respiratory - patho Flashcards
cellular respiration
- what do respirations have to do with it
gas exchange that occurs at the alveoli
- respirations: where gas exchange is occurring
ventilation
- what system is this controlled by?
movement of air in and out of the lungs
- controlled by the CNS
what does the diaphragm look like at rest
upside down U, inc pressure to blow air out
what does the diaphragm look like while breathing in
flattened, dec pressure so that air can come in
what are the 3 phases of respiration and explain each
- ventilation: ability to move air in and out of the lungs
- perfusion: ability to oxygenate tissue thru blood flow
- diffusion: movement of molecules; gas exchange (high to low concentration)
explain lung compliance and what 2 factors influence it
how “stiff” are the lungs; how good is the ability for the lungs to expand
influenced by:
1. connective tissue (bronchioles)
2. surface tensions (surfactant)
why should we not give an asthmatic pt a cholinergic drug
it will constrict the bronchioles and make it harder for the pt to breathe
what are some diseases of the lower airways
acute bronchitis, asthma, COPD, PNA, cystic fibrosis
what are the 3 parts of COPD
chronic bronchitis, emphysema, repeated severe asthma attacks
what is cystic fibrosis
- what population is this prevalent in
scarring of lung tissue = extensive damage prevents the lung from expanding
- pediatric disease
explain the patho of asthma
response to a trigger –> airway hyper-responsiveness –> inflammation and constriction –> mast cell rupture = release inflammatory cells = severe b.constriction = airway obstruction and b.spasms
chronic inflammation can lead to ___
COPD
how to treat intermittent asthma
- daytime symptoms
- night time symptoms
day: 2x/week or less
night: 1-2x/month or less
how to treat mild persistent asthma
- daytime symptoms
- night time symptoms
day: 3-4x/week
night: 2-4x/month
how to treat moderate persistent asthma
- day symptoms
- night symptoms
AT THIS POINT, SEND TO ER
day: >4x/week or daily
night: 4x/month or more