A 58 year old man on haemodialysis presents with profound weakness after a weekend fishing trip.
This man's serum potassium was 9.6 mmol/L.
The following changes may be seen in hyperkalaemia
- small or absent P waves
- atrial fibrillation
- wide QRS
- shortened or absent ST segment
- wide, tall and tented T waves
- ventricular fibrillation