Practice EKG Rhythm Strips 153
Identify the following rhythms.
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Answers
1.
Agonal rhythm is a slow idioventricular rhythm with a rate of less than 20. A terminal rhythm that often precedes asystole and death.
2.
The rhythm is irregular due to the ectopic beats. The rate is 60/min. The are some native P waves as well as some that are pacemaker generated. On the first complex the P wave is generated by the patient. The PR interval is prolonged and measures .26 sec. On the subsequent complexes a P wave is not sensed by the pacemaker so the atrial pacemaker generates an impulse within it's set parameters. The ventricle is completely paced. Two unifocal PVCs are present. PR: .24 sec, QRS: .16 sec, QT: .48 sec.
3.
The rhythm is irregular because of the pause. The rate is 60/min. The P waves are upright and precede the QRS complex but the PR interval is prolonged. A sinus pause occurs after the 5th complex. PR: .28 sec, QRS: .10 sec QT: .42 sec.
4.
The rhythm is regular. The rate is 57. One upright P wave for every QRS complex. No ectopic beats are present. PR: 16 sec. QRS: .08 sec, QT: .38 sec.
5.
The rate is irregular due to the PVC. The rate is 110/min. The P waves are positive, uniform, and precede each QRS complex. A single PVC occurs toward the end of the strip. PR: .12 sec, QRS: .08 sec, QT: .32 sec.
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2.
3.
4.
5.
Answers
1.
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| Agonal rhythm |
2.
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| Demand pacing with unifocal PVCs |
3.
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| Sinus pause |
The rhythm is irregular because of the pause. The rate is 60/min. The P waves are upright and precede the QRS complex but the PR interval is prolonged. A sinus pause occurs after the 5th complex. PR: .28 sec, QRS: .10 sec QT: .42 sec.
4.
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| Sinus bradycardia |
5.
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| Sinus tachycardia with a PVC |
The rate is irregular due to the PVC. The rate is 110/min. The P waves are positive, uniform, and precede each QRS complex. A single PVC occurs toward the end of the strip. PR: .12 sec, QRS: .08 sec, QT: .32 sec.
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