An IV bolus is characterized by:

An IV bolus is characterized by the administration of a concentrated dose directly into the circulation. This method allows for rapid delivery of medication directly into the bloodstream, resulting in a quick therapeutic effect. The bolus is typically delivered over a short period, which means that the entire dose is pushed through the intravenous line all at once, enabling immediate action of the drug.

In contrast, a continuous infusion involves administering medication over a prolonged period, which does not align with the definition of a bolus. Similarly, using a syringe pump relates to the controlled administration of fluids or medications over time, which again is different from the concept of a bolus. Lastly, administering medication through an oral route is unrelated to intravenous administration and does not reflect the characteristics of an IV bolus.