ECG Library

Welcome to the ECG Library at St. Emlyn’s. Please use the following links to see example ECGs on common problems in emergency medicine and critical care. We are indebted to Dr Michael Colquhoun, a retired doctor from the South West of England who collated and described a range of typical ECGs that cover the major pathologies that we see. He has very kindly agreed to allow us to publish these on the St Emlyn’s website in order to provide a learning library for current and future generations of clinicians. As some time has passed from the original edition we have changed some of the stories and investigations to reflect modern practice. We will add to his original collection as cases and time allow.

Dr Michael Colquhoun has now left clinical practice behind, and now runs his own website specialising in wildlife and bird photography. You can check his website here.

Section A. Ischaemic Heart Disease

  1. Recent Myocardial Infarction
  2. Recent Anterolateral Myocardial Infarction
  3. Old Inferior Infarction With Lateral ST/T Wave Changes
  4. Old Inferior Infarction
  5. Posterior/Inferior Myocardial Infarction
  6. Extensive Anterolateral Infarction
  7. Acute Inferior Infarction
  8. Extensive Anterolateral Infarction
  9. Anterior Infarction with Lateral Ischaemia
  10. Recent Anterior Infarction with old Inferior Infarction
  11. Recent Anterior Infarction
  12. Old Anteroseptal Infarction
  13. Posterior/Lateral Infarction
  14. Acute Anterolateral Ischaemia
  15. Pericarditis
  16. Subendocardial Infarction
  17. Infero-posterior infarction
  18. Right ventricular infarct
  19. Anterior infarction with proximal LAD lesion

Section B Disturbances of Cardiac Rhythm & Conduction

  1. Sinus Bradycardia
  2. Sinus Arrythmia
  3. Sino Atrial Block
  4. First Degree AV Block
  5. Second degree AV block Mobitz type 1, Wenkebach.
  6. Second degree 2:1 AV block
  7. Third degree block with narrow complex escape rhythm
  8. Third degree block with inferior myocardial infarction
  9. Third degree block with broad complex escape rhythm
  10. Complete heart block with Atrial Flutter
  11. Junctional Rhythm
  12. Junctional Rhythm with Right Bundle Branch Block
  13. Atrial Flutter
  14. Atrial Fibrillation 1
  15. Atrial Fibrillation 2
  16. Atrial Fibrilallation 3 – Paroxysmal Atrial Fibrillation
  17. Atrial Fibrillation 4
  18. Atrial Fibrillation with Fast Ventricular Rate
  19. Atrial Fibrillation with Left Bundle Branch Block
  20. Cardiac Asystole
  21. Ventricular Premature Beats
  22. Ventricular Ectopic Beats following Myocardial Infarction
  23. Right Bundle Branch Block (RBBB)
  24. Right Bundle Branch Block with Wenkebach Phenomenon in AMI
  25. Trifascicular Block
  26. Left Bundle Branch Block (LBBB)
  27. Wolf Parkinson White (WPW) Type B
  28. Wolf Parkinson White (WPW) Type A
  29. Wolf Parkinson White with Inferior Q waves
  30. AV Nodal Re-Entrant Tachycardia
  31. Atrioventricular Re-Entrant Tachycardia
  32. Atrial Tachycardia with 2:1 Block and Aberrant Conduction
  33. Junctional Tachycardia
  34. Supraventricular Tachycardia conducted with LBBB
  35. Supraventricular Tachycardia conducted with RBBB
  36. Atrial Fibrillation with RBBB and Left Anterior Hemiblock
  37. Ventricular Tachycardia
  38. Ventricular Tachycardia with AV dissociation
  39. Ventricular Fibrillation

Section C. The ECG in the diagnosis of Cardiac Chamber Hypertrophy.

  1. Left Ventricular Hypertrophy
  2. Right Ventricular Hypertrophy with Ventricular Septal Defect
  3. Left Ventricular Hypertrophy in Aortic Valve Disease 1
  4. Left Ventricular Hypertrophy and Old Myocardial Infarction
  5. Left Ventricular Hypertrophy in Aortic Valve Disease 2
  6. Right Ventricular Hypertrophy in Pulmonary Hypertension
  7. Right Ventricular due to Pulmonary Disease

A note on case presentations on St. Emlyn’s

Cite this article as: Simon Carley, "ECG Library," in St.Emlyn's, October 27, 2018,

Scroll to Top