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Sinus bradycardia with exit block  

Various Sinus Arrests and Sinus Pauses 1. Sinus bradycardia with sinus arrest 2. Sinus bradycardia with a sinus pause 3. Sinus bradycardia with a sinus pause 4. Sinus bradycardia with a sinus pause 5. Sinus bradycardia with a sinus arrest 6. Sinus rhythm with a sinus arrest 7. Sinus rhythm with a sinus arrest 8. Sinus bradycardia with sinus pause 9. Sinus bradycardia with sinus arrest 10. Sinus bradycardia with sinus arrest 11. Sinus bradycardia, 1st degree block with sinus arrest 12. Normal sinus rhythm with sinus pauses 13. Normal sinus rhythm with sinus arrest 14.

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Atrial fibrillation The rhythm is irregular and the rate is 60/min.  There fibrillatory/flutter waves between the QRS complexes.  No P waves are noted.  There are three unifocal PVCs present in quick succession, a triplet.  PR:  ---,  QRS:  08 sec,  QT:  .40 sec 2. Normal sinus rhythm with bigeminal PVCs The rhythm is irregular and the rate is 90/min.   There are upright P waves and they have a 1:1 relationship with the QRS complexes.  There are unifocal PVCs every other beat, bigeminal pattern.  PR:  .12 sec,  QRS:  .12 sec,  QRS:  .40 sec. 3. Demand ventricular paced The rhythm is irregular and there is a transition from the patient's own rhythm to a ventricular paced rhythm.   The patient'...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. 1st degree block The rhythm is regular with a rate of 75/min.   There are upright P waves associated with each QRS complex, however, the PR interval is prolonged.  No ectopic beats are identified.  PR:  .28 sec,  QRS:  .10 sec,  QT:  .38 sec. 2. 2nd degree block type I The rhythm is irregular and the rate is 50/min.   There are upright P waves present but the P waves following the 1st and 3rd complexes are not conducted.   There is progressive prolongation of the PR interval.  No ectopy is present.   PR: ---,  QRS:  .10 sec,  QT:  .52 sec. 3. Sinus arrhythmia with a U wave The rhythm is irregular with a rate of 80/min.  There are upright P waves that precede the QRS complexes.  There are U waves that follow the T waves.   ...

Identify the following rhythm strips. 1. 2. 3. 4. 5. Answers 1. 1st degree AV block with a PVC The underlying rhythm is regular.   There rate is  62.   There are upright P waves before each QRS complex.   There is a single PVC.   PR:  30 sec,   QRS:  .08 sec,  QT:  .36 sec 2. 1st degree AV block with a PAC The underlying rhythm is regular.   There are upright P waves before each QRS complex.  Ther is a single PAC, 4th complex, that has it's P wave hidden in the preceding T wave.   Notice the change in the morphology of the T wave as compared to the other T waves in the strip.   PR:  .32 sec, QRS:  .12 sec,  QT:  .40 sec. 3. Atrial flutter The rhythm is regular.   The rate is 63.   There are 3:1 flutter waves present.   No ectopy is noted. PR:  ---   QRS: ...

Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Sinus tachycardia with a wandering baseline The rhythm appears regular.   There is wander baseline.  Probably respiratory chest wall movement.  The rate is 150/min.   The P waves are upright and precede each QRS complex.  No ectopic beats are noted.  PR:  .16 sec,  QRS:  .08 sec,  QT:  .28 sec. 2. Normal sinus rhythm with sinus arrest Except for the pause, the underlying rhythm is regular.   The rate is 70/min.  (7 R waves X 10).  There are uniform, upright P waves before each QRS complex.  There is a 1.6 sec pause that begins the strip.  No ectopic beats are noted.  PR:  .20 sec,  QRS:  .12 sec,  QT:  .40 sec. 3. Normal sinus rhythm with muscle tremor artifact The rhythm is regular with a rate of 83/min.  The...