Definition of rf Disorders of external respiratory function Pao2<60 mmHg(8.kpa) while breathing air at rest, with or without Paco2 >50 mmHg 6. 67 kpa). judgment standard: PaO2 <60 mmHg, Paco2 >50 mmHg hypotonic hypoxia with(or without) respiratory acidosis
6 Definition of RF Disorders of external respiratory function PaO2 <60 mmHg (8.0kpa) while breathing air at rest, with or without PaCO2 >50 mmHg(6.67kpa). judgment standard: PaO2 <60 mmHg , PaCO2 >50 mmHg hypotonic hypoxia with (or without) respiratory acidosis
respiratory insufficiency: It is a condition in which respiratory function is inadequate to meet body' s needs during exertion However, respiratory failure does so in rest a kind of respiratory insutticiency a severe respiratory insufficiency
7 respiratory insufficiency: It is a condition in which respiratory function is inadequate to meet body’s needs during exertion. However, respiratory failure does so in rest. a kind of respiratory insufficiency a severe respiratory insufficiency
Classification 1. According to blood gas 1) type I(hypoxemic RF): Pao2 <60 mmHg(8.kpa) 2 )type Il(hypercapnic RF) PaO2 <60 mmHg(8.kpa) with PaCo2 >50 mmHg(6.67 kpa
8 Classification 1. According to blood gas: 1) typeⅠ(hypoxemic RF) : PaO2 <60 mmHg (8.0kpa) 2) type Ⅱ (hypercapnic RF) : PaO2 <60 mmHg (8.0kpa) , with PaCO2 >50 mmHg(6.67kpa)
2. According to primary site central peripheral 3. According to duration acute chronic
9 2. According to primary site central peripheral 3. According to duration acute chronic
Section 1 Causes and pathogenesis of respiratory failure
10 Section 1 Causes and pathogenesis of respiratory failure