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Nutrition Interventions and Dietary Guidelines

Explains various nutritional interventions such as NPO orders, enteral feeding (NG, PEG, J tubes), and parenteral feeding (TPN). It also covers the Dietary Guidelines for Americans, emphasizing whole foods, protein variety, limiting harmful substances, and hydration.

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Nutrition is the body's intake and use of necessary nutrients to support tissue growth and energy production. When a patient's ability to consume food orally is compromised due to illness, surgery, or physiological dysfunction, healthcare providers must implement specific nutritional interventions. These interventions are categorized by the method of delivery, ranging from complete restriction of oral intake to specialized intravenous feeding.

NPO Orders and Oral Care

An NPO (Nothing By Mouth) order is a medical instruction that prohibits a patient from ingesting any food or liquids. This is a common requirement in several clinical scenarios, including:

  • Preparation for and recovery from surgery.
  • Management of a gastrointestinal (GI) bleed.
  • Treatment of an intestinal blockage.

Because patients on NPO orders cannot maintain oral hygiene through eating or drinking, nursing care must prioritize frequent mouth care to prevent dryness and maintain mucosal integrity.

Enteral Feeding: Intestinal Nutrition

When a patient has a functional gastrointestinal tract but cannot swallow, refuses to eat, or requires supplemental nutrients, enteral feeding is utilized. Enteral nutrition involves delivering nutrients directly into the stomach or small intestine via a tube.

Diagram illustrating nasogastric (NG) tube, gastrostomy (G-tube), and jejunostomy (J-tube) placements in the human digestive system.
Diagram illustrating nasogastric (NG) tube, gastrostomy (G-tube), and jejunostomy (J-tube) placements in the human digestive system.

There are three primary types of enteral tubes used in clinical practice:

NG Tube (Nasogastric)

The NG tube is inserted through one of the nares (nostrils) and terminates in the stomach. This method is typically reserved for short-term nutritional support.

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