ECG Written Exam

Question 1

Order of conduction through a normal heart

Answer 1

1. SA node
2. AV node
3. Bundle of His
4. Bundle branches
5. Purkinje system

Question 2

Hyperkalemia causes..

Answer 2

Tall, peaked T wave

Question 3

Hypokalemia causes..

Answer 3

Development of U wave

Question 4

Procainamide causes..

Answer 4

Prolonged QT interval

Question 5

Myocardial ischemia/injury causes..

Answer 5

ST segment depression

Question 6

PR interval

Answer 6

0.12-0.20 seconds

Question 7

QRS complex

Answer 7

less than 0.12 seconds

Question 8

QT interval

Answer 8

less than 0.44 seconds

Question 9

Which wave form is atrial depolarization?

Answer 9

P wave

Question 10

Which wave form is ventricular repolarization?

Answer 10

T wave

Question 11

Which wave form is ventricular depolarization?

Answer 11

QRS complex

Question 12

How do you treat symptomatic bradycardia?

Answer 12

Atropine

Question 13

How do you treat ventricular tachycardia?

Answer 13

Lidocaine

Question 14

How do you treat ventricular fibrillation?

Answer 14

Defibrillation

Question 15

How do you treat third degree AV block?

Answer 15

Pacemaker

Question 16

How do you treat asystole?

Answer 16

CPR

Question 17

Rate of the SA node

Answer 17

60-100 bpm

Question 18

Rate of AV node/junction

Answer 18

40-60 bpm

Question 19

Rate of purkinje system

Answer 19

20-40 bpm

Question 20

Tachycardia rate

Answer 20

> 100 bpm

Question 21

Bradycardia rate

Answer 21

less than 60 bpm

Question 22

What is occurring during a first degree block?

Answer 22

No P waves are blocked but the AV conduction time is prolonged

Question 23

What is occurring during a second degree, type 1 block?

Answer 23

PR interval progressively lengthens on consecutively conducted beats

Question 24

What is occurring during a second degree, type 2 block?

Answer 24

Some P waves are conducted and for those beats the PR interval in constant

Question 25

What is occurring during a third degree block?

Answer 25

- All P waves are blocked | - There is no relationship between the P waves and the QRS complex

Question 26

T or F, diuretics frequently cause hypokalemia?

Answer 26

True

Question 27

T or F, idioventricular rhythms should be treated with Lidocaine?

Answer 27

False

Question 28

T or F, AEDs are used to pace rapid atrial tachycardias?

Answer 28

False

Question 29

T or F, a patient with a potassium of 6.6 should be monitored for the development of a U wave?

Answer 29

False

Question 30

T or F, a nurse should always assess a patient's vital signs when there is a change in his or her ECG rhythm?

Answer 30

True

Question 31

T or F, a junctional rhythm always has a P wave in front of the QRS complex, but the PR interval is short?

Answer 31

False

Question 32

T or F, ventricular tachycardia is always symptomatic and requires immediate defibrillation?

Answer 32

False

Question 33

T or F, the AV junction can fire all by itself at a rate of 40-60 times/minute?

Answer 33

True

Question 34

T or F, idioventricular rhythm occurring at a rate of 20-40 beats/minute should be treated with lidocaine?

Answer 34

False

Question 35

T or F, ventricular fibrillation is a benign rhythm and does not usually need treatment?

Answer 35

False

Question 36

T or F, PVCs should always be treated with lidocaine?

Answer 36

False

Question 37

T or F, defibrillation is the required treatment for ventricular fibrillation or pulseless v. tach.?

Answer 37

True

Question 38

T or F, the most important determinant of patient tolerance of any arrhythmia is the ventricular rate?

Answer 38

True

Question 39

What is the treatment for sinus bradycardia?

Answer 39

If symptomatic, 0.5-1 mg of atropine

Question 40

What is the treatment for sinus tachycardia?

Answer 40

- Determine underlying cause | - Beta blockers (Inderal)

Question 41

What is the treatment for sinus arrhythmia?

Answer 41

No treatment

Question 42

What is the treatment for premature atrial contraction?

Answer 42

- Withdraw source | - Digoxin, quinidine, procainamide, beta blockers

Question 43

What is the treatment for atrial flutter?

Answer 43

- Cardioversion | - Verapamil, diltiazem, digoxin, quinidien, procainamide, beta blockers

Question 44

What is the treatment for atrial fibrillation?

Answer 44

- In emergency, cardioversion | - Digoxin, verapamil, diltiazem, quinidine, beta blockers, anticoagulants

Question 45

What is the treatment for atrial tachycardia?

Answer 45

- Vagal stimulation - Adenosine to diagnosis, not treat - Verapamil, diltiazem, digitalis, propranolol

Question 46

What is the treatment for premature junctional contraction?

Answer 46

Procainamide, quinidine

Question 47

What is the treatment for junctional rhythm?

Answer 47

- If symptomatic, give atropine | - Do NOT give lidocaine

Question 48

What is the treatment for accelerated junctional rhythm?

Answer 48

If caused by digoxin, hold digoxin

Question 49

What is the treatment for premature ventricular contraction?

Answer 49

- Amiodarone - Lidocaine (initial bolus 0.5-1.5 mg/kg; continuous 2-4 mg/min) - Procainamide

Question 50

What is the treatment for ventricular tachycardia?

Answer 50

No pulse = debrillation Pulse = amiodarone, lidocaine, pronestyl, Mag sulfate if torsades de point

Question 51

What is the treatment for ventricular fibrillation?

Answer 51

- Defibrillate immediately - CPR - ACLS

Question 52

What is the treatment for idioventricular rhythm?

Answer 52

Atropine, Isuprel Pacemaker Do NOT give lidocaine

Question 53

What is the treatment for asystole?

Answer 53

CPR Early intubation IV epinephrine and atropine

Question 54

What is the treatment for first degree heart block?

Answer 54

No treatment

Question 55

What is the treatment for second degree, type 1 block?

Answer 55

If symptomatic, atropine or pacemaker

Question 56

What is the treatment for second degree, type 2 block?

Answer 56

Atropine, epinephrine, dopamine | Pacemaker

Question 57

What is the treatment for third degree block?

Answer 57

Pacemaker | Atropine, epinephrine, dopamine