Which route of administration cannot be used for enteral nutrition?

Enteral nutrition is the process of delivering nutrients directly into the gastrointestinal tract, enabling patients who cannot consume food orally to receive essential nutrients. The option indicating that intravenous push cannot be used for enteral nutrition is indeed correct because intravenous administration delivers fluids and medication directly into the bloodstream, bypassing the digestive system entirely. This method is primarily used for parenteral nutrition, which is characterized by the provision of nutrients via an intravenous route, rather than through the gastrointestinal tract.

In contrast, oral administration, gastrostomy, and nasoenteric tube are all methods used to provide nutrients directly into the digestive system. Oral administration involves the patient swallowing nutrients, while gastrostomy and nasoenteric tubes are more specialized procedures where a feeding tube is placed directly into the stomach or intestines to facilitate nutrition for patients who cannot ingest food normally. Therefore, these three methods are integral to enteral nutrition, making intravenous push the only route that is not applicable in this context.