Opsan Healthtech Private Limited

TPN – Total Parenteral Nutrition: Medical Description

Full Name: Total Parenteral Nutrition (TPN)
Also Known As: Intravenous nutrition, parenteral nutrition
Route of Administration: Intravenous (central line preferred, sometimes peripheral)

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What is TPN?

Total Parenteral Nutrition (TPN) is a method of feeding that bypasses the gastrointestinal (GI) tract. It delivers a complete set of nutrients directly into the bloodstream for patients who are unable to eat or absorb food normally.

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Contents of TPN:

TPN solutions are customized for each patient and typically include:

Carbohydrates: Usually as dextrose (main energy source)
Proteins: As amino acids
Fats (lipids): Intravenous lipid emulsions for essential fatty acids and calories
Electrolytes: Sodium, potassium, chloride, calcium, magnesium, phosphate
Vitamins and trace elements
Water: To maintain hydration

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Indications:

Severe malnutrition
Short bowel syndrome
Crohn’s disease with severe flares
Bowel obstruction
Severe pancreatitis
Post-surgical GI rest (e.g., after major bowel surgery)
Cancer patients unable to absorb nutrients

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Administration:

Central venous catheter (e.g., PICC line or tunneled catheter) is preferred for long-term TPN due to the high osmolarity of the solution.
Peripheral Parenteral Nutrition (PPN) may be used short-term with lower concentration formulas.

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Risks and Complications:

Infection (sepsis): due to central line use
Liver dysfunction or cholestasis
Electrolyte imbalances
Hyperglycemia or hypoglycemia
Refeeding syndrome (in malnourished patients)
Thrombosis (clots at catheter site)

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Monitoring:

Daily to weekly labs: electrolytes, liver function tests, glucose, triglycerides
Close clinical monitoring of weight, fluid status, and signs of infection

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