Certified Dietary Manager (CDM) Practice Exam

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What is parenteral nutrition?

Feeding directly through the gastrointestinal tract
Administration of essential nutrients into a vein
A therapeutic diet for managing diabetes
Supplying nutrients via a nasogastric tube

The correct answer is: Administration of essential nutrients into a vein

Parenteral nutrition refers specifically to the process of delivering essential nutrients directly into a person's bloodstream through an intravenous (IV) line. This method is utilized when an individual cannot absorb nutrients through the gastrointestinal tract due to various medical conditions, surgeries, or digestive disorders. By providing nutrition directly into the bloodstream, parenteral nutrition ensures that the body receives the necessary vitamins, minerals, proteins, and calories needed for proper functioning and recovery. The other options describe different methods of nutrition delivery or dietary practices. For instance, feeding through the gastrointestinal tract refers to enteral nutrition, which is the opposite of parenteral nutrition. A therapeutic diet for managing diabetes focuses on carbohydrate control and blood sugar management, while supplying nutrients via a nasogastric tube is also a form of enteral nutrition. Hence, the focus of parenteral nutrition on IV delivery of nutrients distinguishes it from these other nutritional strategies.