Parenteral Nutrition (TPN) Flashcards
What does peripheral parenteral nutrition (PPN) mean?
It refers to the administration of large-volume dilutet solutions of nutrients into a vein the arm or back of the hand.
Why is PPN (peripheral parenteral nutrition) unacceptable for a fluid restricted patient?
PPN requires large volumes to meet nutritional needs. The high osmolality of PPN may cause small veins to collapse, and peripheral access is difficult to maintain for more than a few days.
When is parenteral nutrition used?
When the patient is unable to meet nutritional needs either by an oral diet or through the use of enteral nutrition.
The clinical conditions that may require parenteral nutrition include an inability to digest and absorb nutrients, such as massive bowel resection or short bowel syndrome; intractable vomitting, as in hyperemesis gravidarum; GI tract obstruction, impaired GI motility; and abdominal trauma, injury, or injection.
Which adminstration method is used for higher protein peripheral or central?
Low protein concentration (3.5%-5.5%)= peripheral
High protein concentration (8.5%, 10%, 11%, 15%, 20%)= central
What is the kcal content of carbohydrates when using TPN (parenteral nutrition)?
3.4 kcal/g
How many kcals per ml is 10% lipids?
1.1 kcal per mil
If you give 500 ml of this fat it would be 550 kcals
What is cholestasis?
Often happens to pts whose GI tract are at complete rest. Its a condition in which bile accumulates in the gallbladder because it contracts infrequently wthout enteral stimulation.
Side note: Increased permeability to bacteria results when the GI tract is not in use. That is why some pts who require PN may receive trophic or trickle amounts of enteral nutrition.
How many kcals per ml is 20% lipids?
(Liposyn or Intralipid)
20% lipids is 2 kcals per ml
If you give 500 ml of 20% liposyn it would be 1000 kcals
