Final answer:
Parenteral contrast administration typically refers to intravenous administration, chosen when higher plasma levels are required or oral absorption is insufficient. Oral administration is preferred for home administration due to its convenience, with parenteral routes as alternatives when necessary.
Step-by-step explanation:
Parenteral contrast administration refers to the method of administering contrast material into the body that does not involve the digestive tract. The correct answer to the referred question is C. Intravenous administration, which is the process of delivering substances directly into a vein. This method is preferred when a drug is not easily absorbed in the gastrointestinal (GI) tract or achieves higher plasma levels through this mode of administration.
When considering appropriate and convenient routes for the administration of an antimicrobial to treat a systemic infection at home, the best answer would be A. Oral administration. This is because oral medications are generally preferred for their convenience; however, if the medication is not well absorbed or the patient is unable to take oral medications due to illness, parenteral routes such as intravenous or intramuscular injections may be employed.
Drugs used for general anesthesia may be administered as inhalational anesthetics or as injections such as intravenous or intramuscular anesthetics. These different modes of administration are chosen based on the properties of the drug and the clinical scenario at hand.