Which of the following is cause of Hyperkalemia:
**Core Concept**
Hyperkalemia is a condition characterized by elevated serum potassium levels, which can lead to cardiac arrhythmias, muscle weakness, and even respiratory paralysis. It is essential to identify the underlying causes of hyperkalemia to provide appropriate treatment.
**Why the Correct Answer is Right**
The correct answer is related to the excessive release of potassium from cells, particularly from red blood cells. This can occur due to several mechanisms, including hemolysis, rhabdomyolysis, or the use of certain medications like succinylcholine. Succinylcholine triggers the release of potassium from muscle cells by depolarizing the muscle membrane, leading to an increase in serum potassium levels.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because renal failure is a cause of hyperkalemia, but it is not the most direct cause related to the release of potassium from cells. Renal failure leads to decreased potassium excretion, but it does not directly cause the release of potassium from cells.
* **Option B:** This option is incorrect because hypokalemia is a condition characterized by low serum potassium levels, not high serum potassium levels.
**Clinical Pearl / High-Yield Fact**
It is essential to note that the treatment of hyperkalemia involves shifting potassium back into cells, which can be achieved with the use of insulin, calcium gluconate, or beta-2 agonists like albuterol.
**Correct Answer: C. Succinylcholine. Excessive release of potassium from red blood cells and muscle cells.**