Practice EKG Rhythm Strips 222

Identify the following rhythms.

1.














2.

3.

4.


5.















Answers

1.
2nd degree heart block type II













The rhythm is regular.  The ventricular rate is 30/min.   There are upright P waves present but not all of them are associated with a QRS complex.  A nonconducted P wave follows each QRS complex.  The QRS is wide. The T wave is inverted in lead II.  PR:  .36 sec,  QRS:  .12 sec,  QT: .52 sec.  Interpretation: 2nd degree heart block type II


2.
 NSR changing to a junctional escape rhythm.











The rhythm is irregular with a rate of 50/min.  There are upright P waves present with the first three complexes.  The PR interval begins to shorten about the 3rd complex and by the 4th complexes the P wave fuses with the QRS complex.  The QRS complex remains narrow.  No ectopic beats are noted.   PR:  .12 sec,  QRS:  .08 sec.  QT:  .44 sec.   Interpretation:  NSR changing to a junctional escape rhythm.

3.
Normal sinus rhythm with an inverted T wave












The rhythm is regular with a rate of 93.  There are small upright P waves present before each QRS complex.  In lead III there are deep Q waves present which may be indicative of an old MI or a new evolving MI.   The ST segment is down slopping and the T waves are inverted suggesting inferior ischemia, though you would want to see it in contiguous leads- II, III, or aVF.   PR:  .12 sec,  QRS:  .10 sec,  QT:  .38 sec.  Interpretation:  Normal sinus rhythm with an inverted T wave


4.
Supraventricular tachycardia













The rhythm is regular with a rate of 188/min.   There are no P waves seen.  The QRS complex is wide.  No ectopic beats are noted.  PR:  ---,  QRS:  .10 sec,  QT:  .20 sec.  Interpretation: Supraventricular tachycardia

5.
Ventricular tachycardia 








The rhythm is regular.  The rate is 150/min.  There are not any P waves seen.   The QRS is wide suggesting a ventricular origin for the rhythm.   No ectopic beats are noted.  PR:  ---,  QRS:  ..16 sec,  QT:  .36 sec.  Interpretation:  Ventricular tachycardia


Comments

Popular posts from this blog

EKG Rhythm Strip Quiz 52: Heart Blocks

EKG Rhythm Strip Quiz 1

EKG Quiz 100 strips