Practice EKG Rhythm Strips 220
Identify the following rhythms.
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The rhythm is irregular with a rate of 70/min. The P waves are upright, uniform, and precede the QRS complexes. The P waves are split which suggests biatrial enlargement. The PR interval is prolonged. The QRS is narrow. No ectopic beats are noted. PR: .24 sec, QRS: .08 sec, QT: .44 sec. Interpretation: Sinus arrhythmia with 1st degree block
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The rate is 20/min. There are no P waves. The QRS complex is wide which is indicative of a ventricular escape rhythm. PR: ---, QRS: .18 sec, QT: .50 sec. Interpretation: Idioventricular rhythm
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The rhythm is irregular with a heart rate of 100/min. No P waves are seen, just fibrillation between the QRS complexes. Multifocal PVCs are seen, the 5th, 9th, and 10th complexes. The 9th and 10th complexes form a multifocal couplet. PR: ---, QRS: .08 sec, QT: .24 sec. (the rhythm is so irregular it is difficult to measure the QT accurately). Interpretation: Atrial fibrillation with multifocal PVCs
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The rhythm is regular with a rate of 53/min. No P waves are seen. The QRS complex is narrow so this suggests a junctional escape rhythm. PR: ---, QRS: .10 sec, QT: .44 sec. Interpretation: Junctional rhythm
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The rhythm is irregular. The rate is 90/min. The P waves are upright and associated with a QRS complex. The QRS pattern in V1 suggests an incomplete RBBB. A single PAC is seen, the 4th complex. PR: . 16 sec, QRS: .10 sec, QT: .32 sec. Interpretation: Normal sinus rhythm with a PAC
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| Sinus arrhythmia with 1st degree block |
The rhythm is irregular with a rate of 70/min. The P waves are upright, uniform, and precede the QRS complexes. The P waves are split which suggests biatrial enlargement. The PR interval is prolonged. The QRS is narrow. No ectopic beats are noted. PR: .24 sec, QRS: .08 sec, QT: .44 sec. Interpretation: Sinus arrhythmia with 1st degree block
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| Idioventricular rhythm |
The rate is 20/min. There are no P waves. The QRS complex is wide which is indicative of a ventricular escape rhythm. PR: ---, QRS: .18 sec, QT: .50 sec. Interpretation: Idioventricular rhythm
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| Atrial fibrillation with multifocal PVCs |
The rhythm is irregular with a heart rate of 100/min. No P waves are seen, just fibrillation between the QRS complexes. Multifocal PVCs are seen, the 5th, 9th, and 10th complexes. The 9th and 10th complexes form a multifocal couplet. PR: ---, QRS: .08 sec, QT: .24 sec. (the rhythm is so irregular it is difficult to measure the QT accurately). Interpretation: Atrial fibrillation with multifocal PVCs
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| Junctional rhythm |
The rhythm is regular with a rate of 53/min. No P waves are seen. The QRS complex is narrow so this suggests a junctional escape rhythm. PR: ---, QRS: .10 sec, QT: .44 sec. Interpretation: Junctional rhythm
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| Normal sinus rhythm with a PAC |
The rhythm is irregular. The rate is 90/min. The P waves are upright and associated with a QRS complex. The QRS pattern in V1 suggests an incomplete RBBB. A single PAC is seen, the 4th complex. PR: . 16 sec, QRS: .10 sec, QT: .32 sec. Interpretation: Normal sinus rhythm with a PAC
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