50 Questions
What type of thermometer is known to be noninvasive and quick?
Infrared thermometer
What is the main disadvantage of Liquid Crystal Thermometers?
There can be a large discrepancy between skin and core temperature
Where are Zero-Heat Flux Thermometers typically used?
In the OR (Operating Room)
What is the main advantage of an Ingestible Telemetric Sensor?
It provides a good correlation with core temperature
Which thermometer type is known to be easily measured with a combination Foley catheter-thermistor probe device?
Bladder temperature
What is the main disadvantage of using bladder temperature to measure core temperature?
It is extremely dependent on urine flow
What is the main advantage of Zero-Heat Flux Thermometers?
They measure tissue temperature below the skin surface
Which thermometer type is known to be stable and accurate to 0.1°C?
Liquid Crystal Thermometers
What is the main benefit of using an Ingestible Telemetric Sensor?
It provides a direct measurement of core temperature
Which thermometer type is known to be less expensive and available in very small sizes?
Liquid Crystal Thermometers
The Zero-Heat Flux Thermometers measure tissue temperature approximately 1–2 cm below skin surface using an insulator probe covered with a ______ to prevent heat flow through insulator
heater
The Ingestible Telemetric Sensor consists of a micro-battery, quartz crystal, communication coil, and circuit board encapsulated in medical-grade epoxy material, with the crystal sensor vibrating at a frequency relative to body temperature, producing a magnetic flux and transmitting signals by radio waves to external ______
receiver
Bladder temperature correlates well with core temperature and is easily measured with a combination Foley catheter-thermistor probe device, but is extremely dependent on urine ______
flow
The Infrared thermometer is known to be noninvasive and quick as it collects radiation emitted by a warm object, commonly used on the ______ or forehead
ear
Liquid Crystal Thermometers, which are stable and accurate to 0.1°C, can be disposable and are commonly applied to the ______
skin
The Ingestible Telemetric Sensor provides a good correlation with core temperature as the crystal sensor vibrates at a frequency relative to body temperature, producing a magnetic flux and transmitting signals by radio waves to an external ______
receiver
Bladder temperature is close to core temperature when urine flow is high, but correlates poorly with core temperature when flow is ______
low
The Zero-Heat Flux Thermometers are found to correlate with pulmonary artery temperature and are typically used to measure tissue temperature approximately 1–2 cm below skin surface using an insulator probe covered with a heater to prevent heat flow through ______
insulator
The Infrared thermometer is known to be noninvasive and quick as it collects radiation emitted by a warm object, commonly used on the ear or ______
forehead
Liquid Crystal Thermometers, which are stable and accurate to 0.1°C, can be disposable and are commonly applied to the ______
skin
Match the thermometer type with its description: This thermometer type is noninvasive and quick, collecting radiation emitted by a warm object, commonly used on the ear or forehead.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Stable and accurate to 0.1°C Zero-Heat Flux Thermometers = Measure tissue temperature approximately 1–2 cm below skin surface Bladder temperature = Correlates well with core temperature
Match the thermometer type with its feature: Known to be easily measured with a combination Foley catheter-thermistor probe device.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Can be disposable and applied to skin Zero-Heat Flux Thermometers = Found to correlate with pulmonary artery temperature Bladder temperature = Easily measured with combination Foley catheter-thermistor probe devices
Match the thermometer type with its advantage: Provides a good correlation with core temperature as the crystal sensor vibrates at a frequency relative to body temperature, producing a magnetic flux and transmitting signals by radio waves to an external receiver.
Infrared thermometer = Noninvasive, quick Ingestible Telemetric Sensor = Good correlation with core temp Zero-Heat Flux Thermometers = Measure tissue temperature approximately 1–2 cm below skin surface Bladder temperature = Correlates well with core temperature
Match the thermometer type with its main disadvantage: Extremely dependent on urine flow.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Can be disposable and applied to skin Zero-Heat Flux Thermometers = Found to correlate with pulmonary artery temperature Bladder temperature = Extremely dependent on urine flow
Match the thermometer type with its main advantage: Stable and accurate to 0.1°C.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Stable and accurate to 0.1°C Zero-Heat Flux Thermometers = Measure tissue temperature approximately 1–2 cm below skin surface Bladder temperature = Correlates well with core temperature
Match the thermometer type with its application: Measure tissue temperature approximately 1–2 cm below skin surface using an insulator probe covered with a heater.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Can be disposable and applied to skin Zero-Heat Flux Thermometers = Measure tissue temperature approximately 1–2 cm below skin surface Bladder temperature = Correlates well with core temperature
Match the thermometer type with its main disadvantage: Large discrepancy between skin & core temp.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Can be disposable and applied to skin Zero-Heat Flux Thermometers = Found to correlate with pulmonary artery temperature Bladder temperature = Large discrepancy between skin & core temp
Match the thermometer type with its main application area: Used in PACU, not OR.
Infrared thermometer = Used in PACU, not OR Liquid Crystal Thermometers = Zero-Heat Flux Thermometers = Bladder temperature =
Match the thermometer type with its correlation feature: Correlates well with pulmonary artery temperature and measures tissue temperature approximately 1–2 cm below skin surface.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Stable and accurate to 0.1°C Zero-Heat Flux Thermometers = Measure tissue temp approximately 1–2 cm below skin surface Bladder temperature = Correlates well with pulmonary artery temp
Match the thermometer type with its measurement method: Patient ingests a silicon-coated 'pill' containing micro-battery, quartz crystal, communication coil, and circuit board encapsulated in medical-grade epoxy material.
Infrared thermometer = Noninvasive, quick Liquid Crystal Thermometers = Stable and accurate to 0.1°C Zero-Heat Flux Thermometers = Measure tissue temp approximately 1–2 cm below skin surface Bladder temperature = Patient ingests a silicon-coated 'pill'
Liquid Crystal Thermometers are typically used to measure core temperature accurately to 0.1°C.
False
Bladder temperature correlates well with core temperature when urine flow is high.
True
Infrared thermometers collect radiation emitted by a cold object and are commonly used on the forehead.
False
Zero-Heat Flux Thermometers measure tissue temperature around 5 cm below the skin surface.
False
The Ingestible Telemetric Sensor uses radio waves to transmit signals to an external receiver.
True
Which thermometer type is known for producing a small temperature-dependent voltage most easily measured with an amplifier?
Liquid Crystal Thermometer
What is the main application area of an Infrared thermometer?
Forehead
What do Zero-Heat Flux Thermometers use to prevent heat flow through the insulator probe when measuring tissue temperature?
Heater
What is the main advantage of using Bladder temperature as a measure of core temperature?
Good correlation with core temperature
Which thermometer type is found to correlate well with pulmonary artery temperature when measuring tissue temperature approximately 1–2 cm below the skin surface?
Zero-Heat Flux Thermometer
What is the main disadvantage of using an Ingestible Telemetric Sensor?
Poor correlation with core temperature
What is the main advantage of Zero-Heat Flux Thermometers?
Prevents heat flow through the insulator
Where are Liquid Crystal Thermometers commonly applied for temperature measurement?
Skin
What method does an Ingestible Telemetric Sensor utilize to transmit signals to an external receiver?
Radio waves
What distinguishes an Infrared thermometer when collecting radiation?
Warm objects
Which thermometer type is known to produce a small temperature-dependent voltage that is most easily measured with an amplifier?
Ingestible Telemetric Sensor
What is the main advantage of Liquid Crystal Thermometers?
Stable and accurate to 0.1°C
What is the main disadvantage of using Bladder temperature to measure core temperature?
Extremely dependent on urine flow
Where are Zero-Heat Flux Thermometers typically used?
PACU, not OR
What is the main benefit of using an Ingestible Telemetric Sensor?
Provides a good correlation with core temperature
This quiz outlines the operating principles, equipment, advantages, and disadvantages of NIBP monitors, SPO2 monitors, and temperature control devices. Topics covered include monitoring technologies, monitoring sites, hazards, warming devices, and more by Kathleen Minott, DNAP, CRNA.
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