Final answer:
The nurse would assess the appropriate dosage of penicillin G based on the lowest and highest recommendations, patient-specific factors, medication stability, antibiotic resistance concerns, and the MIC value. Adjustments would be made in accordance with the patient's condition and response to treatment.
Step-by-step explanation:
The nurse, after examining the Medication Administration Record (MAR) and the medication reference, could conclude several things based on the lowest and highest recommended dosages of penicillin G. First, it should be noted that the medication is a narrow-spectrum antibiotic used intravenously or intramuscularly, meaning its effective dosage needs to be carefully administered and monitored. The Minimum Inhibitory Concentration (MIC) is the lowest concentration of an antimicrobial that will inhibit the visible growth of a microorganism after overnight incubation. According to the MAR, penicillin G has an MIC of 0.06 µg/mL.
Lastly, due to the instability of penicillin G in an acidic environment, such as that found in the stomach, oral penicillins like amoxicillin are preferred for oral treatment. A nurse would verify the recommended dosage ranges and adjust according to the situation, considering factors from the patient's response to treatment and known information about the medication efficacy.