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These are two 12 lead electrocardiograms from the same person taken one after another. The leads have been displaced from the conventional positions on the top recording This is an uncommon lead reversal where the right arm and left leg have been reversed. This is one of the switches that distorts the limb leads the most. Notice the precordial leads are unaffected. |
Rate (/min) | 71 | QT (ms) | 375 |
| pr (ms) | 172 | QRS axis (degrees) | ||
| QRS (ms) | 76 |
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