EKG flashcards

Question 1

• choppy interference throughout tracing
• related to muscle movement (shivering, parkinson’s disease)

Answer 1

somatic tremor

Question 2

• static looking tracing
• related to poor grounding or external electricity interfering with tracing (lights, computers, crossed lead wires)

Answer 2

AC interference

Question 3

• results from poor electrode connection
• caused by lotions, oils, or powders on the skin

Answer 3

wandering baseline

Question 4

normal EKG tracing of a heart rate less than 60 bpm

Answer 4

sinus bradycardia

Question 5

reflects a heart rate of greater than 100 bpm

Answer 5

sinus tachycardia

Question 6

• a break in the normal EKG tracing
• the sinoatrial node failed to fire
• not significant unless arrest lasts longer than 6 seconds

Answer 6

sinus arrest

Question 7

the atria are contracting at a rate much faster than the ventricles are contracting

Answer 7

atrial flutter

Question 8

• there is no organized contraction of the atria
• in a quivering state
• blood clot formation can occur due to stagnation of blood in the ventricles

Answer 8

atrial fibrillation

Question 9

• ventricles are in a quivering state
• no discernable waves noted throughout the tracing

Answer 9

ventricular fibrillation

Question 10

the heart stops

Answer 10

asystole

Question 11

• a junctional dysrhythmia is likely present
• typical impulse pathway from the SA node to the atrioventricular node is not occuring

Answer 11

P wave negative deflection

Question 12

• QRS wave appears wide and bizarre
• ventricular arrhythmia is occuring
• can be insignificant, but provider should be notified

Answer 12

premature ventricular contraction

Question 13

P wave

Answer 13

atrial depolarization or contraction

Question 14

QRS wave

Answer 14

ventricular depolarization (atrial repolarization is not visible but occurs during this phase

Question 15

T wave

Answer 15

ventricular repolarization

Question 16

U wave

Answer 16

repolarization of the bundle of His and purkinje fibers (not always visible)

Question 17

P-R interval

Answer 17

time it takes from beginning of atrial depolarization to beginning of ventricular depolarization

Question 18

QT interval

Answer 18

time it takes from beginning of ventricular depolarization to end of ventricular repolarization

Question 19

ST segment

Answer 19

time from end of ventricular depolarization to beginning of ventricular repolarization

Question 20

right arm lead color?

Answer 20

white

Question 21

left arm lead color?

Answer 21

black

Question 22

right leg lead color?

Answer 22

green

Question 23

left leg lead color?

Answer 23

red

Question 24

V1

Answer 24

red; right side of the sternum, 4th intercostal space

Question 25

V2

Answer 25

yellow; left side of the sternum, 4th intercostal space

Question 26

V3

Answer 26

green; left side of the sternum, midway between V2 and V4

Question 27

V4

Answer 27

blue; left side of the sternum, 5th intercostal space in the midclavicular line

Question 28

V5

Answer 28

orange; left side of the sternum, 5th intercostal space in the anterior axillary line

Question 29

V6

Answer 29

purple; left side of the sternum, 5th intercostal space in the midaxillary line

Question 30

Lead I

Answer 30

bipolar; records impulses between the left and right arms

Question 31

Lead II

Answer 31

bipolar; records impulses between the right arm and the left leg

Question 32

Lead III

Answer 32

bipolar; records impulses between the left arm and the left leg

Question 33

AVL

Answer 33

unipolar; the left leg and right arm assist with the left arm tracing

Question 34

AVR

Answer 34

unipolar; the left arm and left leg assist with the right arm tracing

Question 35

AVF

Answer 35

unipolar; the right and left arms assist with the left leg tracing