| The rhythm is atrial flutter with flutter waves seen best in the inferior leads and in leads V1 to V3. The atrial rate is about 250/min. The QRS is wide (>120ms) an there is a tall R' wave in V1 and a shallow S in V6. The axis of the QRS seems normal. The EKG shows a right bundle branch block. | Rate (/min) | 54 | QT (ms) | 559 |
| pr (ms) | 357 | QRS axis (degrees) | 80 | |
| QRS (ms) | 183 |
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