ECG of the Week - 28th May 2012 - Interpretation

This ECG is from a 62 yr old female.

Click to enlarge

Rate:

• ~140

Rhythm:

• Regular
• P waves absent

 Axis:

• Normal (+30 deg)

Intervals:

• PR - Nil p waves visible
• QRS - Normal (80ms)
• QT - 320ms (QTc Bazette ~ 480 ms)

Segments:

• Slight ST depression II, III, V3

Additional:

• rSr' Morphology V1

Interpretation:

• Narrow Complex Tachycardia differentials include:
• Atrial Flutter 2:1 Block
• Juctional tachycardia

• Rhythm strip analysis and response to vagal stimuli may help differentiate.

  

References / Further Reading

Life in the Fast Lane

• Atrial Flutter here
• Junctional Tachycardia here

Textbook

• Chan TC, Brady WJ, Harrigan RA, Ornato JP, Rosen P. ECG in Emergency Medicine and Acute Care. Elsevier Mosby 2005.