Practice EKG Rhythm Strips 181
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a rate of 60/min. The P waves are upright, uniform and precede the QRS complexes. The PR interval is prolonged. No ectopic beats are noted. PR: .40 sec, QRS: .16 sec, QT: .48 sec.
2.
The rhythm is irregular. The heart rate is 50/min. The P wave are upright. Nonconducted P waves follow the 2nd and 4th complexes. There is progressive elongation of the PR interval over successive beats. PR: .16/.36 sec. PR: .12 sec, QT: .48 sec.
3.
The rhythm is regular with a ventricular rate of 42/min. The P waves are upright and uniform. Some nonconducted P waves follow each QRS complex. The PR interval is consistent on the conducted beats. No ectopic beats are seen. PR: .20 sec, QRS: .12 sec, QT: .44 sec.
4.
The rhythm is slightly irregular with a rate of 70/min. The P waves are negative and precede the QRS complexes. There is a PJC noted, the 5th complex. PR: .12 sec, QRS: .10 sec, QT: .40 sec.
5.
The rhythm is regular with a heart rate of 75/min. Flutter waves are seen between the QRS complexes. No ectopic beats are noted. PR: .20 sec, QRS: .08 sec, QT: .28 sec.
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2.
3.
4.
5.
Answers
1.
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| 1st degree block |
The rhythm is regular with a rate of 60/min. The P waves are upright, uniform and precede the QRS complexes. The PR interval is prolonged. No ectopic beats are noted. PR: .40 sec, QRS: .16 sec, QT: .48 sec.
2.
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| 2nd degree block type II |
The rhythm is irregular. The heart rate is 50/min. The P wave are upright. Nonconducted P waves follow the 2nd and 4th complexes. There is progressive elongation of the PR interval over successive beats. PR: .16/.36 sec. PR: .12 sec, QT: .48 sec.
3.
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| 2nd degree AV block type II |
The rhythm is regular with a ventricular rate of 42/min. The P waves are upright and uniform. Some nonconducted P waves follow each QRS complex. The PR interval is consistent on the conducted beats. No ectopic beats are seen. PR: .20 sec, QRS: .12 sec, QT: .44 sec.
4.
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| Accelerated junctional rhythm |
The rhythm is slightly irregular with a rate of 70/min. The P waves are negative and precede the QRS complexes. There is a PJC noted, the 5th complex. PR: .12 sec, QRS: .10 sec, QT: .40 sec.
5.
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| Atrial flutter |
The rhythm is regular with a heart rate of 75/min. Flutter waves are seen between the QRS complexes. No ectopic beats are noted. PR: .20 sec, QRS: .08 sec, QT: .28 sec.
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