What is the formula to calculate the dose of Cisplatin for a patient with an area of 1.862 m²?

To determine the correct formula for calculating the dose of Cisplatin based on the patient's body surface area (BSA), it is essential to understand how drug dosages are often adjusted in clinical settings. Cisplatin dosages are typically expressed in grams per square meter (g/m²) of BSA, which allows for more accurate dosing that correlates with individual patient characteristics.

The appropriate formula involves multiplying the dosage per square meter by the patient's body surface area. In this case, for a dosage of 0.0020 g/m², you multiply this dosage by the patient's BSA of 1.862 m². This calculation accurately accounts for the total drug amount needed for the patient based on their body size.

The other options present variations that either misapply the dosage per area (for example, multiplying it without the correct units or using incorrect numerical values) or incorrectly represent the relationship between the dosage and the measured area. Thus, the first choice correctly applies the drug dosage per area formula to derive the required dose for the patient.