Final answer:
The question is about correctly preparing a specific dose of penicillin G potassium for injection, which involves mathematical calculations to ensure accurate dosing for the patient.
Step-by-step explanation:
The subject of the question revolves around the dosing and preparation of a penicillin G potassium injection, which is a medication used for treating bacterial infections. The question asks how to appropriately dilute and administer a specific dose of penicillin G potassium based on the instructions provided. This task involves mathematical calculations to ensure that the correct concentration and dose are given to a patient. Since penicillin G cannot be taken orally due to its instability in an acidic environment like that of the stomach, it is necessary to administer it through intramuscular (IM) injection or intravenous (IV) infusion, depending on the medical situation.
For the student's question regarding the preparation of 250,000 units of penicillin G potassium IM q8h, a step-by-step approach would involve determining the volume of the 1 million unit vial needed to get the ordered dose, based on the dilution options provided. The student would need to calculate this using ratios and proportions or by using the provided diluent volumes to achieve the desired final concentration of the medication.