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| This is a recording from a 62 year old patient with a history of a previous myocardial infarction and a history of ventricular tachycardia. |

| Rate | 61/min |
| PR | 177 ms |
| QRSD | 116 ms |
| QT | 413 ms |
| QTc | 416 ms |
| QRS axis | 37 degrees. |
| This is a recording from the same 62 year old patient with a history of a previous myocardial infarction and a history of ventricular tachycardia. |

| QRSD | 138.5ms |
| RMs | 112 mv |
| RMS 40 | 13.3uv |
| LAS | 44 ms |
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