oxygen

Question 1

uses

Answer 1

increase o2 tissue delivery in states of hypoxia
to accelerate reabsorption of plueral gas in pneumothorax
to reduce half life of carboxygenhaemogblobin by competing with CO in CO poisioning

Question 2

mechanism of action

Answer 2

oxygen therapy increases PO2 alveolar gas allowing for more o2 to be distributed to cells via the blood
in pneumothorax this reduces the fraction of n2 alveolar gas and allows it to move out the body

Question 3

interactions

Answer 3

none but can cause dry throat

Question 4

SE

Answer 4

careful in resp failure type 2 or severe copd- this may can resp arrest and lead to co2 build up and therefore resp acidosis
fire safety risk