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Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. 1st degree block with multifocal couplet  The rhythm is irregular due to the PVCs.   The rate is  80/min.  The P waves precede the QRS complex but the PR interval is prolonged and measures .32 sec.   A multifocal couplet is present.  PR:  .32 sec,  QRS:  .08 sec,  QT:  .40 sec. 2. 3rd degree heart block The atrial rate is around 80/min while the ventricular rate is around  33.  The P waves are dissociated from the QRS complexes.  On the V1 lead it is easy to identify the P waves that fall within the QRS complex.  No ectopic beats are present.  PR:  ---,  QRS:  .16 sec,  QT:  .60 sec. 3. Blocked premature atrial beats The rhythm is irregular due to the pauses.   The rate is 50/min.  The P waves are upright and precede the QRS complex...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Atrial fibrillation with rapid ventricular response The rhythm is irregular.   The rate varies.  No P waves are clearly identified.  No ectopic beats are noted.  The paroxysmal pattern helps to identify the rhythm.  During the periods of slower conduction the fibrillatory waves are clearly seen.  PR:  ---,  QRS:  .08 sec, QT:  .28 sec 2. Junctional rhythm  The rhythm is regular with a rate of  51/min.  In the first three complexes there are no P waves but in the last three complexes some small retrograde P waves emerge.  No ectopic beats are present.  PR:  ---,  QRS:  . 08 sec,  QT:  .38 sec. 3. Sinus tachycardia with a PAC and a couplet The rhythm is irregular due to the various ectopic beats.   The rate is 130/min.  Upright P waves are ...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. 2nd degree heart block type I The rhythm is irregular with a rate of 60/min.   There are P waves present but the P wave after the 3rd complex is not conducted.  The PR interval increases over successive beats.  No ectopic beats are noted.  PR: ---,  QRS:  .08 sec,  QT:  .44 sec. 2. There is complete AV dissociation.   The atrial rhythm is regular with a rate of 60/min and the ventricular rhythm is also regular with a rate of 40/min.   The P waves are dissociated from the QRS complexes.  No ectopic beats are noted.  PR:  ---,  QRS:  .16 sec,  QT:  .44 sec.  If the patient is unstable, consider transcutaneous pacing or begins dopamine or an epinephrine drip as an alternative to pacing. 3. Complete heart block ...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Sinus tachycardia with T wave inversion in lead II The rhythm is regular and the rate is 107/min.   The P waves are upright and have a corresponding QRS complex.  There is ST depression in lead II and also a 2 mm ST elevation in the V1 lead. No ectopic beats are noted.  PR:  .16 sec,  QRS:  .08 sec,  QT:  .30 sec. 2. Normal sinus rhythm with some triplets of PVCs The rhythm is irregular due to the PVCs.   The rate is 100/min.  The P waves are associated with a QRS complex and are uniform and upright.   There are a pair of PVC triplets.   PR:  .16 sec,  QRS:  .08 sec, QT:  .34 sec. 3. This is a busy rhythm strip.   There was not enough room on it to note all the different complexes.  The second complex is a R on T PVC that falls on the later...

Identify the following rhythms. 1. a.   Normal sinus rhythm with multiple PJCs b.   Wandering atrial pacemaker c.   Sinus arrhythmia d.   Atrial fibrillation 2. a.   1st degree AV block b.   2nd degree AV block type I c.   Normal sinus rhythm d.   Sinus pauses 3. a.   Atrial flutter with slow ventricular response b.   Sinus bradycardia with sinus arrhythmia c.   2nd degree AV block type II d.   Complete heart block 4. a.   Ventricular paced with multifocal PVCs b.   Ventricular bigeminy c.   Normal sinus rhythm with a couplet of PVCs d.   Sinus bradycardia with unifocal PVCs 5. a.   Sinus bradycardia with a PAC b.   Sinus bradycardia with a PJC c.   Sinus bradycardia with a PVC d.   Sinus arrhythmia 6. a.    Sinus bradycardia with junctional escape beats b.    Sinus ...