Practice EKG Rhythm Strips 223
Identify the following rhythms.
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Answers.
1.
The rhythm is regular with a rate of 60/min. The P waves are negative and precede the QRS complexes. The QRS complexes are narrow. No ectopic beats are noted. PR: .20 sec. QRS: .08 sec, QT: .38 sec. Interpretation: Junctional rhythm
2.
The rhythm is very irregular. The heart rate is 100/min. P waves are not present instead there is some fibrillatory waves between the QRS complexes. There are multifocal PVCs present. The 2nd and 3rd complex form a multifocal couplet. The other PVCs are the 4th, 6th, and 9th complexes. PR: ---, QRS: .12 sec, QT: .40 sec. Interpretation: Atrial fibrillation with multifocal PVCs
3.
The rhythm is regular with a rate of 30/min. The P waves are upright and uniform but not all of them are associated with a QRS complex. The atrial rate is 100/min. The QRS complexes are wide which points toward an underlying ventricular escape rhythm. No ectopic beats are noted. PR: ---, QRS: .16 sec, QT: .40 sec. Interpretation: 3rd degree heart block
4.
The rhythm is irregular with a rate of 30/min. There are not any P waves. The QRS complexes are wide. No ectopic beats are seen. PR: ---, QRS: .16 sec, QT: .44 sec. Interpretation: Idioventricular rhythm
5.
The rhythm is irregular. The heart rate is 60/min. The P waves are upright, uniform, and correspond to a QRS complex. Multifocal PVCs are present. PR: .20 sec, QRS: .10 sec, QT: .44 sec. Interpretation: Normal sinus rhythm with multifocal PVCs
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2.
3.
4.
5.
Answers.
1.
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| Junctional rhythm |
The rhythm is regular with a rate of 60/min. The P waves are negative and precede the QRS complexes. The QRS complexes are narrow. No ectopic beats are noted. PR: .20 sec. QRS: .08 sec, QT: .38 sec. Interpretation: Junctional rhythm
2.
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| Atrial fibrillation with multifocal PVCs |
The rhythm is very irregular. The heart rate is 100/min. P waves are not present instead there is some fibrillatory waves between the QRS complexes. There are multifocal PVCs present. The 2nd and 3rd complex form a multifocal couplet. The other PVCs are the 4th, 6th, and 9th complexes. PR: ---, QRS: .12 sec, QT: .40 sec. Interpretation: Atrial fibrillation with multifocal PVCs
3.
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| 3rd degree heart block |
The rhythm is regular with a rate of 30/min. The P waves are upright and uniform but not all of them are associated with a QRS complex. The atrial rate is 100/min. The QRS complexes are wide which points toward an underlying ventricular escape rhythm. No ectopic beats are noted. PR: ---, QRS: .16 sec, QT: .40 sec. Interpretation: 3rd degree heart block
4.
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| Idioventricular rhythm |
The rhythm is irregular with a rate of 30/min. There are not any P waves. The QRS complexes are wide. No ectopic beats are seen. PR: ---, QRS: .16 sec, QT: .44 sec. Interpretation: Idioventricular rhythm
5.
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| Normal sinus rhythm with multifocal PVCs |
The rhythm is irregular. The heart rate is 60/min. The P waves are upright, uniform, and correspond to a QRS complex. Multifocal PVCs are present. PR: .20 sec, QRS: .10 sec, QT: .44 sec. Interpretation: Normal sinus rhythm with multifocal PVCs
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