Practice ECG Rhythm Strips 106

Identify the following rhythms.

1.


2.


3.


4.








5.








Answers

1.
AV paced








The rhythm is regular with a rate of 75/min.  There a pacer spikes before the P waves and the QRS complexes.  No ectopic beats are noted.  PR:  .16 sec,  QRS:  .16 sec,  QT:  .44 sec.


2.
Atrial fibrillation












The rhythm is irregular and the rate is 84/min   No P waves are present but there are fibrillatory waves between the QRS complexes.  No ectopy is present.  PR:  ---,  QRS:  .16 sec,  QT:  .36 sec.


3.
NSR with PACs












The rhythm is irregular due to the atrial ectopic beast.   The rate is 66/min.  P waves are upright and precede a QRS complex.   PACs are present,  3rd and 9th complexes.   PR:  .12 sec,  QRS:  .08 sec,  QT:  .40 sec.


4.
Sinus tachycardia








The rhythm is regular with a ventricular rate of 120/min.  Upright P waves precede the QRS complexes.   The P waves have merged with the T wave of the preceding complex.   No ectopic beats are present.  PR:  .16 sec,  QRS:  .06,  QT:  .32 sec.


5.
NSR with 1st degree block and ventricular escape beats




The rhythm is irregular with a rate of 102/min.  There are P waves but they are buried within the T wave of the preceding complexes.  The PR interval is prolonged.  After complexes 8 and 12 there is a pause followed by ventricular escape beats.  PR:  .28 sec,  QRS:  .08 sec,  QT:  .36 sec.

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