| The 12 lead ECG |
The grid on this page shows the small and
large squares that an ECG is commonly recorded on.
Note that a small square is 1mm by 1mm and a large square is 5mm by 5mm.
It is recommended that you proceed in the following order...
| Basic ECG guide |
| Guide to more rhythms |
| Guide to axis |
| A set of ECG quizzes with answers (for the really keen) |
| Heart block made easy (You tube) |
| Bundle Branch Block made easy (You tube) |
Here is a normal 12 lead ECG with THREE additional rhythm strips at the bottom.
