Why is caution needed when glucose monohydrate + potassium chloride infusion containing 10% glucose and 0.15% potassium chloride is given with ACE inhibitors?

Glucose monohydrate + potassium chloride infusion containing 10% glucose and 0.15% potassium chloride requires caution with concurrent or recent ACE inhibitor treatment because it increases the risk of severe, potentially fatal hyperkalaemia, particularly when other risk factors for hyperkalaemia are present.