Practice EKG Rhythm Strips 221

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.   The P waves are uniform and upright.   There is some splitting of the P wave which is often seen with biatrial enlargement.   There is progressive elongation of the PR interval over successive beats.   There is a dropped P wave after the 2nd QRS complex.   The QRS complexes are narrow.   PR:  .20/.24/..26/.30 sec.   QRS:  .08 sec,  QT:  .44 sec.   Interpretation:  2nd degree heart block type I

2.
Accelerated junctional changing to sinus rhythm











The rhythm is slightly irregular.   The heart rate is 83/min.   The P waves are negative or possibly biphasic in complexes 1 through 5 and then are positive in the remaining complexes.   The QRS complexes are narrow.  PR:  .10 sec,  QRS:  .08 sec,  QT:  . 36 sec.   Interpretation:   Accelerated junctional changing to sinus rhythm or NSR with a competing atrial ectopic focus.

3.
 Atrial flutter with variable ventricular conduction













The rhythm is irregular with a rate of 50/min.   There are flutter waves seen between the QRS complexes.  There is variable conduction to the ventricle with a ratio of 4:1 and 7:1  No ectopic beats are seen.  PR:  ---,  QRS:  .10 sec,  QT:  .28 sec.  Interpretation:  Atrial flutter with variable ventricular response.

4.
Normal sinus rhythm












The rhythm is regular with a rate of 71/min.   The P waves are upright and associated with a QRS complex.   The wide P waves are often indicative of left atrial enlargement.   No ectopic beats are seen.   PR:  .20 sec,  QRS:  .10 sec,  QT:  .44 sec.  Interpretation:  Normal sinus rhythm

5.
Ventricular fibrillation








The rhythm is irregular. No P waves are seen.  The QRS complexes are not well organized. Interpretation:  Ventricular fibrillation

Comments

Popular posts from this blog

EKG Rhythm Strip Quiz 52: Heart Blocks

EKG Rhythm Strip Quiz 1

EKG Quiz 100 strips