Practice Quiz

PA Recertifying Exam PANRE Practice Exam

Category - PANRE Practice Test

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All of the following are ECG findings of premature atrial contractions, 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) occur when the heartbeat starts from the ventricles instead of the sinoatrial node. 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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