ICD

Question 1

What is shock therapy?

Answer 1

Used to terminate fibrillation at a high output

Question 2

What percentage of patients are non-responders?

Answer 2

30%

Question 3

What is the most commonly recommended programming of first shock strength?

Answer 3

DFT + 10J

Question 4

True or False

Fixed-gain sensing is not appropriate for ICDs.

Answer 4

True

Question 5

What is the classification system for heart failure?

Answer 5

NYHA

Question 6

What are the indications for NYHA class I?

Answer 6

There is evidence and general agreement that a given procedure or treatment is useful and effective

Question 7

What are 3 functions of an ICD?

Answer 7

Pace
Sense
Shock

Question 8

What is it called when after each delivered therapy, the ICD must determine whether the tachycardia was terminated?

Answer 8

re-confirm

Question 9

What is another word for extended bipolar sensing?

Answer 9

integrated sensing

Question 10

What is extended bipolar sensing?

Answer 10

tip to the RV shocking coil

Question 11

What were the criteria for the MADIT II study?

Answer 11

previous MI wit an EF < 30%

Question 12

Which drug is associated with increases in DFTs

Answer 12

Amiodarone

Question 13

What is ATP?

Answer 13

Pacing technique that involves burst pacing to eliminate a tachycardia

Question 14

Where is the CS located?

Answer 14

posterior septum of the RA

Question 15

CRT is most beneficial to those with a QRS of _____ms or longer

Answer 15

> 120ms

Question 16

Describe the difference between burst and ramp pacing in ATP

Answer 16

Burst - fixed

ramping - increase in rate

Question 17

What do most ICD batteries consists of?

Answer 17

Lithium Anodes and Silver Vanadium

Question 18

What is the nominal amount of intervals ?

Answer 18

12 intervals

Question 19

When did the FDA approve the ICD?

Answer 19

1985

Question 20

Who is the inventor of the ICD?

Answer 20

Michel Mirowski

Question 21

What is true bipolar sensing?

Answer 21

recording the electrode tip to the proximal ring

Question 22

What are canted leads?

Answer 22

hugs the vessel wall using torque and pressure

Question 23

What is zone 1?

Answer 23

VF only

Question 24

Current ICDs use high efficiency cardioversion and defibrillation. What is the most efficient shock waveform?

Answer 24

Biphasic

Question 25

Which type of pacing produces a "no man's land' type of axis

Answer 25

Bi V

Question 26

What is Zone 3?

Answer 26

VF, VT-1, VT-2

Question 27

What is a non-responder?

Answer 27

don't respond to therapy

Question 28

Name 3 "first line" druge therapy for HF

Answer 28

loop ace inhibitors B blockers

Question 29

ERI

Answer 29

Elective Replacement Indicator

Question 30

Give the definition for DFT.

Answer 30

Defibrillation Threshold: Shock strength to give defibrillation

Question 31

BOL

Answer 31

beginning of life

Question 32

What is pacemaker syndrome caused by?

Answer 32

Non physiologic VVI pacing

Question 33

What is regarded as the gold standard drug for HF?

Answer 33

ACE inhibitor

Question 34

Where is critical LV lead placement required

Answer 34

lateral anterolateral posterolateral

Question 35

What is zone 2?

Answer 35

VF and VT

Question 36

What were the two pacing modes in the DAVID trial?

Answer 36

VVI + DDDR

Question 37

What does ICD stand for?

Answer 37

implantable cardioverter defibrillator

Question 38

What happens when the ICD is in the off zone?

Answer 38

no zones, but bradycardia pacing still works

Question 39

EOL

Answer 39

End of Life

Question 40

What is the effect of placing a magnet over on all models ICDs?

Answer 40

back up pacing

Question 41

What is the most important intervention to revive patients in cardiac arrest?

Answer 41

Prompt Defibrillation

Question 42

What does the ICD base its detection on?

Answer 42

rate

Question 43

What are the 4 zones of detection of an ICD?

Answer 43

Zone 1, 2, 3 and off

Question 44

How long is a typical ICD charge?

Answer 44

5-12 seconds

Question 45

What are three mechanisms that cause rhythm disorders?

Answer 45

Enhanced automaticity Triggered automaticity Reentry