Module 13: EKG

Question 1

How to Prep for EKG?

Answer 1

disrobe, remove jewelry, clean skin, shave

Question 2

Lead 1 Record

Answer 2

impulses between the left/right arms

Question 3

Lead 2 Record

Answer 3

impulses between the right arm and left leg

Question 4

Lead 3 Record

Answer 4

impulses between the left arm and left leg

Question 5

AVL Trace

Answer 5

left leg and right arm assist with left arm tracing

Question 6

AVR Trace

Answer 6

left arm and left leg assist with right arm tracing

Question 7

AVF Trace

Answer 7

right/left arms assist with left leg tracing

Question 8

V1

Answer 8

placed first, on right side of sternum at fourth intercostal space

Question 9

V2

Answer 9

placed after V1, left side of sternum, directly across from V1at fourth intercoastal space

Question 10

V3

Answer 10

placed after V4, on left side of chest, midway between V2/V4

Question 11

V4

Answer 11

placed after V2, on left side of chest, fifth intercoastal space, midclavicula line

Question 12

V5

Answer 12

placed after V3, on left side of chest, fifth intercostal space, anterior axillary line

Question 13

V6

Answer 13

placed after V5, on left side og chest, fifth intercoastal space, midaxillary line

Question 14

P wave

Answer 14

represents atrial depolarization or contraction

Question 15

QRS wave

Answer 15

represets ventricular depolarization or contraction

not visible

Question 16

T wave

Answer 16

represents ventricular repolarization or relaxation

Question 17

U wave

Answer 17

not always visible but represents a repolarization of bundle of His/Purkinje fibers

Question 18

P-R interval

Answer 18

starts at beginning of P wave/ends beginning of Q wave, represents time it takes from beginning of atrial depolarization to beginning of ventricular depolarization

Question 19

QT interval

Answer 19

starts at beginning of Q wave and ends at the end of T wave, it represnets time it takes from beginning of ventricular depolarization to end of ventricular repolarization

Question 20

ST segment

Answer 20

starts at end of S wave and ends at the beginning of T wave, it representstime from end of ventricular depolarization to beginning of ventricular repolarization

Question 21

Somatic Tremor

Answer 21

muscle movement causing irregular spike is an EKG tracing

Question 22

AC Interference

Answer 22

60-cycle interferenc an artifact in ELKG tracing by electical interference

Question 23

Wandering Baseline

Answer 23

inconsistency in baseline location on the EKG tracing likely caused by poor lead contact

Question 24

Interrupted Baseline

Answer 24

break in tracing usually caused by disconnected or broken lead