Practice EKG Rhythm Strips 115
Identify the following rhythms.
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Answers
1.
The rhythm appears regular. There is wander baseline. Probably respiratory chest wall movement. The rate is 150/min. The P waves are upright and precede each QRS complex. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .28 sec.
2.
Except for the pause, the underlying rhythm is regular. The rate is 70/min. (7 R waves X 10). There are uniform, upright P waves before each QRS complex. There is a 1.6 sec pause that begins the strip. No ectopic beats are noted. PR: .20 sec, QRS: .12 sec, QT: .40 sec.
3.
The rhythm is regular with a rate of 83/min. The P waves are upright and are associated with a QRS complex. No ectopic beats are noted. There is muscle tremor artifact present. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
The rhythm is irregular due to the ectopic beats. The rate is 100/min. The P waves are upright and precede the QRS complex. The P waves are tall and wide suggesting biatrial enlargement. There are unifocal PVCs occurring every other beat. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
5.
The rhythm is slightly irregular with a rate of 78/min. No P waves are seen, only flutter waves in a 3:1 pattern. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: .24 sec.
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2.
3.
4.
5.
Answers
1.
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| Sinus tachycardia with a wandering baseline |
The rhythm appears regular. There is wander baseline. Probably respiratory chest wall movement. The rate is 150/min. The P waves are upright and precede each QRS complex. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .28 sec.
2.
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| Normal sinus rhythm with sinus arrest |
Except for the pause, the underlying rhythm is regular. The rate is 70/min. (7 R waves X 10). There are uniform, upright P waves before each QRS complex. There is a 1.6 sec pause that begins the strip. No ectopic beats are noted. PR: .20 sec, QRS: .12 sec, QT: .40 sec.
3.
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| Normal sinus rhythm with muscle tremor artifact |
The rhythm is regular with a rate of 83/min. The P waves are upright and are associated with a QRS complex. No ectopic beats are noted. There is muscle tremor artifact present. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
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| Normal sinus rhythm with ventricular bigeminy |
The rhythm is irregular due to the ectopic beats. The rate is 100/min. The P waves are upright and precede the QRS complex. The P waves are tall and wide suggesting biatrial enlargement. There are unifocal PVCs occurring every other beat. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
5.
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| Atrial flutter |
The rhythm is slightly irregular with a rate of 78/min. No P waves are seen, only flutter waves in a 3:1 pattern. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: .24 sec.
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