Final answer:
During the shock phase of a burn, potassium levels initially increase due to cell damage; this condition is known as hyperkalemia. Hyperkalemia can impair various bodily functions, including muscle and heart activity. As treatment progresses, potassium levels can decrease, leading to hypokalemia.
Step-by-step explanation:
During the shock phase of a burn, potassium levels can initially increase, a condition known as hyperkalemia. This happens because the damaged cells release intracellular potassium into the extracellular fluid (ECF). Hyperkalemia can impair the function of skeletal muscles, the nervous system, and the heart, leading to complications such as the inability of the heart to relax after a contraction, mental confusion, numbness, and weakened respiratory muscles. However, as the burn treatment progresses, especially with fluid resuscitation, hypokalemia (a decrease in potassium levels) may occur due to dilution or loss of potassium through damaged skin or impaired renal function.