ANSWERS WITH COMPLETE SOLUTIONS VERIFIED LATEST
UPDATE
what is COPD
chronic obstructive pulmonary disease; collection of lung disorders causing limitation to
expiratory airflow
what medication targets are used to manage COPD
anticholinergic, betablockers, corticosteroids, painkillers, smoker management
what are the symptoms of COPD
excessive coughing and sputum, dyspnoea
what are 4 tests to test lung function
spirometer, CO diffusion, arterial blood gas analysis, chest x-ray
what does it mean if 'post' spirometry results don't change
if results don't have a 12% difference/ 200ml then condition is irreversible
what are the 'normal' results in arterial blood analysis
pH - 7.35-7.45
bicarb ions - 24-29 mmol/L
CO2 - 34-45mmHg
O2 - 80-100mmHg
what is the CO diffusing capacity test
tests the capacity of lungs to transfer gas of inhaled air into RBC of pulmonary
capillaries
, which structures have pseudostratified epithelium
trachea, bronchus, bronchioles
difference/similarities in composition between bronchioles and respiratory
bronchioles
respiratory has nerves, both have mucous layer and ciliated cells
function of T1 and T2 pneumocytes
T1 - gas diffusion
T2 - cuboidal, produce surfactant (reduce surface tension), macrophages
which structures have goblet cells
trachea and bronchus
types of airways and function
conducting zone - air movement
respiratory zone - gas diffusion
difference between obstructive and restrictive pulmonary disorders
Obstructive - affect exhalation due to blockage
Restrictive - affect ability to hold air and inhalation due to decreased parenchyma
expansion
what is the nature of asthma
obstructive, reversible condition characterized by varying intensity over time and chronic
airway inflammation
neural role on smooth muscle in respiratory system
M3 cholinergic receptors cause bronchoconstriction, B2 adrenergic receptors cause
bronchodilation