When ordering Ticar at 500 mg, which of the following values indicates the correct volume to administer?

To determine the correct volume to administer when ordering Ticar (ticarcillin) at 500 mg, it is essential to consider the concentration of the medication. Ticarcillin is typically provided in a specific concentration per mL, and the conversion from milligrams to milliliters depends on this concentration.

Assuming a standard concentration, the calculation involves dividing the prescribed dose (500 mg) by the concentration of the drug to find the volume to administer. For instance, if Ticar is available as 375 mg per mL, the calculation would be:

500 mg ÷ 375 mg/mL = 1.33 mL.

Rounding this to one decimal place leads to 1.3 mL, which matches the provided answer. This method illustrates how medication concentrations dictate the calculation of volume for administration.

Therefore, the correct volume to administer in this scenario is rooted in the understanding of the drug's concentration and proper dosage calculations, ensuring that the patient receives the intended therapeutic effect without any dosage errors.