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Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Atrial fibrillation with a PVC The rhythm is irregular with a rate of 60/min.   No P waves are present.   Fibrillation and flutter waves are present between the QRS complexes.  The 5th complex is a PVC.  There is some ST depression in  lead II.  PR:  ---,  QRS:  .08 sec,  QT:  .36 sec.   Interpretation:  Atrial fibrillation with a PVC 2. The rhythm is regular.   The heart rate is 48/min.  No P waves are seen.  The QRS complex is wide suggesting a ventricular origin for this rhythm.  No ectopic beats are noted.  PR:  ---,  QRS:  .12 sec,  QT:  .36 sec.  Interpretation:  Accelerated idioventricular rhythm. 3. NSR with a PVC triplet The rhythm is irregular due to the PVCs.   The rate is 90/min.  There are uprig...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1.  Accelerated junctional rhythm.   The rhythm is regular with a rate of 94/min.   No P waves are seen.   No ectopic beats are seen. The QRS complex is wide.   PR:  ---,  QRS:  .12 sec,  QT:  .40 sec.  Interpretation:  Accelerated idioventricular rhythm.   The interpretation of accelerated idioventricular rhythm is correct based upon the characteristic of the rhythm.  However, this patient actually had an underlying wide QRS complex on previous strips so the actual interpretation for this strip would be an accelerated junctional rhythm. 2. Asystole with a functional pacemaker  There are no P waves are QRS complexes.   There are pacer spikes present but they are not capturing.   Interpretation:  Asystole with a functional pacemaker 3. Dual paced with biventricula...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Normal sinus rhythm with bigeminal PVCs The rhythm is irregular due to the PVCs.   The rate is 60/min.   P waves are present, upright, and associated with a QRS complex.  There are unifocal PVCs occurring every other beat.  The PVCs are followed by a compensatory pause. A fusion beat, the last complex, is formed as a PVC occurs as a sinus impulse is initiated.  PR:  .16 sec.  QRS:  .10 sec.  QT:  .44 sec. 2. Trigeminal fusion complexes The rhythm is irregular due to the PVCs.   The rate is 80/min.   The P waves are upright and precede the QRS complexes.  The PR interval is prolonged.  There are unifocal PVCs that occur every third beat.  These PVCs are preceded by a P wave.  The P-P interval is very consistent across the str...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Bigeminy The rhythm is irregular due to the unifocal PVCs.   The rate is 90.  There are small upright P waves present.  There are PVCs occurring every 2nd beat.   PR:  .14 sec,  QRS:  .16 sec, QT:  .40 sec. 2. Biventricular paced with a multifocal couplet The rhythm is irregular due to the couplet.   The rate is 80/min.  The are flutter waves between the QRS complexes.  A multifocal couplet is present.  There are biventricular pacer spikes before the QRS complexes.  PR: ---,  QRS:  .12 sec,  QT:  .32 sec 3. Trigeminy The rhythm is irregular due to the unifocal PVCs.   The rate is 80/min.   The are small upright P waves present.  The PR interval is progressively lengthening.  Unifocal PVCs are present every 3r...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Atrial paced This paced rhythm is regular with a rate of 60/min.  There are upright P waves before each QRS complexes.   Each P wave is preceded by a pacer spike.   No ectopic beats are noted.  PR:  .20 sec,  QRS:  .08 sec, QT .48 seconds. 2. Normal sinus rhythm with ST elevation in lead II The rhythm is regular and the rate is 88/min.  The P waves are associated with the QRS complexes and are uniform and upright.   No ectopic beats are seen. In lead II there is 2mm ST elevation with some inversion of the T wave.  PR:  .16 sec,  QRS:  .08 sec,  QT:  .40 sec. 3. Normal sinus rhythm with a PAC This rhythm is irregular due to the PAC.   The rate is 80/min.   The P waves are upright and precede the QRS complex.  The 3rd complex is a PAC...