Quiz 1 Flashcards
What temp should the OR be kept at according to the Joint Commission?
75 F or 24 C
What are some interventions for preventing hypothermia?
Bair hugger, room temp, fluid warmers, low flows on machine, minimize skin exposure
What role does humidity play in the OR and what is recommended relative humidity?
decreases likelihood of static discharges; 50%
What is Ohm’s law in terms of electricity?
E=IxR (I is current in amperes, R is resistance)
To achieve electrical shock, one must contact the circuit at…
2 points
What is the maximum electricity leakage of OR equipment?
10 microamps
What are the 4 primary processes for heat loss?
radiation, convection, conduction, evaporation
Which mechanism is the most significant of heat loss by our bodies?
radiation
What is convection in terms of heat loss?
bodies transfer kinetic energy to air molecules on surface of skin- heated molecules rise and are replaced with colder air molecules
What is conduction (heat loss)? What population is especially susceptible?
transfer of heat by physically touching a less warm object; pediatrics (large BSA to mass)
What is evaporation?
phase change from liquid to gas requiring energy (sweat, surgical prep agents)
Vapor pressures and boiling points are ? related
inversely
What are volatile liquids?
liquids that have high vapor pressures at room temperature
What is the VP of iso, sevo, and des, respectively?
238, 160, 660
What is the difference between evaporation and vaporization?
evaporation does not require heat for liquid to turn into gas
What are the 3 requirements for fire?
flammable agent, source of ignition, gas that supports combustion
Which gases support combustion?
oxygen and nitrous oxide
What should you do in the event of airway fire?
stop ventilation, disconnect circuit, remove ETT, pour water/saline down pharynx, BMV until new airway established
What are some ways to prevent OR fire?
titrate FiO2 to minimum amount necessary, avoid use of N2O, vent excess O2 from under drapes/tenting
If a patient had a stent placed, how long are they not eligible for outpatient surgery?
6 weeks (bare metal), 1 year (drug eluding)
What is S.A.F.E. anesthesia?
Short acting fast emergence