Practice EKG Rhythm Strips 139
Identify the following rhythms.
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Answers
1.
The rhythm is irregular with a rate of 170/min. No P waves are seen but some fibrillatory activity is noted. No ectopy is present. PR: ---, QRS: .08 sec, QT; .28 sec.
2.
The rhythm is regular and the rate is 93/min. The P waves are upright and wide suggesting left atrial enlargement. No ectopic beats are present. PR: .14 sec, QRS: .12 sec, QT: .34 sec.
3.
The rhythm is irregular due to the PAC. The rate is 60/min. The P waves are upright and precede the QRS complexes. The 8th complex arrives early in the cardiac cycle. The P wave is buried within the T wave of the preceding complex thus changing the shape of the T wave. PR: .18 sec, QRS: .08 sec, QT: .44 sec.
4.
The rhythm is irregular because of the PVC. The rate is 90/min. The P waves are upright, uniform, and precede the QRS complexes. There is down slopping of the ST segment. A PVC follows the 9th complex. PR: .20 sec, QRS: .08 sec. QT: .32 sec.
5.
The rhythm is regular with a rate of 68/min. No P waves are seen. There appears to be fibrillatory activity between the QRS complexes. No ectopic beats are seen. The QRS complexes are preceded by a ventricular pacer spike. PR: ---, QRS: .16 sec, QT: .44 sec
1.
2.
3.
4.
5.
Answers
1.
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| Atrial fibrillation with rapid ventricular response |
The rhythm is irregular with a rate of 170/min. No P waves are seen but some fibrillatory activity is noted. No ectopy is present. PR: ---, QRS: .08 sec, QT; .28 sec.
2.
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| Normal sinus rhythm |
The rhythm is regular and the rate is 93/min. The P waves are upright and wide suggesting left atrial enlargement. No ectopic beats are present. PR: .14 sec, QRS: .12 sec, QT: .34 sec.
3.
|
| Normal sinus rhythm with a PAC |
The rhythm is irregular due to the PAC. The rate is 60/min. The P waves are upright and precede the QRS complexes. The 8th complex arrives early in the cardiac cycle. The P wave is buried within the T wave of the preceding complex thus changing the shape of the T wave. PR: .18 sec, QRS: .08 sec, QT: .44 sec.
4.
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| Normal sinus rhythm with a PVC |
The rhythm is irregular because of the PVC. The rate is 90/min. The P waves are upright, uniform, and precede the QRS complexes. There is down slopping of the ST segment. A PVC follows the 9th complex. PR: .20 sec, QRS: .08 sec. QT: .32 sec.
5.
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| Ventricular paced |
The rhythm is regular with a rate of 68/min. No P waves are seen. There appears to be fibrillatory activity between the QRS complexes. No ectopic beats are seen. The QRS complexes are preceded by a ventricular pacer spike. PR: ---, QRS: .16 sec, QT: .44 sec
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