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PANCE Practice Test

Category - PA

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Regarding the EKG findings of premature atrial contractions, all of the following are present EXCEPT:
  1. P waves may be present
  2. The QRS is usually narrow
  3. Extra P waves may be hidden within the QRS complex or T waves
  4. P waves are invariably absent
Explanation
Answer: D - Premature Atrial Contractions (PACs) are a type of premature, irregular heartbeat, or benign arrhythmia which starts in the upper two chambers of the heart called the atria. A PAC usually will also show up on the EKG and be characterized by an odd, misshapen P wave, normal or narrow QRS complex and extra P waves that may be hidden within QRS complex.
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