MedSchool: Ace Your OSCEsThe Medical Company
GET - On the App Store

Sinus Arrhythmia

February 15th, 2021


Sinus arrhythmia occurs physiologically due to changes in intrathoracic pressure and resultant variation in vagal tone through the respiratory cycle.
  • Look For

  • Irregular RR interval
  • Normal PR interval with P waves preceding each QRS complex
  • Normal axis - positive P waves in leads I and II
Next Page
Want more info like this?
  • Your electronic clinical medicine handbook
  • Guides to help pass your exams
  • Tools every medical student needs
  • Quick diagrams to have the answers, fast
  • Quizzes to test your knowledge
Sign Up Now

Snapshot: Initialising...