I pulmonary ventilation disturbance i. Types and causes restrictive hypoventilation .obstructive hypoventilation
12 Ⅰ.pulmonary ventilation disturbance i. Types and Causes restrictive hypoventilation obstructive hypoventilation
Causes of rf Disorders of Central Nervous System pinal col Neuromuscular System le chest wall and pleura the airway
13 • Causes of RF Disorders of: Central Nervous System Spinal Cord Neuromuscular System the chest wall and pleura the airway
component elements causing ventilation disturbance Airway thorax wall straitness damaged or block Inhibition of R. center Lung elastic High spinal resistance coro increased damaged weakness Anterior angle cel damaged phrenic nerve damaged 14
14 component elements causing ventilation disturbance Lung elastic resistance increased High spinal cord damaged Anterior angle cell damaged Inhibition of R. center phrenic nerve damaged weakness of R. M thorax wall damaged Airway straitness or block
1. Restrictive hypoventilation: Causes and mechanisms. 8o impaired activity of respiratory muscle( dysfunction of CNS neural. muscle etc 8o decreased compliance of thorax( chest malformation pleura fibrosis) 8o decreased compliance of lungs(pulmonary edema inflammation, fibrosis insufficient surfactant o thorax fluidify or pneumothorax
15 Causes and mechanisms: ❖ impaired activity of respiratory muscle (dysfunction of CNS, neural, muscle etc.) ❖ decreased compliance of thorax (chest malformation , pleura fibrosis) ❖ decreased compliance of lungs (pulmonary edema , inflammation , fibrosis, insufficient surfactant) ❖ thorax fluidify or pneumothorax 1. Restrictive hypoventilation:
2. Obstructive hypoventilation central airway obstruction peripheral airway obstruction
16 2. Obstructive hypoventilation : central airway obstruction peripheral airway obstruction