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03-18-2009, 10:21 AM
Ventilation tests
causes of hypoventilation:
Chronic bronchitis
Restrictive Obstructive Bronchial asthma.
Asthmatic bronchitis

Lung fibrosis Pleural effusion Pneumothorax

Neurological causes of hyporventilation :
- Myasthenia gravis - G. Barre $
- Myopathy - R.C. depression

Obstructive hypoventilation

Restrictive hypoventilation
vital capacity mild
FEV1 marked
residual volume ­­
Normal or increase
Residual volume

Source: Internal Medicine Book of Dr.Osama Mahmoud (Ain Shams University)