Each recording presents two leads recorded simultaneously.
| Sex: Female | Age: 72 years | History: heart failure | Medications: digoxin, quinidine |
ECG 1. The initial beats are supraventricular beats during sinus rhythm. A brief run of polymorphic ventricular tachycardia (VT) occurs after the 4th beat. The VT terminates spontaneously after a few beats, and reoccurs again.
ECG 2. Ventricular flutter.
ECG 3. Ventricular flutter.
ECG 4. Ventricular flutter.
ECG 5. Ventricular flutter progressing to ventricular fibrillation.
ECG 6. Ventricular flutter progressing to ventricular fibrillation.
ECG 7. Ventricular fibrillation.
ECG 8. Ventricular fibrillation.
