Cardiology
,ECGs
,How to read an ECG: Basics
• Patient identifier
• Date and time taken
• Calibration speed
• Ask: have you got a previous one to compare it to?
• Rhythm: regular or irregular (count the squares between 3 QRS
complexes)
• Rate: 300/big squares between QRS if regular, no. of QRS complexe
in rhythm strip x6 if irregular
• Is it sinus? every QRS complex has a p wave before
, How to read an ECG: Axis
deviation
• How to work it out
• Lead 1 has biggest peak (i.e. biggest QRS) left axis deviation
• Lead 2 has biggest peak normal
• Leader 3 has biggest peak right axis deviation
• Left axis deviation
• Conduction issue
• Right axis deviation
• Right Ventricular Hypertrophy
,ECGs
,How to read an ECG: Basics
• Patient identifier
• Date and time taken
• Calibration speed
• Ask: have you got a previous one to compare it to?
• Rhythm: regular or irregular (count the squares between 3 QRS
complexes)
• Rate: 300/big squares between QRS if regular, no. of QRS complexe
in rhythm strip x6 if irregular
• Is it sinus? every QRS complex has a p wave before
, How to read an ECG: Axis
deviation
• How to work it out
• Lead 1 has biggest peak (i.e. biggest QRS) left axis deviation
• Lead 2 has biggest peak normal
• Leader 3 has biggest peak right axis deviation
• Left axis deviation
• Conduction issue
• Right axis deviation
• Right Ventricular Hypertrophy
