Practice EKG Rhythm Strips 160
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a calculated rate of 78/min. There are uniform, upright P waves before each QRS complex. No ectopy is noted. PR: .12, QRS, .08 sec, QT: .28 sec.
2.
The rhythm is irregular due to some PACs. The rate is 90/min. There are upright P waves before each QRS complex. The P waves are not uniform in shape. There are some atrial ectopic beats present: complexes 3, 5, and 11. The R-R interval on these beats is shorter than the surrounding sinus beats. In addition the P wave morphology and the PR intervals also differ. PR: .12 sec, QRS: .08 sec, QT: .32 sec.
3.
The rhythm is irregular due to the PVCs. The rate is 70/min. The P waves are upright and uniform on the sinus beats. There are two PVCs of slightly different morphology. The first P wave looks like a fusion beat but I think that it is preceded by the T wave of the previous complex and not a P wave. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
The rhythm is regular. The calculated rate is 113/min. There are upright P waves before each QRS complex. These P waves are buried within the latter portion of the preceding T wave. No ectopic beats are noted. PR: .12 sec, QRS: .16 sec, QT: .34 sec.
5.
The rhythm is irregular. The rate is 40/min. There are some upright P waves present on the 1st, 2nd, 3rd, and 6th complexes. The 4th complex is a PAC as it arrives early in the cardiac cycle. A small upright P wave is present that differs in morphology from the sinus P waves. It is followed by a pause and an junctional escape beat, 5th complex. The 6th complex appears sinus in origin and then you have PJC. The PJCs and the escape beat lack P waves. PR: .12 sec, QRS: .08 sec, QT: .52 sec.
1.
2.
3.
4.
5.
Answers
1.
|
| Normal sinus rhythm |
The rhythm is regular with a calculated rate of 78/min. There are uniform, upright P waves before each QRS complex. No ectopy is noted. PR: .12, QRS, .08 sec, QT: .28 sec.
2.
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| Normal sinus rhythm with PACs |
The rhythm is irregular due to some PACs. The rate is 90/min. There are upright P waves before each QRS complex. The P waves are not uniform in shape. There are some atrial ectopic beats present: complexes 3, 5, and 11. The R-R interval on these beats is shorter than the surrounding sinus beats. In addition the P wave morphology and the PR intervals also differ. PR: .12 sec, QRS: .08 sec, QT: .32 sec.
3.
|
| Normal sinus rhythm with PVCs |
The rhythm is irregular due to the PVCs. The rate is 70/min. The P waves are upright and uniform on the sinus beats. There are two PVCs of slightly different morphology. The first P wave looks like a fusion beat but I think that it is preceded by the T wave of the previous complex and not a P wave. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
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| Sinus tachycardia |
The rhythm is regular. The calculated rate is 113/min. There are upright P waves before each QRS complex. These P waves are buried within the latter portion of the preceding T wave. No ectopic beats are noted. PR: .12 sec, QRS: .16 sec, QT: .34 sec.
5.
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| Sinus bradycardia, sinus arrhythmia with PJCs and escape beats |
The rhythm is irregular. The rate is 40/min. There are some upright P waves present on the 1st, 2nd, 3rd, and 6th complexes. The 4th complex is a PAC as it arrives early in the cardiac cycle. A small upright P wave is present that differs in morphology from the sinus P waves. It is followed by a pause and an junctional escape beat, 5th complex. The 6th complex appears sinus in origin and then you have PJC. The PJCs and the escape beat lack P waves. PR: .12 sec, QRS: .08 sec, QT: .52 sec.
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