Section 2: Diagnostic Equipment Flashcards
Name 4 methods of recording respiratory effort
Inductive Plethysmograph Piezo-electric Crystal Belts Mercury Strain Gauges Cardio-Pneumograph Pneumatic Respiration Transducer Intercostal EMG's Esophageal Balloon Water-filled Cather
Name 4 methods of recording respiratory effort
Inductive Plethysmograph Piezo-electric Crystal Belts Mercury Strain Gauges Cardio-Pneumograph Pneumatic Respiration Transducer Intercostal EMG's Esophageal Balloon Water-filled Cather
What is the difference between an AC signal and a DC signal?
AC signals can alternate quickly between positive and negative voltages, while DC signals change slowly and range from 0 - 1V
What is the difference between a thermistor and a thermocouple?
Thermocouples detect the rate of temperature change by using two dissimilar metals that are sensitive to temperature change. Thermistors use a wheatstone bridge circuit to amplify the difference in temperature between expired air and room air.
How does an oximeter estimate the blood oxygen level?
One end shines a red light through the finger while the other end detects that light. Blood that is highly saturated by oxygen is lighter in color, and allows more light to pass through it.
What is the optimal range for impedances in EEG channels?
A 10uV signal is detected by the exploring electrode (G1) at the same time as a 5uV signal is detected by the reference electrode (G2). What is the output voltage?
5uV
A 10uV signal is detected by the exploring electrode (G1) at the same time as a 5uV signal is detected by the reference electrode (G2). What is the output voltage?
5uV
What is the difference between an AC signal and a DC signal?
AC signals can alternate quickly between positive and negative voltages, while DC signals change slowly and range from 0 - 1V
What is the difference between a thermistor and a thermocouple?
Thermocouples detect the rate of temperature change by using two dissimilar metals that are sensitive to temperature change. Thermistors use a wheatstone bridge circuit to amplify the difference in temperature between expired air and room air.
How does an oximeter estimate the blood oxygen level?
One end shines a red light through the finger while the other end detects that light. Blood that is highly saturated by oxygen is lighter in color, and allows more light to pass through it.
What is the optimal range for impedances in EEG channels?
What does a Frequency Response Curve show?
The amplifier’s ability to eliminate unwanted signals through the use of filters
A 10uV signal is detected by the exploring electrode (G1) at the same time as a 5uV signal is detected by the reference electrode (G2). What is the output voltage?
5uV
What is the difference between a snore microphone and a snore sensor?
Snore microphones detect the noise from the snores and can be placed wherever snoring is heard the loudest, close to the nose or mouth or on the throat. Snore sensors record vibrations from the snores and are placed on the throat.
