Which of the following is a cardiac stabilisation treatment for hyperkalemia?

Calcium gluconate is a key treatment for cardiac stabilization in patients with hyperkalemia, which refers to an elevated level of potassium in the blood. Hyperkalemia can lead to dangerous cardiac effects, including arrhythmias and even cardiac arrest. Calcium gluconate helps to protect the heart by stabilizing the myocardial cell membrane, reducing the risk of these arrhythmias caused by high potassium levels.

When calcium is administered, it competes with potassium for binding sites on the cardiac myocyte membrane, thus counteracting the effects of hyperkalemia. This helps in stabilizing the cardiac rhythm and reducing the likelihood of life-threatening arrhythmias until further actions, such as lowering the potassium level through other means (like dialysis or insulin with glucose), can be taken.

While magnesium sulfate, amiodarone, and adrenaline have their own indications and roles in various cardiac conditions, they do not directly offer the same protective effects on the heart as calcium gluconate does when specifically addressing hyperkalemia-induced cardiac instability. This makes calcium gluconate the appropriate choice for this scenario.