For a physician's order of 2ml of Haldol liquid every 8 hours, how much should be administered?

The correct amount to be administered, based on the physician's order of 2ml of Haldol liquid every 8 hours, is 2 mg.

To understand this clearly, it is essential to look at the specifics of the medication dosing. Haldol (haloperidol) is often available in different concentrations, and the dosage in mg per ml should be confirmed in the medication's documentation or the accompanying pharmacy label. For this type of question, one typically assumes that 1 ml of Haldol liquid is equivalent to a specific number of milligrams, which must be known beforehand.

Given that the order is for 2ml every 8 hours, if 2ml corresponds to 2mg of haloperidol, then you would administer the 2ml to meet the physician's order effectively. It’s critical for medication technicians to understand the relationship between the volume of liquid measured in ml and the amount of medication delivered in mg, since this directly impacts patient safety and therapeutic effectiveness.

In this context, only option B aligns with the understanding that the physician’s order is for 2ml, which is specifically equal to the correct mg dosage required, making it the appropriate choice.