MED GAS FINAL EXAM QUESTIONS AND ANSWERS  

MED GAS FINAL EXAM QUESTIONS
AND ANSWERS

, colored tanks of different gases
carbon dioxide
O2
Helium
Air
Nitrogen - ANSWERSCarbon dioxide - Gray
O2 - green
Helium - brown
Air - yellow
Nitrogen - black

O2 characteristics - ANSWERScolorless, odorless, combustable, cheapest, largest,
fractional distillation/ physical separation

Air characteristics - ANSWERS21% O2
79% Nitrogen
colorless, odorless

CO2 (carbon dioxide) characteristics - ANSWERScolorless, odorless, not flammable,
not combustable, used in labs

Helium characteristics - ANSWERScolorless, odorless, not flammable, good for asthma
b/c lighter through airways-> flowmeters cannot calculate (less dense) (uncompensated)

Nitrous Oxide (N2O) characteristics - ANSWERSsweet odor, for anesthesia, mixed with
20% O2

Nitric Oxide (NO) characteristics - ANSWERSsupports combustion, cause
methemoglobinemia

Oxygen is commonly stored in what forms? - ANSWERSgas and liquid form

gas cylinders are what (6) - ANSWERSfor small volumes of gas
prevents waste of O2
stored Indefinitely
costly
difficult to be active
used for backup

liquid O2 is what? (9) - ANSWERS1 cubic foot = 860 cubic feet gas
low pressure
filled from reservoir
0.5-8 l/m