EKG Final Review

Question 1

Phase 0

Answer 1

Qrs on ekg

Question 2

Phase 1

Answer 2

Early repolarization; slight decrease on waveform

Question 3

Phase 2

Answer 3

Plateau phase; ST segment

Question 4

Phase 3

Answer 4

Rapid repolarization; t wave

Question 5

Phase 4

Answer 5

Polarization; resting

Question 6

Non pacemaker site generate a faster than normal impulse or a pacemaker site that generates at a faster than normal rate

Answer 6

Enhanced automaticity

Question 7

Cells in non-pacemaker site depolarize more than once after a single stimulus

Answer 7

Triggered activity

Question 8

What creates conditions for reentry

Answer 8

Accessory pathways

Question 9

Bipolar leads

Answer 9

Standard and MCL

Question 10

Unipolar leads

Answer 10

Augmented and precordial

Question 11

Einthoven: right arm always ______, left leg always _______.

Answer 11

Negative, positive

Question 12

Unipolar: computer assumes central point is _____

Answer 12

Negative

Question 13

When are MCL used

Answer 13

Distinguish between L/R BBB and distinguishing between different arrhythmias

Question 14

PR interval activity

Answer 14

SA node thru Perkinje fibers

Question 15

Normal p wave measurements

Answer 15

2.5mm high, 0.12 sec duration

Question 16

PR segment activity

Answer 16

AV node and his-purkinje activation

Question 17

Normal PR interval

Answer 17

.12-.20

Question 18

ST segment correlates to which refractory period

Answer 18

Absolute refractory period

Question 19

Peak of T wave to bottom of T wave corresponds to what refractory period

Answer 19

Relative

Question 20

Sequential intervals

Answer 20

300, 150, 100, 75, 60, 50

Question 21

Period of supernormal period on ekg

Answer 21

Any time after T before QRS

Question 22

No stimulation will result in contraction l; beginning of QRS to peak of T wave

Answer 22

Effective (absolute) refractory period

Question 23

Symptomatic sinus Brady treatment

Answer 23

Atropine .5-1.0 mg

Question 24

Sinus tach range

Answer 24

101-180

Question 25

Frequent PACs may induce episodes of ______

Answer 25

A fib or PSVT

Question 26

Most commonly seen dysrhythmia

Answer 26

A fib

Question 27

A tach range

Answer 27

150-250

Question 28

A-tach treatment

Answer 28

Vagal, adenosine (6-24mg), cardioversion

Question 29

A fib recognition

Answer 29

F/T waves irregular among themselves

Question 30

A flutter

Answer 30

F/T waves regular among themselves; regular rhythm

Question 31

First degree block conduction

Answer 31

Delayed

Question 32

Second degree block conduction

Answer 32

Intermittent

Question 33

Third degree block conduction

Answer 33

None

Question 34

First degree block commonly found in

Answer 34

AV node

Question 35

Second degree type one commonly found in

Answer 35

AV node

Question 36

2nd degree II/3rd degree found

Answer 36

Bundle of his/bundle branches

Question 37

2nd degree type 2 can rapidly progress to what

Answer 37

3rd degree

Question 38

Only electrical connection between atria and ventricles

Answer 38

Bundle of his

Question 39

Asystole medication

Answer 39

Epinephrine

Question 40

Epinephrine dosage

Answer 40

.5-1.0

Question 41

Vasopressin dosage

Answer 41

40 units IV injection

Question 42

Lidocaine dosage

Answer 42

1.0mg/kg IV inj.

Question 43

Amiodarone dosage

Answer 43

150 atrial | 300 ventricular

Question 44

Lidocaine usage

Answer 44

Ventricular arrhythmias

Question 45

Sodium bicarbonate usage

Answer 45

Cardiac arrest, acidosis

Question 46

Sodium bicarbonate dosage

Answer 46

1 mEg IV inj.

Question 47

Adenosine is treatment for

Answer 47

A tach

Question 48

Accelerated junctional rate

Answer 48

61-100

Question 49

Junctional tach rate

Answer 49

101-180

Question 50

R atrial enlargement criteria

Answer 50

Tall peaked P waves in 2, 3 and AVF

Question 51

L atrial enlargement criteria

Answer 51

Broad or notched p wave in leads 1,2, AVL, v4, v5 or v6

Question 52

Suppresses automaticity and spontaneous depolarization of ventricles

Answer 52

Lidocaine

Question 53

Prolongs the duration of action potential by increasing the length of the refractory periods

Answer 53

Amiodarone

Question 54

3 functions of pacemakers

Answer 54

Sense, stimulate, store

Question 55

Pacemaker access site

Answer 55

Subclavian, femoral or brachial veins