EKG

Question 1

The technician should set the paper speed on the EKG machine to 50 mm/second for a patient who has a fast heart rate.

Answer 1

The technician should recognize that leads V1 and V2 record electrical

Question 2

Leads I and V6 record electrical activity of the lateral wall of the left ventricle. These leads do not record electrical activity of the septal wall.

Answer 2

Leads I and V6

Question 3

Leads aVL and V5 record electrical activity of the lateral wall of the left ventricle. These leads do not record electrical activity of the septal wall.

Answer 3

Leads aVL and V5

Question 4

Leads III and aVF record electrical activity of the inferior wall of the left ventricle. These leads do not record electrical activity of the septal wall.

Answer 4

Leads III and aVF

Question 5

supine with the arms at the side

Answer 5

This is the appropriate position for a standard 12-lead EKG, not a nuclear stress test.

Question 6

Supine with the arms above the head

Answer 6

During a nuclear stress test, the patient should be in a supine position with the arms above the head so the camera can rotate around the patient to produce a multidimensional image.

Question 7

Right-side lying with the arms slightly extended

Answer 7

This is not the appropriate position for a nuclear stress test.

Question 8

Sitting upright with the head tilted back

Answer 8

This is not the appropriate position for a nuclear stress test.

Question 9

speed

Answer 9

The speed control is used to control the speed at which the paper runs during recording. It does not control or regulate the output or height of the EKG waveforms.

Question 10

output display

Answer 10

The output display is the screen that shows the EKG tracing. It does not control or regulate the output or height of the EKG waveforms.

Question 11

Artifact filter

Answer 11

The artifact filter decreases artifacts or abnormal marks on the EKG tracing. It does not control or regulate the output or height of the EKG waveforms.

Question 12

Gain

Answer 12

The technician should use the gain control to adjust the height of the waveform.

Question 13

50mm/second

Answer 13

The technician should set the paper speed on the EKG machine to 50 mm/second for a patient who has a fast heart rate.

Question 14

25 mm/second

Answer 14

A patient who is experiencing accelerated junctional rhythm has a heart rate of 60 to 100/min. The technician should use the standard paper speed setting of 25 mm/second.

Question 15

10mm/second

Answer 15

The technician should set the paper speed on the EKG machine to 10 mm/second if the patient has a slow heart rate.

Question 16

5mm/second

Answer 16

The technician should set the paper speed on the EKG machine to 5 mm/second if the patient has a slow heart rate.

Question 17

The technician should first check the patient’s respiratory rate. Checking the patient’s respiratory rate will allow the technician to confirm hyperventilation.

Answer 17

The technician should first check the patient’s respiratory rate. Checking the patient’s respiratory rate will allow the technician to confirm hyperventilation.

Question 18

in a healthy adult patient, which of the following is expected shape and direction of the p wave in lead 11

Answer 18

(rounded and upright)
Normal atrial depolarization moves in the direction of the left leg, or the positive electrode, causing an upright and rounded wave. This is an expected finding in a healthy adult patient.

Question 19

Rounded and inverted

Answer 19

p wave inversion indicates depolarization of the atria opposite of the expected direction and is not an expected finding in a healthy adult patient.

Question 20

peaked and inverted

Answer 20

P wave inversion indicates depolarization of the atria opposite of the expected direction and is not an expected finding in a healthy adult patient.

Question 21

peaked and upright

Answer 21

Peaked P waves indicate atrial enlargement and are not an expected finding in a healthy adult patient.