Turn Up the Heat
equation for converting degrees Celsius to degrees Farenhiet
F = (9/5)C + 32
methemoglobinemia will display this SpO2 reading
85%
color of oxygen, air, and nitrous oxide cylinders
green (oxygen), yellow (air) + blue (nitrous oxide)
Mapleson A
example of an ANechoic structure
artery or vein (blood vessel)
gold standard site for monitoring core temperature
pulmonary artery
wavelengths at which red + infrared light are absorbed
660 nm (red) + 940 nm (infrared)
safety system that prevents the improper connection of gas cylinders with the yoke of the anesthesia machine
pin index safety system
Where deadspace within the circle breathing system is located
type of US probe that has low frequency, deep tissue penetration, + limited resolution
curvelinear probe
4 sources of heat loss
radiation, convection, evaporation + conduction
3 factors that can affect SpO2 readings
shivering, seizures, movement, nail polish (blue, green, black), CO, methylene blue/IV dyes, low perfusion, improperly placed probes, peripheral vasoconstriction
flow rate at which oxygen is delivered through the oxygen flush valve (O2 flush valve)
35-75 L/min
4 components within the circle breathing system
CO2 absorber, fresh gas inlet, inspiratory + expiratory unidirectional valves, inspiratory + expiratory breathing limbs, Y-connector, APL valve, reservoir bag
the conversion of ultrasound waves to heat
absorption
the MOST important factor to reduce heat loss from radiation + convection
type of capnograph that can be used for both sedation cases and general anesthetics with a breathing device
sidestream capnograph
4 components of the low pressure system within the anesthesia machine
flowmeters, vaporizers, one-way check valve + common gas outlet (CGO)
component of the circle breathing system that adds heat + moisture
CO2 absorber
increasing this function will amplify the returning US signal
increasing the gain
phase of intraoperative hypothermia involving the induction of general anesthesia and shift of heat from the core to the periphery
redistribution phase
level at which an arterial line transducer should be placed when the patient is in the sitting or beach chair position
external acoustic meatus
pressure at which oxygen is reduced to after passing through the 2nd stage pressure regulator in the intermediate pressure system
16 psi
the combination of this CO2 absorber + volatile anesthetic can produce carbon monoxide
Baralyme + desflurane
4 things that can happen to US waves as they travel through tissue
absorption, reflection, scattering, transmission