What is the primary action of Calcium Gluconate?

• A. Stimulates red blood cell production
• B. Antagonises the effect of hyperkalaemia on the heart
• C. Increases absorption of nutrients
• D. Promotes blood coagulation

Answer: (B)

Calcium Gluconate is primarily used as an antidote in cases of hyperkalaemia, which is an elevated level of potassium in the blood. Its main action is to antagonize the effects of high potassium on cardiac muscle, thereby stabilizing the myocardial cell membranes against the potentially life-threatening effects of hyperkalaemia. By providing calcium ions, which are crucial for muscle contractions and electrical stability in the heart, Calcium Gluconate helps to reduce the risk of cardiac arrhythmias that can occur due to excessive potassium levels.

The other options do not align with the primary use of Calcium Gluconate. For instance, it does not stimulate the production of red blood cells, nor does it directly enhance nutrient absorption or promote blood coagulation. Thus, the role of Calcium Gluconate in managing hyperkalaemia is well established, making it an essential medication in emergency scenarios involving high potassium levels.