TU,
Re airplane example with regards to ventilation, there are other factors such as screening patients making sure they are not symptomatic.
Re decadron vs solumedrol as the steroid of choice. If u peak at the studies they are comparing 6mg if decadron to 125mg of solumedrol. The decadron was not a full loading dose (10 or 12mg). Vs the solumedrol that had full loading doses.