Tube Feeding – Definition, Types and Application
Tube feeding is a medical nutrition method in which nutrients are delivered directly into the gastrointestinal tract via a tube when normal oral intake is not possible.
Wissenswertes über "Tube Feeding"
Tube feeding is a medical nutrition method in which nutrients are delivered directly into the gastrointestinal tract via a tube when normal oral intake is not possible.
What is Tube Feeding?
Tube feeding, also known as enteral nutrition, is a form of artificial nutrition in which a specially formulated liquid nutrient solution is delivered through a thin flexible tube directly into the stomach, duodenum, or small intestine. It is used when a person is unable to consume adequate nutrition by mouth but the gastrointestinal tract remains functional.
Indications – When is Tube Feeding Used?
Tube feeding is recommended in a wide range of medical conditions, including:
- Swallowing disorders (dysphagia) following stroke or brain injury
- Tumors of the mouth, throat, or esophagus
- Severe malnutrition or undernutrition
- Reduced or absent consciousness
- Chronic inflammatory bowel diseases such as Crohn's disease
- Premature infants or newborns with feeding difficulties
- Neurological conditions such as ALS or multiple sclerosis
Types of Tube Feeding
By Access Route
- Nasogastric tube (NGT): Inserted through the nose into the stomach – most common short-term option.
- Nasojejunal tube: Extends into the small intestine (jejunum), suitable for delayed gastric emptying.
- PEG (Percutaneous Endoscopic Gastrostomy): Tube placed surgically through the abdominal wall directly into the stomach – used for long-term feeding.
- PEJ (Percutaneous Endoscopic Jejunostomy): Tube leads directly into the small intestine, e.g., in cases of stomach disease or dysfunction.
By Delivery Method
- Continuous feeding: The nutrient solution is administered at a steady rate over many hours, often overnight.
- Bolus feeding: Defined volumes are delivered at set intervals, simulating regular mealtimes.
Composition of Tube Feed Formulas
Commercially prepared tube feed formulas contain all essential macronutrients (carbohydrates, proteins, fats) as well as vitamins, minerals, and trace elements in appropriate amounts. Specialized formulas are available for specific conditions such as diabetes, renal disease, liver disease, and elevated energy requirements.
Monitoring and Care
Tube feeding requires regular medical and nursing supervision. Key aspects include:
- Verification of tube placement
- Care of the insertion site (for PEG/PEJ tubes)
- Monitoring of body weight and laboratory values (e.g., blood glucose, electrolytes, kidney function)
- Regular flushing of the tube to prevent blockages
Possible Complications
Like any medical intervention, tube feeding can be associated with side effects and complications:
- Gastrointestinal symptoms: Nausea, vomiting, diarrhea, or constipation
- Aspiration: Entry of feed formula into the airways
- Infections: Particularly at the PEG insertion site
- Tube blockage
- Refeeding syndrome: Dangerous electrolyte shifts when nutrition is reintroduced too rapidly in severely malnourished individuals
Ethical Considerations
The decision to initiate or withdraw tube feeding – particularly in seriously ill or dying patients – often involves complex ethical considerations. The wishes of the patient, as expressed in an advance directive or living will, play a central role. Healthcare professionals, nursing staff, and family members should make decisions collaboratively, always keeping the patient's best interests at the forefront.
References
- Deutsche Gesellschaft für Ernährungsmedizin (DGEM) – Guidelines on Enteral Nutrition, 2023. Available at: https://www.dgem.de
- Lochs H. et al. – ESPEN Guidelines on Enteral Nutrition. Clinical Nutrition, 2006; 25(2): 177–360.
- World Health Organization (WHO) – Nutrition Support in Adults: Oral Nutrition Support, Enteral Tube Feeding and Parenteral Nutrition. Available at: https://www.who.int
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Related search terms: Tube Feeding + Tube-Feeding + Tubefeeding