Practice EKG Rhythm Strips 203
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a heart rate of 71/min. The P waves are absent. No ectopic beats are noted. The QRS complex is narrow. PR: ---, QRS: .08 sec, QT: .40 sec.
2.
The rhythm is irregular with ventricular rate of 150/min. P waves are upright but are not uniform in appearance. There is also some variability in the PR interval. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .32 sec.
3.
The rhythm is regular with a rate of 71/min. There flutter waves seen between the QRS complexes. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: undetermined.
4.
The rhythm is regular with a heart rate of 68/min. The P waves are preceded by an atrial pacing stimulus. No ectopic beats are seen. PR: .20 sec, QRS: .10 sec, QT: .40 sec.
5.
The rhythm is irregular. The rate is 90/min. The P waves are uniform, positive, and paired with a QRS complex. There are unifocal PVCs every other beat. A compensatory pause follows each PVC. PR: .12 sec, QRS: .08 sec, QT: .28 sec.
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Answers
1.
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| Accelerated junctional rhythm |
The rhythm is regular with a heart rate of 71/min. The P waves are absent. No ectopic beats are noted. The QRS complex is narrow. PR: ---, QRS: .08 sec, QT: .40 sec.
2.
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| Multifocal atrial tachycardia |
The rhythm is irregular with ventricular rate of 150/min. P waves are upright but are not uniform in appearance. There is also some variability in the PR interval. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .32 sec.
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| Atrial flutter |
The rhythm is regular with a rate of 71/min. There flutter waves seen between the QRS complexes. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: undetermined.
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| Atrial paced |
The rhythm is regular with a heart rate of 68/min. The P waves are preceded by an atrial pacing stimulus. No ectopic beats are seen. PR: .20 sec, QRS: .10 sec, QT: .40 sec.
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| Normal sinus rhythm with ventricular bigeminy |
The rhythm is irregular. The rate is 90/min. The P waves are uniform, positive, and paired with a QRS complex. There are unifocal PVCs every other beat. A compensatory pause follows each PVC. PR: .12 sec, QRS: .08 sec, QT: .28 sec.
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