B3)blood-gas Type I:PaO2↓ Type I:PaO2↓+PaCO2 (4 ) pathogenesis ventilation blood gas exchange: diffusion v/Q anatomy shunt
(3)blood-gas Type I : PaO2 Type II: PaO2 + PaCO2 (4)pathogenesis ventilation blood gas exchange: diffusion V/Q anatomy shunt
Section 1 Etiology and pathogenesis Respiration ventilation gas exchange
Section 1 Etiology and pathogenesis Respiration = ventilation + gas exchange
Mechanism of re 1. Hypoventilation (Restrictive Extralung intralung Central airway (2 )obstructive Pe eripheral airway
1. Hypoventilation Mechanism of RF (1)restrictive ~ (2)obstructive ~ Central airway ~ Peripheral airway ~ Extralung intralung
Ventilation(does work dynamic force overcomes resistant force (elastic nonelastic m) ----physics view
Ventilation (does work) = dynamic force overcomes resistant force (elastic ~ + nonelastic ~) ----physics view
(1) Restrictive MEDULLA CAROTID BODY Major causes: Ⅸ NERVE SPINAL CORD CNS and nerves 6 THORACIC CAGE MUSCLE Respiratory muscles chest wall AIRWAYS and pleura Lung( Alveoli) distension I Alveoli distensibility t
(1) Restrictive ~ Alveoli distensibility Major Causes: CNS and nerves Respiratory muscles, chest wall and pleura Lung( Alveoli) distension