Practice EKG Rhythm Strips 227
Identify the following rhythms.
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Answers
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The rhythm is irregular with a rate of 40/min. The P waves are wide and show some splitting, a characteristic of left atrial enlargement. There is progressive lengthening of the PR interval. A nonconducted P wave follows the 2nd and 4th complexes. The QRS complex is narrow. PR: .20/.28/.36 sec. QRS: .08 sec, QT: .44 sec. Interpretation: 2nd degree heart block type I
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The rhythm is regular with a ventricular rate of 44/min. There are flutter waves which are seen better in the V1 lead. There are 3:1 flutter waves for every QRS complex. The atrial rate is 188/min. The QRS complex is wide. There is 5 mm ST elevation in lead II. PR: ---, QRS .12 sec. QT: .44 sec. Interpretation: Atrial flutter
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The rhythm is regular. The heart rate is 93/min. The P waves are upright and are associated with a QRS complex. The QRS complexes are narrow. There is 1mm ST depression with T wave inversion in lead II. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec. QT: .36 sec. Interpretation. Normal sinus rhythm.
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The rhythm is irregular and the rate is 100/min. The P waves are associated with a QRS complex and have a uniform morphology. There are unifocal PVCs every 5th beat. PR: .16 sec. QRS: .08 sec. QT: .36 sec. Interpretation: Normal sinus rhythm with unifocal PVCs
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The rhythm is irregular. The heart rate is 90/min. The P waves show some splitting but they are uniform and upright. The 2nd and 3rd complexes represent a multifocal couplet. The last complex has the same morphology as the first PVC so this suggests that they came from the same source. PR: .20 sec. QRS: .08 sec. QT: .44 sec. Interpretation: Normal sinus rhythm with a multifocal couplet
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2.
.jpg)
3.
4.
5.
Answers
1.
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| 2nd degree heart block type I |
The rhythm is irregular with a rate of 40/min. The P waves are wide and show some splitting, a characteristic of left atrial enlargement. There is progressive lengthening of the PR interval. A nonconducted P wave follows the 2nd and 4th complexes. The QRS complex is narrow. PR: .20/.28/.36 sec. QRS: .08 sec, QT: .44 sec. Interpretation: 2nd degree heart block type I
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| Atrial flutter |
The rhythm is regular with a ventricular rate of 44/min. There are flutter waves which are seen better in the V1 lead. There are 3:1 flutter waves for every QRS complex. The atrial rate is 188/min. The QRS complex is wide. There is 5 mm ST elevation in lead II. PR: ---, QRS .12 sec. QT: .44 sec. Interpretation: Atrial flutter
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| Normal sinus rhythm |
The rhythm is regular. The heart rate is 93/min. The P waves are upright and are associated with a QRS complex. The QRS complexes are narrow. There is 1mm ST depression with T wave inversion in lead II. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec. QT: .36 sec. Interpretation. Normal sinus rhythm.
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| Normal sinus rhythm with unifocal PVCs |
The rhythm is irregular and the rate is 100/min. The P waves are associated with a QRS complex and have a uniform morphology. There are unifocal PVCs every 5th beat. PR: .16 sec. QRS: .08 sec. QT: .36 sec. Interpretation: Normal sinus rhythm with unifocal PVCs
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| Normal sinus rhythm with a multifocal couplet |
The rhythm is irregular. The heart rate is 90/min. The P waves show some splitting but they are uniform and upright. The 2nd and 3rd complexes represent a multifocal couplet. The last complex has the same morphology as the first PVC so this suggests that they came from the same source. PR: .20 sec. QRS: .08 sec. QT: .44 sec. Interpretation: Normal sinus rhythm with a multifocal couplet
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