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cvpr exam i copy > 24. Arrhythmias > Flashcards

24. Arrhythmias Flashcards

1
Q

What is the tx for V-fib?

A

defibrillate, epi, repeat

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2
Q

How is V-tach treated?

A

lidocaine, amiodarone, cardioversion

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3
Q

How is 3rd degree AV block treated?

A

a pacing wire or permanent pacemaker if rate and BP are low

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4
Q

What does V-tach look like on the ECG?

A

regular, wide complexes 100-200 BPM and no P waves

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5
Q

What does PVC stand for?

A

premature ventricular contraction

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6
Q

What is A-tach?

A

rapid heart rate 150+, abnormal or biphasic P waves, narrow QRS complexes

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7
Q

What is Mobitz 2?

A

a 2nd degree AV block- just below the AV node

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8
Q

What is 3rd degree AV block?

A

complete heart block- P waves are faster than the QRS rate and there is really no connection between the two

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9
Q

What is atrial flutter?

A

P waves at a rate of 240-320/minute- SAWTOOTH pattern- has a QRS conduction that is irregular

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10
Q

A prolonged PR interval is longer than ____.

A

0.2 sec or 1 box wide

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11
Q

What does an APB look like?

A

a premature beat preceded by an abnormal P wave but has a normal QRS

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12
Q

What is junctional rhythm?

A

regular with narrow QRSs and no P waves

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13
Q

Where is conduction occurring in 3rd degree AV block?

A

at the SA node AND somewhere below the AV node/bundle of His separately

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14
Q

How does Mobitz 1 (Wenckebach) look on the ECG?

A

progressive lengthening of the PR interval followed by a nonconducting P wave

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15
Q

What causes Mobitz 1 (Wenckebach)?

A

an increase of vagal tone

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16
Q

There will be a _____ in first degree AV block on the ECG.

A

prolonged PR interval always followed by a QRS

17
Q

What causes 1st degree AV blocks?

A

drugs (beta-blockers, verapamil, Ca++ blockers, digitalis, and conduction system disease (elderly folk)

18
Q

What does a ventricular premature contraction (PVC) look like on the ECG?

A

it’s a very wide, abnormal looking QRS that didn’t follow a P wave, then normal rhythm resumes

19
Q

There will be a prolonged PR interval always followed by a QRS in _____ on the ECG.

A

first degree AV block

20
Q

Why is A-flutter treated?

A

bc these pts are at increased risk of emboli and stroke

21
Q

What does APB stand for?

A

atrial premature beat

22
Q

What does V-fib look like on the ECG?

A

no consistent QRSs or conduction- all over the place

23
Q

What are the ECG findings in A-fib?

A

no P waves, undulating baseline, irregular QRS waves, IRREGULARLY IRREGULAR

24
Q

What causes 3rd degree heart block?

A

anterior MIs, sometimes inferior, conduction system diseases (sarcoidosis)

25
Q

What is 2nd degree AV block?

A

some P waves conduct QRS’s but others do not- missed connection

26
Q

How is A-tach treated?

A

adenosine vagal maneuvers beta blockers verapamil or dilitiazem

cvpr exam i copy (29 decks)

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