Lead II shows very low voltage similar to the isoelectric line (isolated low voltage).




         
ECG
1a (left) and 1b (right).
The compact ECGs above belong to a 13 years-old boy who had undergone a VSD closure operation 12 years ago.
ECG
1a shows first degree AV block with right bundle branch block.
The ECG
1a was recorded with the electrodes in correct position.
The ECG
1b was recorded after right arm-right leg lead reversal.
Lead II in ECG
1b shows almost isoelectric low voltage (isolated/localized low voltage).




ECG
1c. The same patient's normal ECG is seen above (wide copy of ECG 1a).

Click here for a more detailed ECG




ECG
1d. The same patient's ECG after right arm-right leg lead reversal is seen above (wide copy of ECG 1b).

Lead II in ECG
1b shows almost isoelectric low voltage (isolated/localized low voltage).

Click here for a more detailed ECG