
Mild hypoxia: not indicated for client
Moderate hypoxia: need oxygen therapy
Severe hypoxia: absolute indication