The ECG shows:
• Atrial fibrillation with a ventricular rate of
• Normal axis
• Normal QRS complexes
• Prominent U wave in lead V2
• Downward-sloping ST segments, best seen in leads V5—V6
The downward-sloping ST segments (the ’reverse tick’) indicate that digoxin has been given. The ventricular rate seems well-controlled. The prominent U waves in lead V2 could indicate hypokalemia.