Respiratory Failure

Type I Respiratory failure:
causes:
Alveolar flooding:

1. pneumonia
2. pulm edema,embolism and fibrosis
3. pneumothorax
4. ARDS
5. aspiration
6. lung collapse
7. asthma
8. blunt chest trauma
9. diseases of vasculatures rt to lft shunts
10. lymphangitis carcinomatosa

Type II respiratory failure:
alveolar hypoventilation:

1. upper airway obstruction(edema,infection ,foreign body)
2. decrease in central respiratory drive(head injury,meningitis and drug overdose)
3. COPD
4. impaired respiratory muscle function(myasthenia gravis,polio,kyphiscoliosis)
5. flail chest

Type III respiratory failure:

1. perioperative respiratory failure resulting due to lung atelectasis

Type IV respiratory failure:

1. hypoperfusion of respiratory muscles in shock.....