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ECG > Pacemakers > Flashcards

Pacemakers Flashcards

1
Q

Pacemakers are usually indicated for _________

A

non-reversible
symptomatic
bradyarrhythmias

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2
Q

most commonly used pacing mode

A

demand (only when HR falls below threshold)

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3
Q

a _____ will follow atrial pacing

A

p wave

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4
Q

a ______ will follow ventricular pacing

A

wide QRS

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5
Q

This resynchronizes biventricular contraction and employs 3 leads…

A

cardiac resynchronization therapy

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6
Q

CRT is common in what two conditions?

A

HF and LBBB

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7
Q

_____ pacemakers produce tall pacing spikes on ECG

A

unipolar

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8
Q

________ pacemakers produce short pacing spikes

A

bipolar

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9
Q

2 features of paced ECG complex

A

narrow pacing spike

p wave or QRS immediately following spike

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10
Q

what type of pacemaker failure?

spikes not followed by P wave or wide QRS…

A

failure to capture

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11
Q

what type of pacemaker failure?

spikes that fall where they should have been inhibited…

A

failure to sense

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12
Q

what type of pacemaker failure?

absence of pacemakers spikes when they should have fired.

A

failure to pace

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13
Q

what type of pacemaker failure?

fast HR with pacemaker spike preceding each QRS

A

pacemaker-mediated tachycardia

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14
Q

ICD is indicated for patients at risk of sudden cardiac death due to…(2)

A

v. fib

v. tach

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15
Q

4 therapies an ICD can do…

A

anti-brady pacing
anti-tachy pacing
cardioversion
defib

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16
Q

EMI that can interrupt pacemakers/ICDs are not common at home/office. Where are sources of EMI commonly found?

A

hospitals

17
Q

EMI due to electrocautery if…

A

w/in 6 inches of heart

18
Q

transthoracic defibrilation causes EMI… should it be withheld?

A

no

19
Q

what source of EMI for abd. devices?

A

extracorporeal shock-wave lithotripsy

20
Q

what can prevent EMI in therapeutic radiation?

A

device shielding

21
Q

Can RF ablation cause EMI?

A

yes

22
Q

TENS units is safe for ______ units, but not for ______s

A

bipolar = safe

unipolar = unsafe

ECG (9 decks)

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