Pneumothorax and mechanics of breathing Flashcards
to shag the J
At rest how much oxygen is consumed per minute
250ml/min
how much co2 is produced per minute
200ml/min
What are the two factors in the elastic recoil of the lung
Connective tissue fibers
Surface tension forces
What does Ppl, Patm, Palv stand for
Ppl = Pleural pressure Palv = Alveoolar Pressure Patm = atmoospheric pressure
Patm > Palv =
Inspiration
Palv > Patm =
expiration
Palv = Patm =
no airflow
When the diaphragm contracts what happens to the pleural space pressure
it decreases as volume increases
what does the pressure of the intrapleural compare t the intra alveolar pressure
it always remains lower than the intra alveolar pressure
What is airways resistance proportional to
length/radius4
What are the 4 factors to breathing
Tidal volume
Respiratory frequency
lung compliance
airway resistance
What is the pulmonary ventilation equation
PV=VT times f
