Final answer:
Intravenous 0.5% KCl is prepared for a hypokalemic patient, but not usually from an immediate supply cabinet. Dehydrated patients commonly receive isotonic solutions like normal saline or Lactated Ringer's intravenously.
Step-by-step explanation:
When a physician orders an intravenous (IV) delivery of 100 mL of 0.5% KCl for a patient suffering from hypokalemia, an aide would likely retrieve the specific concentration of KCl from a supply area or pharmacy, usually not from an immediate supply cabinet unless it is routinely stocked with such specific medication concentrations. The medical professional must ensure the correct dosage and concentration are administered.
For a dehydrated human patient requiring fluids intravenously, the standard solution given is typically an isotonic crystalloid solution, such as normal saline (0.9% NaCl) or Lactated Ringer's solution. These solutions are designed to match the electrolyte composition of the blood to safely restore fluid balance without causing shifts in electrolyte levels.