Practice EKG Rhythm Strips 169
Identify the following rhythms.
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2.
3.
4.
5.
Answers
1.
The rhythm is regular. The rate is 60. The P waves are absent. No ectopic beats are noted.
PR: ---, QRS: .12 sec, QT: .44 sec
2.
The rhythm is irregular due to the many PACs. The rate is 140/min. There are upright P waves present of differing morphology. Some P waves are buried with the T wave of the previous complexes. To be multifocal atrial tachycardia there needs to be at least three P waves of various morphology with a ventricular rate over 100/min. PR---, QRS: .08, QT: .32 sec
3.
The rhythm is irregular due to the pause. The rate is 60/min. The P waves are upright and are associated with a QRS complex. There is some ST depression and inversion of the T wave. No ectopic beats are present. There is a 1.268 second pause following the 3rd complex. PR: .14 sec, QRS: .08 sec. QT: .40 sec.
4.
The rhythm is irregular due to the unifocal PVCs. The rate is 90/min. There are upright P waves present. Two unifocal PVCs are seen. PR: .12 sec, QRS: .08 sec, QT: .26 sec.
5.
The rhythm is regular. The calculated rate is 48/min. The P waves are upright and uniform. No ectopic beats are noted. The T wave is inverted. PR: .18 sec, QRS: .16 sec, QT: .44 sec.
1.
2.
3.
4.
5.
Answers
1.
|
| Junctional rhythm |
The rhythm is regular. The rate is 60. The P waves are absent. No ectopic beats are noted.
PR: ---, QRS: .12 sec, QT: .44 sec
2.
|
| Multifocal atrial tachycardia |
The rhythm is irregular due to the many PACs. The rate is 140/min. There are upright P waves present of differing morphology. Some P waves are buried with the T wave of the previous complexes. To be multifocal atrial tachycardia there needs to be at least three P waves of various morphology with a ventricular rate over 100/min. PR---, QRS: .08, QT: .32 sec
3.
|
| Normal sinus rhythm with sinus pause |
The rhythm is irregular due to the pause. The rate is 60/min. The P waves are upright and are associated with a QRS complex. There is some ST depression and inversion of the T wave. No ectopic beats are present. There is a 1.268 second pause following the 3rd complex. PR: .14 sec, QRS: .08 sec. QT: .40 sec.
4.
|
| Normal sinus rhythm with unifocal PVCs |
The rhythm is irregular due to the unifocal PVCs. The rate is 90/min. There are upright P waves present. Two unifocal PVCs are seen. PR: .12 sec, QRS: .08 sec, QT: .26 sec.
5.
|
| Sinus bradycardia |
The rhythm is regular. The calculated rate is 48/min. The P waves are upright and uniform. No ectopic beats are noted. The T wave is inverted. PR: .18 sec, QRS: .16 sec, QT: .44 sec.
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