Deck 2: Miscellaneous Questions on Medical Electrodes and Systems

Question 1

Needle electrode is used to measure                          

A)EKG
B)EEG
C)EOG
D)EMG

Answer 1

EMG

Question 2

From equipment point of view, the respiratory system in the human body is a                     system.

A)hydraulic
B)pneumatic
C)mechanical
D)electrical

Answer 2

pneumatic

Question 3

Off-set potential is                            

A)difference in half-cell potentials between two electrodes
B)sum of half-cell potentials between two electrodes
C)average of half-cell potentials between two electrodes
D)complement of half-cell potentials between two electrodes

Answer 3

difference in half-cell potentials between two electrodes

Question 4

Which of the following is not preferred for electrode making?

A)Ag-AgCl
B)Copper
C)Stainless-steel
D)Gold

Question 5

Which of the following statement is false about polarizable electrodes?

A)they are made using stainless steel
B)used for recording resting ECG
C)retain a residual charge when exposed to large pulse of energy
D)can transmit small bioelectric signals even after getting exposed to large pulse of energy

Question 6

Which electrodes can work even after being induced to large electric discharge such as defibrillation?

A)polarizing electrodes
B)magnetic electrodes
C)non-polarizing electrodes
D)electrolytic electrodes

Question 7

The frequency range of ECG is                          

A)0.05-150 HZ
B)500-1500 Hz
C)5-500 kHz
D)0.5-150 MHz

Question 8

Which of the following amplifier circulatory is employed to reduce the hum noise generated by the power supply in the ECG circuit?

A)band pass filters
B)high pass filters
C)notch filters
D)low pass filters

Question 9

The branch of medicine that deals with the provision and use of artificial devices such as splints and braces is                    

A)prosthetics
B)orthotics
C)laproscopic
D)augmentative communication

Question 10

The sensitivity of an electrocardiograph is typically set at 10 mm/mV.

Question 11

The volume of blood within the dialyzer is known as                        

A)secondary volume
B)quarterly volume
C)priming volume
D)residual volume

Question 12

The ideal membrane should possess to water.

A)low permeability to water
B)high permeability to water
C)medium permeability to water
D)high permeability to waste

Question 13

To achieve optimum performance and to enable the relationship of change in resistance with the volume of the cell to hold good, it is recommended that the ratio of the aperture length to the diameter of the aperture should be                      

A)75:1
B)0.75:100
C)0.75:1
D)0.5:10

Question 14

The blood is a poor conductor of electricity.

Question 15

In floating electrodes metal electrode does not make direct contact with the skin.

Question 16

The number of leads necessary for an ECG is                    

A)3
B)6
C)12
D)24

Question 17

Which of the four limbs acts like a ground and thus is not a part of the ECG test?

A)Right Arm
B)Left Arm
C)Right Leg
D)Left Leg

Question 18

What result do the various combinations of limb leads give?

A)Einthoven's Triangle
B)Beethoven's Triangle
C)Bermuda's Triangle
D)Electrical Triangle

Question 19

The most common placement of the leads from the Einthoven's triangle is                      

A)Positive Left Arm and Negative Right Arm
B)Positive Left Leg and Negative Right Arm
C)Positive Left Leg and Negative Left Arm
D)Positive Right Arm and Negative Left Leg

Question 20

A typical ECG wave is                

A)Periodic
B)A-periodic
C)Quasi - Periodic
D)Non - Periodic

Question 21

The amplitudes of the segments of the wave are                          

A)P = 0.25 mV, Q = 0.4mV, R = 1.60mV, T = 0.1 - 0.5 mV
B)P = 2.0 mV, Q = 0.1mV, R = 1.60mV, T = 0.1 - 0.5 mV
C)P = 25.0mV, Q = 4.0mV, R = 16.0 mV, T = 10 - 50 mV
D)P = 0.25 mV, Q = 0.60mV, R = 1.60mV, T = 0.1 - 1.0 mV

Question 22

Bradycardia ECG will show what kind of wave?

A)The impulses have increased
B)The impulses have decreased
C)Pronounced P waves
D)Pronounced T waves

Question 23

Which of these conditions are natural conditions for tachycardia?

A)Running
B)Grief
C)Shock
D)Sleep

Question 24

Electrodes to measure EEG are placed on                  

A)forehead
B)scalp
C)cheek
D)ears

Question 25

According to the international 10/20 system to measure EEG, even number denotes which side of the brain?

A)left
B)top
C)bottom
D)right