12-lead electrocardiogram 30-minutes later with worsening shock/haemodynamic instability:
DESCRIPTION:
- Ventricular rate 156 bpm
- Irregularly irregular rhythm with no discernible P waves
- Northwest QRS axis (238°)
- Prolonged QRS duration (118 ms)
- Several runs of broad complex tachycardia (150 bpm) with different morphology to remainder of ECG
INTERPRETATION:
- Atrial fibrillation with aberrant conduction
- Fast ventricular response
- Non-sustained ventricular tachycardia
