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1. Atrial Flutter -has a "saw tooth or picket fence" atrial
pattern (no P waves, F-waves in stead that may be in
a ratio) between the QRS complexes.
2. Atrial Fibrillation-Has "chaotic" atrial electrical activ-
ity (no P waves, f-waves instead) with irregular R-R
intervals.
3. PJCs cause the rhythm to be irregular. The P wave is
inverted if it can be seen. It may occur before, during
or after the QRS. The P wave will not be seen due to
its low voltage.
4. Junctional Rhythm may have an inverted or absent P
wave. The P wave may occur before, during or after the
QRS complex. The rate for this rhythm is 40-60 bpm.
5. Accelerated Junctional Rhythm may have an inverted
or absent P wave. The P wave may occur before, dur-
ing or after the QRS complex. The rate for this rhythm
is 60-100 bpm.
6. Junctional Tachycardia Rhythm may have an inverted
or absent P wave. The P wave may occur before, dur-
ing or after the QRS complex. The rate for this rhythm
is 100-180 bpm
7. Supraventricular Tachycardia presents with a "nor-
mal-narrow" appearing QRS complex and a rate of
greater than 150 bpm. Remember for heart rates ap-
proaching 150 or higher, it will be very likely that the P
wave will be buried. Be prepared to increase the paper
speed for this rhythm.
8. First Degree AV Block, the PR interval is constant and
measures greater than 0.20 second.
9. Second Degree AV Blocok Mobitz I (Wenkebach) has
a cyclical prolonging PR interval until the QRS is
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