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65 Cards in this Set
- Front
- Back
What is the correct order of conduction pathway?
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SA-->Atria-->AV-->Bundle of his-->Bundle branches-->purkinje network
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What is the normal PRI?
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0.12- 0.20 sec
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What is the normal QRS duration?
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< 0.12 sec
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What does a P-wave represent?
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Atrial depolarization
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One small box on a strip represents?
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0.04 sec
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HR 60-100
Normal PRI Normal QRS 1:1 conduction regular |
Normal Sinus Rhythm
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Entire beat missed
Does not resume on time |
Sinus arrest/ sinus pause
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Saw tooth p waves
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Atrial Flutter
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Grossly irregular ventricular rate and no discernable p waves
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Atrial FIbrillation
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Three pacemakers and their inherent rates
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1. SA Node- 60-100
2. AV Node- 40-60 3. Ventricules- 20-40 |
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Usually seen with PVCs as a result of 2 R-R cycles
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Compensatory Pause
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Usually seen with PACs and PJCs; not the result of 2 R-R cycles
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Non-compensatory Pause
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A T-wave represents?
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Ventricular repolarization
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Normal QT interval
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< 0.42 sec
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Ectopic focus
Non-compensatory pause P wave present Narrow QRS |
PAC
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Associated with breathing patterns and generally benign
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sinus arrhythmia
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In CHB (third degree) the ventricular rate is usually _______ than atrial rate
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slower
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If the SA and AV nodes fail, this will assume pacing responsibilities?
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Ventricles
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An EKG rhythm strip has 7 QRS complexes in a six second time period, what is the HR?
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70 bpm
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The PRI measures 4 "baby squares"; this equals
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0.16 sec
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Name the two functions of the heart
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Electrical and mechanical
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"Above the ventricles"
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Supraventricular
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Electrical return to resting state
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Repolarization
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Electrical discharge of energy
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Depolarization
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Natural pacemaker of the hear
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SA node
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This will help you to identify a junctional rhythm
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P wave
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Monitor term associated with atrial contraction
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p wave
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Normal rate of atrial tachycardia
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150-250 bpm
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Normal rate of SVT
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170-220 bpm
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When the pacemaker site changes (SA, AV, Atria) throughout strip showing a variance in p wave morphology
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Wandering Atrial Pacemaker
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In junctional rhythms, the P wave may appear:
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- small and inverted
- absent - behind the QRS (retrograde) - PRI <0.12 |
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If there is an inverted p wave, but the PRI is WNL, what is your rhythm?
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Sinus rhythm
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PVCs can arise from a variety of focuses as evidenced by different looking PVCs in a strip; this is called
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Multifocal PVC
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Another name for wenkebach
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Second degree Type 1 or Mobitz I
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If you have a PAC every other beat, it is called
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Atrial bigeminy
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No electrical activity as evidenced by straight line
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Asystole
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Rate 150-250
Sudden start and stop Narrow QRS |
PAT
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Early beat
wide and bizaare No pwaves |
PVC
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Missing entire complex
Resumes on time |
Sinus Exit block
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More P waves than QRS
PRI progressively gets longer followed by dropped QRS |
Wenkebach/ Type 1/ Mobitz I
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Unmeasurable
Quivering ventricles |
VFib
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More p's than QRS
Consistant PRI |
Mobitz II/ Type 2
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More p's than QRS
Inconsistant PRI |
CHB/Third Degree!
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Evidenced by PRI > 0.20
1:1 conduction |
First degree Heart Block
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Rate 60-100
Inverted P wave PRI < 0.12 sec |
Accelerated Junctional
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HR 20-40
Wide QRS No atrial activity |
Idioventricular
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Let's "EAT" at the Junction Cafe. What does this stand for and the rates?
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E- escape (40-60)
A- accelerated (60-100) T- tachycardia (>100) |
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Regular rhythm
HR < 60 Normal PRI and QRS |
SInus bradycardia
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Early beat with P wave, followed by no QRS
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non-conducted PAC
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Narrow QRS
P waves present HR 150-250 |
Atrial tachycardia
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3 or more PACs in a row
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PAT
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grossly irregular
unmeasureable p waves |
Atrial Fibrillation
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Regular
Ventricular rate 170-220 P waves not visible |
SVT
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HR 40-60
no p wave seen Narrow QRS |
junctional escape
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HR 100-180
Regular Inverted p wave |
Junctional tachycardia
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Early beat
Non-compensatory pause Inverted p wave PRI < 0.12 |
PJC
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QRS > 0.12
Right or left |
Bundle Branch Block (BBB)
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Wide QRS
No p waves Rate 140-250 |
V Tach
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P waves present
No QRS |
Ventricular Standstill
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EKG pacer spikes that fall where they should not "extra spikes"
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Failure to sense/ undersensing
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No pacer spikes because sensitivity fence is too high
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Oversensing
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Pacemaker
P waves present followed by no p waves |
Failure to pace
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Measured from J point to the onset of T wave; should be < 2mm
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ST segment
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Repolarization of Purkinje fibers not usually measured
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U wave
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First downward deflection
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Q wave
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