Treatment of hyperkalemia includes –
**Core Concept**
Hyperkalemia is a condition characterized by elevated potassium levels in the blood, which can lead to cardiac arrhythmias, muscle weakness, and even cardiac arrest. Treatment aims to reduce potassium levels and alleviate symptoms.
**Why the Correct Answer is Right**
The treatment of hyperkalemia involves several steps: shifting potassium into cells, reducing potassium release from cells, and removing potassium from the body. One of the key steps is to administer **calcium gluconate**, which helps stabilize cardiac membranes and counteract the cardiac effects of hyperkalemia. This is done by blocking the potassium channels on the cardiac cell membrane, thereby reducing the risk of arrhythmias.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because insulin and glucose only work by shifting potassium into cells through the sodium-potassium pump, but they do not address the overall reduction of potassium levels.
**Option B:** This option is incorrect because beta-2 agonists, such as albuterol, work by increasing cellular uptake of potassium but can also have adverse effects, including increased heart rate and cardiac arrhythmias.
**Option C:** This option is incorrect because sodium polystyrene sulfonate (SPS) works by exchanging sodium for potassium in the colon, but it is a slow process and may not be effective in acute hyperkalemia.
**Clinical Pearl / High-Yield Fact**
In the treatment of hyperkalemia, it is essential to remember that **calcium gluconate** is a rapid-acting treatment that should be administered immediately to stabilize cardiac membranes.
**Correct Answer:** C.