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 activity
(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, during
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, during
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
approaching 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.
1/5
, 8. First Degree AV Block, The PR Interval Is Constant And
Measures Greater Than 0.20 Second.
9. Second Degree AV Block Mobitz I (Wenckebach) Has
A Cyclical Prolonging PR Interval Until The QRS Is
Dropped. Then The Cycle Begins Again.
***Remember The Clue "Lengthen, Lengthen Drop
Wenckebach.
10. Second Degree (AV) Block Has A Constant PR Interval
With Blocked QRS Complexes
11. Second Degree (AV) Block Has A Constant PR
Interval With Blocked QRS Complex (2)
12. Third Degree (Complete) Heart Block, The P-P And R-
R Intervals Are Regular (Constant) But Firing At
Different Rates.
13. T Wave Inversion, Or Negatively Deflected T Wave
Indicates Ischemia And Is Usually Seen With ST
Segment Elevation.
14. T Wave Inversion With ST Elevation On A 12-Lead ECG
Is Considered Myocardial Injury, Acute Injury Pattern,
Or Acute
15. Physiologic Q Wave Is Normal And The Width
Measures Less Than 0.04 Second And The Depth
Measures Less Than One-Third Of The Height Of The
R Wave In That Lead.
16. Pathologic Q Wave Indicates Tissue Death
2/5
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 activity
(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, during
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, during
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
approaching 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.
1/5
, 8. First Degree AV Block, The PR Interval Is Constant And
Measures Greater Than 0.20 Second.
9. Second Degree AV Block Mobitz I (Wenckebach) Has
A Cyclical Prolonging PR Interval Until The QRS Is
Dropped. Then The Cycle Begins Again.
***Remember The Clue "Lengthen, Lengthen Drop
Wenckebach.
10. Second Degree (AV) Block Has A Constant PR Interval
With Blocked QRS Complexes
11. Second Degree (AV) Block Has A Constant PR
Interval With Blocked QRS Complex (2)
12. Third Degree (Complete) Heart Block, The P-P And R-
R Intervals Are Regular (Constant) But Firing At
Different Rates.
13. T Wave Inversion, Or Negatively Deflected T Wave
Indicates Ischemia And Is Usually Seen With ST
Segment Elevation.
14. T Wave Inversion With ST Elevation On A 12-Lead ECG
Is Considered Myocardial Injury, Acute Injury Pattern,
Or Acute
15. Physiologic Q Wave Is Normal And The Width
Measures Less Than 0.04 Second And The Depth
Measures Less Than One-Third Of The Height Of The
R Wave In That Lead.
16. Pathologic Q Wave Indicates Tissue Death
2/5
