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Pacemaker and ICD > ICD > Flashcards

ICD Flashcards

1
Q

What is shock therapy?

A

Used to terminate fibrillation at a high output

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2
Q

What percentage of patients are non-responders?

A

30%

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3
Q

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

A

DFT + 10J

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4
Q

True or False

Fixed-gain sensing is not appropriate for ICDs.

A

True

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5
Q

What is the classification system for heart failure?

A

NYHA

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6
Q

What are the indications for NYHA class I?

A

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

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7
Q

What are 3 functions of an ICD?

A

Pace
Sense
Shock

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8
Q

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

A

re-confirm

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9
Q

What is another word for extended bipolar sensing?

A

integrated sensing

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10
Q

What is extended bipolar sensing?

A

tip to the RV shocking coil

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11
Q

What were the criteria for the MADIT II study?

A

previous MI wit an EF < 30%

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12
Q

Which drug is associated with increases in DFTs

A

Amiodarone

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13
Q

What is ATP?

A

Pacing technique that involves burst pacing to eliminate a tachycardia

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14
Q

Where is the CS located?

A

posterior septum of the RA

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15
Q

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

A

> 120ms

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16
Q

Describe the difference between burst and ramp pacing in ATP

A

Burst - fixed

ramping - increase in rate

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17
Q

What do most ICD batteries consists of?

A

Lithium Anodes and Silver Vanadium

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18
Q

What is the nominal amount of intervals ?

A

12 intervals

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19
Q

When did the FDA approve the ICD?

A

1985

20
Q

Who is the inventor of the ICD?

A

Michel Mirowski

21
Q

What is true bipolar sensing?

A

recording the electrode tip to the proximal ring

22
Q

What are canted leads?

A

hugs the vessel wall using torque and pressure

23
Q

What is zone 1?

A

VF only

24
Q

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

A

Biphasic

25
Q

Which type of pacing produces a “no man’s land’ type of axis

A

Bi V

26
Q

What is Zone 3?

A

VF, VT-1, VT-2

27
Q

What is a non-responder?

A

don’t respond to therapy

28
Q

Name 3 “first line” druge therapy for HF

A

loop
ace inhibitors
B blockers

29
Q

ERI

A

Elective Replacement Indicator

30
Q

Give the definition for DFT.

A

Defibrillation Threshold: Shock strength to give defibrillation

31
Q

BOL

A

beginning of life

32
Q

What is pacemaker syndrome caused by?

A

Non physiologic VVI pacing

33
Q

What is regarded as the gold standard drug for HF?

A

ACE inhibitor

34
Q

Where is critical LV lead placement required

A

lateral
anterolateral
posterolateral

35
Q

What is zone 2?

A

VF and VT

36
Q

What were the two pacing modes in the DAVID trial?

A

VVI + DDDR

37
Q

What does ICD stand for?

A

implantable cardioverter defibrillator

38
Q

What happens when the ICD is in the off zone?

A

no zones, but bradycardia pacing still works

39
Q

EOL

A

End of Life

40
Q

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

A

back up pacing

41
Q

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

A

Prompt Defibrillation

42
Q

What does the ICD base its detection on?

A

rate

43
Q

What are the 4 zones of detection of an ICD?

A

Zone 1, 2, 3 and off

44
Q

How long is a typical ICD charge?

A

5-12 seconds

45
Q

What are three mechanisms that cause rhythm disorders?

A

Enhanced automaticity
Triggered automaticity
Reentry

Pacemaker and ICD (3 decks)

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