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229 Continuous Doppler ultrasonic instruments are used to
image body structures
locate brain midlines
detect moving interfaces
provide deep tissue heating
all of the above
230 The primary function of soda lime crystals in an anesthesia machine is to
remove microorganisms from the patient airway circuit
absorb the carbon dioxide
purify the nitrous oxide
remove water vapor
231 The typical frequency range of arterial blood pressure waveforms is about
0.05 to 100 hertz
DC to 50 hertz
1 to 20 hertz
25 to 1000 hertz
232 The output frequency of a therapeutic ultrasound unit is approximately
1000 hertz
10 kilohertz
100 kilohertz
1 megahertz
10 megahertz
233 If proper technique is used, the patient impedance seen by defibrillator paddles during defibrillator discharge should be about
50 ohms
500 ohms
5000 ohms
50,000 ohms
234 A typical output pulse from an internal cardiac pacemaker is about
0.5 milliamperes for 1 millisecond
1 milliampere for 820 milliseconds
10 milliamperes for 1 millisecond
1 milliampere for 1 millisecond
235 The gamma camera and scintillation counter are used primarily to study body organ
Function
Location
Density
Motion
236 The velocity of ultrasonic waves through typical soft tissues is about
100 meters/second
500 meters/second
1100 meters/second
1500 meters/second
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