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Obstructive Pulmonary Disease
eg. COPD, asthma

broncho-constriction or inflammation leading to inability to take in enough air
Diffusion Pulmonary Disease
eg. edema (heart failure, pneumonia) or circulatory failure (MI, shock, embolus)

gas can't diffuse at alveoli due to lack of perfusion
Restrictive Pulmonary Disease
eg. fibrosis, pneumothorax, hemothorax

Lung can't expand or ventilate
Ventilation Pulmonary Disease
eg. Depressants (narcotics, benzodiazepines, barbituates, alcohol) or CNS disruption (stroke, seizure, tumour, trauma)

loss of CNS control of respiratory system
orthopnea
dyspnea while lying down due to fluid accumulation
pursed lip breathing
increases pressure of inspiration to keep airways open
wheeze
whistling sound on expiration due to high air turbulence
wet cough
excess fluid cough
stridor
harsh inspiratory sound due to obstruction
fine crackles
paper tearing sound due to fluid in small airway
course crackles
sucking last bit of liquid from straw sound due to flui in large airway
dry cough
irritated cough
Chest XRAY
fluid and bones absorb xray and appear white on screen. helps locate edema
Perfusion Scan
See which parts of lung blood can go
Ventilation Scan
See where air can go in lungs
Pulmonary Angiography
Locate embolus
CT scan (Spiral Computed Axial Tomography)
find tumours
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