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CV II Exam 1 > Rapid EKG II > Flashcards

Rapid EKG II Flashcards

1
Q

sinus rhythm

A

created at SA node

-60-100 bpm

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2
Q

bradycardia

A

<60

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3
Q

tachycardia

A

> 100

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4
Q

ectopic foci

A

auto foci other than SA node

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5
Q

atrial foci rate

A

60-80

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6
Q

junctional foci rate

A

40-60

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7
Q

vetnricular foci rate

A

20-40

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8
Q

overdrive suppression

A

fastest foci is in control

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9
Q

AV junction foci

A

proximal end - no foci
-rate 40-60

can cause idiojunctional rhythm

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10
Q

rate numbers to know

A

300-150-100-75-60-50

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11
Q

6 second strip

A

with two three second intervals

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12
Q

sinus arrhythmia

A

normal physio mechanism

  • slight increase with inspiration
  • sympathetic
  • slight decrease with expiration
  • parasympathetic
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13
Q

bachmanns bundle

A

SA node to left trium

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14
Q

atrial conduction system

A

middle, posterior, and anterior internodal tracts

also - bachmanns bundle

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15
Q

AV node near coronary sinus

A

likely spot of automaticity - bc convergence of several conduction pathways

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16
Q

septum depolarization

A

left bundle branch has terminal filaments

right bundle branch - no terminal filaments in septum

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17
Q

U wave

A

final phase of purkinje repolarization

beyond end of T wave

18
Q

irregular rhythm

A

inconstant duration between paced cycles

19
Q

parasystolic**

A

if foci has entrance block

  • cannot be overdrive suppressed
  • can become pacing foci
20
Q

wandering pacemaker

A

P wave shape varies
atrial rate <100
irregular QRS complexes - still narrow

21
Q

P wave shape varied
atrial rate <100
irregularly space narrow QRS

A

wandering pacemaker

22
Q

multifocal atrial tachycardia

A

P wave shape varies
atrial rate >100
irregular narrow QRS

**often with COPD

23
Q

P waves varied
atrial rate >100
irregularly spaced narrow QRS

A

multifocal atrial tachycardia

24
Q

atrial fibrillation

A

no discernable P waves

  • chaotic atrial spikes
  • random narrow QRS complexes

**random depolariations reach the AV node

**important to determine rate average - per six second strip

25
Q

chaotic atrial spikes - no P waves

-random narrow QRS complexes

A

atrial fibrillation

26
Q

escape rhythm

A

auto foci escapes overdrive to pace at its inherent rate

-atrial, junctional, and ventricular

27
Q

escape beat

A

auto foci escapes overdrive to emit one beat

-atrial, junctional, ventricular

28
Q

sinus arrest

A

SA node ceases pacemaking completely

-backup auto foci take over

29
Q

atrial escape rhythm

A

sinus arrest - followed by atrial foci that takes over

  • rate 60-80
  • new P’ waves
30
Q

junctional escape rhythm

A

sinus arrest leads to auto foci in junction to take over

  • rate 40-60
  • P’ inverted with upright QRS
  • retrograde atrial depolarization
31
Q

P’ inverted with upright QRS

A

seen with junctional escape rhythm
-due to retrograde atrial depolarization

may be before, during, or after QRS

32
Q

ventricular escape rhythm

A

ventircular auto foci takes over

  • rate 20-40
  • widened QRS complexes
  • no P waves
33
Q

stokes adams syndrome

A

ventricular pacing - very slow

  • reduced blood to brain
  • patient unconscious
34
Q

downward displacement of the pacemaker

A

total failure of SA node and all foci above ventricles

  • rare
  • ventricular foci takes over
35
Q

atrial escape beat

A

sinus block results in pause allowing atrial foci to take over for one beat
-see a different P’

36
Q

junctional escape beat

A

sinus block results in pause allowing junctional foci to take over
-inverted P’ or no P’

37
Q

ventricular escape beat

A

sinus block results in pause allowing ventricular foci to take over

  • no P wave
  • widened QRS complex
38
Q

cardia parasympathetics

A

inhibit SA node and atrial/junctional nodes

-therefore, burst of PS leaves ventricular foci to respond to pause

39
Q

premature beat

A

irritable focus spontaneously fires single stimulus
-atrial, junctional, or ventricular

-appears earlier than expected

40
Q

ventricular foci

A

O2 sensitive

-low O2 - irritable - react

41
Q

irritation of atrial and junctional foci

A

epi, sympathetics, caffeine, stimulants of beta1, hyperthyroid, stretch

-can fire impulse

CV II Exam 1 (10 decks)

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