What can cause symmetrical wheeze
Diffuse small
airway obstruction, as in asthma or COPD
What can cause asymmetrical or localized wheeze
Subtotal
obstruction in a large bronchus - main or lobar bronchus)
Can be a consequence of either endobronchial obstruction (eg due to carcinoma or
foreign body) or exobronchial compression (eg due to large sub-carinal
lymph nodes).
Complete bronchial obstruction is associated with a localised wheeze - true or false
False
By definition there is no airflow so cannot have a wheeze
What does a silent chest in asthma suggest
That there is not be sufficient bronchial
airflow to generate a wheeze
This is a danger
sign of impending ventilatory failure and requirement for assisted
mechanical ventilation
What causes a wheeze
Narrowing of the airways
Can be caused by inflammation
What are the major causes of haemoptysis
Infection
Infarction
Neoplasia
Which infection is associated with rusty
sputum
Pneumococcal pneumonia