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EKG Refresh and Practice. Normal Sinus Rhythm . Rate: 60 - 100 beats per minute r Rhythrn: Atrial - Regular. Ventricular - Regular o Pwaves:.
Typology: Exams
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Normal Sinus Rhythm (NSR)^
Regular 60 to 100
Positive; Rounded;Normal PR Interval; One P wave for each QRS complex
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Sinus Bradvcardia Regular^ Lessthan
Positive;Rounded;Normal PR Interval; One P wave for each QRS complex
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Sinua Tachycardia Regular^100 to 170
Positive;Rounded;NormalPR Interval;OneP wavefor each QRScomplex
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SinusBlockor SinusArrest
Regular with SuddenPause^
60 to 100
Positive; Rounded;Normal PR Interval; May seeone non- conducting P before pause
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Atrial Flutter Regular or Irregular
Atrial: 250-400: Ventricular usuallv60-
Positive; Peakedor "Sawtooth" Appearanceto Baseline;Unable to measurePR Interval
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Atrial Fibrillation Irregular
Atrial: No coordinated systole; Ventricular usuallv60-
None; Wavy deflectionsaffecting baselineas atria quiver Narrow
Junctional Rhvthm Regular 40 to 60 lnverted;May occurbefore/after ORScomplexor be^ hidden^
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Accelerated Junctional Regular 60 to 100 Inverted;May occurbefore/after QRScomplexor be^ hidden^
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Junctional Tachvcardia Regular Morethan 100 Inverted; May occur before/after QRS complex^ or be hidden^
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2" AV Block, Mobitz II
Usually Regular,May be Iregular
Atrial: Varies, Ventricular: UsuallyLess Than
Positive;Rounded;PR^ Interval for conductingbeatsis always WNL; More than I P wavefor eachQRSComplex
UsuallyNarrow
3' AV Block (CompleteHeart Block)
Atrial and Ventricular Regularbut not Corresponding
Atrial: 60 to 100, Ventricular: Usuallv20-
Positive; Rounded;Unable to MeasurePR Interval; P:QRS Ratio variable; P waves may be hidden in QRS or T waves
TypicallyWidened
Bundle Branch Block
Thatof Underlying Rhvthm
That of Underlying Rhrrthm
Positive; Rounded;Normal PR Interval; One P wave for each QRS Complex
BorderlineWide:0. 0.14sec;Usually Notched(QRR'S)
Idioventricular Rhythm GVR) Regular 20 to 40^ Absent^ Wide
AcceleratedIVR Regular 40 to 100 Absent^ Wide
Premature Ventricular Conntraction (PVC)
Thatof Underlying Rhythmwith Isolated Anomaly
Thatof Underlying Rhythm
That of Underlying Rhythm; No P Wave PreceedinePVC
Thatof Underlying Rhythm;PVC Wide andMay Have OppositeDeflection from Underlying Rhrrthm