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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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1st degree AV Block
PR interval > 0.20; There is 1 P wave before each QRS complex indicating the impulse from SA node passes through to ventricles but is delayed in AV node or Bundle of His |
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2nd Degree AV Block
Type I Wenckebach or Type I Mobitz Seen as a prolongation of RR intervals until a QRS complex is completely missing, then sequence begins again |
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2nd degree AV Block a.k.a
Type I Wenckebach or Mobtiz Seen as prolongation of the PR intervals until a complete QRS interval is missing, cycle then begins again |
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3rd Degree Block
atria & ventricles are paced by independant sources. Recognized by the establishment of a nonexistant relationship between the P waves and QRS complexes |
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Atrial Fibrillation
atrium quivers w/no coordinated contraction; No true P waves and ventricular rate may be irregular & result in an abnormal RR interval |
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ECG Component Diagram
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Mobitz 2nd Degree AV Block
Seen as a series of nonconducted P waves followed by a P wave that is conducted to the ventricles |
Sometimes ratio of nonconducted to conducted P waves is fixed at 3:1 or 4:1
Result from MI or ischemia |
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Normal ECG
begins w/upright P wave; PR interval of 0.12-0.20 consistently; QRS identical and no longer then 0.12; ST segment is flat; RR interval regular doesn't vary more than 0.12 between QRS complexes. Heart rate between 60-100 |
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Normal Sinus Rhythm
60-100 bpm Identical P waves, PR interval of .12-.20 & consistent; QRS complex no longer than .12 seconds; ST segment is flat; R-R interval regular & don't vary more than .12 seconds between QRS complexes |
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Sinus Arrhythmia
recognized by irregular spacing between QRS complexes. RR interval varies by more than 0.12 seconds |
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