Practice EKG Rhythm Strips 185
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a heart rate of 58/min. There are P waves present with the first four complexes but the P wave is absent with the remaining complexes. The QRS complex is narrow with some down slopping of the ST segment. No ectopic beats are present. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
2.
The rhythm is regular with a rate of 71/min. The P waves are uniform, upright, and have a corresponding QRS complex. No ectopic beats are noted. The ST segment is down slopping with inversion of the T wave. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
3.
The rhythm is regular with a heart rate of 167/min. Uniform P waves precede each QRS complex. No ectopic beats are noted. PR: .10 sec, QRS: .08 sec, QT: .30 sec.
4.
The rhythm is regular with a ventricular rate of 167/min. No P waves are seen. The QRS complex is narrow. PR: ---, QRS: .06 sec, QT: .32 sec.
5.
The rhythm is irregular due to the many PVCs. The ventricular rate is 100/min. No P waves are evident. The ventricle is being paced. Unifocal PVCs are present every other beat. PR: ---, QRS: .16 sec, QT: .48 sec.
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2.
3.
4.
5.
Answers
1.
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| Normal sinus rhythm changing to a junctional rhythm |
The rhythm is regular with a heart rate of 58/min. There are P waves present with the first four complexes but the P wave is absent with the remaining complexes. The QRS complex is narrow with some down slopping of the ST segment. No ectopic beats are present. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
2.
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| Normal sinus rhythm |
The rhythm is regular with a rate of 71/min. The P waves are uniform, upright, and have a corresponding QRS complex. No ectopic beats are noted. The ST segment is down slopping with inversion of the T wave. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
3.
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| Sinus tachycardia |
The rhythm is regular with a heart rate of 167/min. Uniform P waves precede each QRS complex. No ectopic beats are noted. PR: .10 sec, QRS: .08 sec, QT: .30 sec.
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| Supraventricular tachycardia |
The rhythm is regular with a ventricular rate of 167/min. No P waves are seen. The QRS complex is narrow. PR: ---, QRS: .06 sec, QT: .32 sec.
5.
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| Ventricular paced with bigeminal PVCs |
The rhythm is irregular due to the many PVCs. The ventricular rate is 100/min. No P waves are evident. The ventricle is being paced. Unifocal PVCs are present every other beat. PR: ---, QRS: .16 sec, QT: .48 sec.
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